diff --git a/internal/toml-test/tests/invalid/encoding/bad-codepoint.toml b/internal/toml-test/tests/invalid/encoding/bad-codepoint.toml
new file mode 100644
index 00000000..b5b819a2
--- /dev/null
+++ b/internal/toml-test/tests/invalid/encoding/bad-codepoint.toml
@@ -0,0 +1 @@
+# Invalid codepoint U+D800 : ���
diff --git a/internal/toml-test/tests/invalid/float/inf-capital.toml b/internal/toml-test/tests/invalid/float/inf-capital.toml
new file mode 100644
index 00000000..2c0cb4ef
--- /dev/null
+++ b/internal/toml-test/tests/invalid/float/inf-capital.toml
@@ -0,0 +1 @@
+v = Inf
diff --git a/internal/toml-test/tests/invalid/float/nan-capital.toml b/internal/toml-test/tests/invalid/float/nan-capital.toml
new file mode 100644
index 00000000..f6f926e9
--- /dev/null
+++ b/internal/toml-test/tests/invalid/float/nan-capital.toml
@@ -0,0 +1 @@
+v = NaN
diff --git a/internal/toml-test/tests/invalid/inline-table/bad-key-syntax.toml b/internal/toml-test/tests/invalid/inline-table/bad-key-syntax.toml
new file mode 100644
index 00000000..bf71827c
--- /dev/null
+++ b/internal/toml-test/tests/invalid/inline-table/bad-key-syntax.toml
@@ -0,0 +1 @@
+tbl = { a = 1, [b] }
diff --git a/internal/toml-test/tests/invalid/inline-table/dotted-key-conflict.toml b/internal/toml-test/tests/invalid/inline-table/dotted-key-conflict.toml
new file mode 100644
index 00000000..58fa3b2a
--- /dev/null
+++ b/internal/toml-test/tests/invalid/inline-table/dotted-key-conflict.toml
@@ -0,0 +1 @@
+tbl = { a.b = "a_b", a.b.c = "a_b_c" }
diff --git a/internal/toml-test/tests/invalid/inline-table/nested_key_conflict.toml b/internal/toml-test/tests/invalid/inline-table/nested_key_conflict.toml
new file mode 100644
index 00000000..c567c3f5
--- /dev/null
+++ b/internal/toml-test/tests/invalid/inline-table/nested_key_conflict.toml
@@ -0,0 +1,2 @@
+tbl = { fruit = { apple.color = "red" }, fruit.apple.texture = { smooth = true } }
+
diff --git a/internal/toml-test/tests/invalid/spec/inline-table-2-0.toml b/internal/toml-test/tests/invalid/spec/inline-table-2-0.toml
new file mode 100644
index 00000000..7689e14f
--- /dev/null
+++ b/internal/toml-test/tests/invalid/spec/inline-table-2-0.toml
@@ -0,0 +1,3 @@
+[product]
+type = { name = "Nail" }
+type.edible = false  # INVALID
diff --git a/internal/toml-test/tests/invalid/spec/inline-table-3-0.toml b/internal/toml-test/tests/invalid/spec/inline-table-3-0.toml
new file mode 100644
index 00000000..d6937eb8
--- /dev/null
+++ b/internal/toml-test/tests/invalid/spec/inline-table-3-0.toml
@@ -0,0 +1,3 @@
+[product]
+type.name = "Nail"
+type = { edible = false }  # INVALID
diff --git a/internal/toml-test/tests/invalid/spec/key-value-pair-1.toml b/internal/toml-test/tests/invalid/spec/key-value-pair-1.toml
new file mode 100644
index 00000000..56f085a5
--- /dev/null
+++ b/internal/toml-test/tests/invalid/spec/key-value-pair-1.toml
@@ -0,0 +1 @@
+key = # INVALID
diff --git a/internal/toml-test/tests/invalid/spec/keys-2.toml b/internal/toml-test/tests/invalid/spec/keys-2.toml
new file mode 100644
index 00000000..1547a5c7
--- /dev/null
+++ b/internal/toml-test/tests/invalid/spec/keys-2.toml
@@ -0,0 +1,3 @@
+= "no key name"  # INVALID
+"" = "blank"     # VALID but discouraged
+'' = 'blank'     # VALID but discouraged
diff --git a/internal/toml-test/tests/invalid/spec/string-4-0.toml b/internal/toml-test/tests/invalid/spec/string-4-0.toml
new file mode 100644
index 00000000..72071ea9
--- /dev/null
+++ b/internal/toml-test/tests/invalid/spec/string-4-0.toml
@@ -0,0 +1,7 @@
+str4 = """Here are two quotation marks: "". Simple enough."""
+str5 = """Here are three quotation marks: """."""  # INVALID
+str5 = """Here are three quotation marks: ""\"."""
+str6 = """Here are fifteen quotation marks: ""\"""\"""\"""\"""\"."""
+
+# "This," she said, "is just a pointless statement."
+str7 = """"This," she said, "is just a pointless statement.""""
diff --git a/internal/toml-test/tests/invalid/spec/string-7-0.toml b/internal/toml-test/tests/invalid/spec/string-7-0.toml
new file mode 100644
index 00000000..7b20aeca
--- /dev/null
+++ b/internal/toml-test/tests/invalid/spec/string-7-0.toml
@@ -0,0 +1,7 @@
+quot15 = '''Here are fifteen quotation marks: """""""""""""""'''
+
+apos15 = '''Here are fifteen apostrophes: ''''''''''''''''''  # INVALID
+apos15 = "Here are fifteen apostrophes: '''''''''''''''"
+
+# 'That,' she said, 'is still pointless.'
+str = ''''That,' she said, 'is still pointless.''''
diff --git a/internal/toml-test/tests/invalid/spec/table-9-0.toml b/internal/toml-test/tests/invalid/spec/table-9-0.toml
new file mode 100644
index 00000000..adc38410
--- /dev/null
+++ b/internal/toml-test/tests/invalid/spec/table-9-0.toml
@@ -0,0 +1,9 @@
+[fruit]
+apple.color = "red"
+apple.taste.sweet = true
+
+[fruit.apple]  # INVALID
+# [fruit.apple.taste]  # INVALID
+
+[fruit.apple.texture]  # you can add sub-tables
+smooth = true
diff --git a/internal/toml-test/tests/invalid/spec/table-9-1.toml b/internal/toml-test/tests/invalid/spec/table-9-1.toml
new file mode 100644
index 00000000..3b5644ea
--- /dev/null
+++ b/internal/toml-test/tests/invalid/spec/table-9-1.toml
@@ -0,0 +1,9 @@
+[fruit]
+apple.color = "red"
+apple.taste.sweet = true
+
+# [fruit.apple]  # INVALID
+[fruit.apple.taste]  # INVALID
+
+[fruit.apple.texture]  # you can add sub-tables
+smooth = true
diff --git a/internal/toml-test/tests/invalid/table/append-to-array-with-dotted-keys.toml b/internal/toml-test/tests/invalid/table/append-to-array-with-dotted-keys.toml
new file mode 100644
index 00000000..1cae3a9b
--- /dev/null
+++ b/internal/toml-test/tests/invalid/table/append-to-array-with-dotted-keys.toml
@@ -0,0 +1,4 @@
+[[a.b]]
+
+[a]
+b.y = 2
diff --git a/internal/toml-test/tests/invalid/table/duplicate-key-dotted-array.toml b/internal/toml-test/tests/invalid/table/duplicate-key-dotted-array.toml
new file mode 100644
index 00000000..b75c2bc6
--- /dev/null
+++ b/internal/toml-test/tests/invalid/table/duplicate-key-dotted-array.toml
@@ -0,0 +1,4 @@
+[fruit]
+apple.color = "red"
+
+[[fruit.apple]]
diff --git a/internal/toml-test/tests/valid/comment/nonascii.json b/internal/toml-test/tests/valid/comment/nonascii.json
new file mode 100644
index 00000000..0967ef42
--- /dev/null
+++ b/internal/toml-test/tests/valid/comment/nonascii.json
@@ -0,0 +1 @@
+{}
diff --git a/internal/toml-test/tests/valid/comment/nonascii.toml b/internal/toml-test/tests/valid/comment/nonascii.toml
new file mode 100644
index 00000000..2fdde6b5
--- /dev/null
+++ b/internal/toml-test/tests/valid/comment/nonascii.toml
@@ -0,0 +1 @@
+# ~ € ÿ ퟿  ￿ 𐀀 􏿿
diff --git a/internal/toml-test/tests/valid/key/dotted-empty.json b/internal/toml-test/tests/valid/key/dotted-empty.json
new file mode 100644
index 00000000..4ca4b507
--- /dev/null
+++ b/internal/toml-test/tests/valid/key/dotted-empty.json
@@ -0,0 +1,22 @@
+{
+  "": {
+    "x": {
+      "type": "string",
+      "value": "empty.x"
+    }
+  },
+  "x": {
+    "": {
+      "type": "string",
+      "value": "x.empty"
+    }
+  },
+  "a": {
+    "": {
+      "": {
+        "type": "string",
+        "value": "empty.empty"
+      }
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/key/dotted-empty.toml b/internal/toml-test/tests/valid/key/dotted-empty.toml
new file mode 100644
index 00000000..45ef4c7e
--- /dev/null
+++ b/internal/toml-test/tests/valid/key/dotted-empty.toml
@@ -0,0 +1,4 @@
+''.x = "empty.x"
+x."" = "x.empty"
+[a]
+"".'' = "empty.empty"
diff --git a/internal/toml-test/tests/valid/key/quoted-unicode.json b/internal/toml-test/tests/valid/key/quoted-unicode.json
new file mode 100644
index 00000000..a51cc01f
--- /dev/null
+++ b/internal/toml-test/tests/valid/key/quoted-unicode.json
@@ -0,0 +1,22 @@
+{
+  "\u0000": {
+    "type": "string",
+    "value": "null"
+  },
+  "\\u0000": {
+    "type": "string",
+    "value": "different key"
+  },
+  "\b \f A \u007f \u0080 \u00ff \ud7ff \ue000 \uffff \ud800\udc00 \udbff\udfff": {
+    "type": "string",
+    "value": "escaped key"
+  },
+  "~ \u0080 \u00ff \ud7ff \ue000 \uffff \ud800\udc00 \udbff\udfff": {
+    "type": "string",
+    "value": "basic key"
+  },
+  "l ~ \u0080 \u00ff \ud7ff \ue000 \uffff \ud800\udc00 \udbff\udfff": {
+    "type": "string",
+    "value": "literal key"
+  }
+}
diff --git a/internal/toml-test/tests/valid/key/quoted-unicode.toml b/internal/toml-test/tests/valid/key/quoted-unicode.toml
new file mode 100644
index 00000000..bc31b729
--- /dev/null
+++ b/internal/toml-test/tests/valid/key/quoted-unicode.toml
@@ -0,0 +1,7 @@
+
+"\u0000" = "null"
+'\u0000' = "different key"
+"\u0008 \u000c \U00000041 \u007f \u0080 \u00ff \ud7ff \ue000 \uffff \U00010000 \U0010ffff" = "escaped key"
+
+"~ € ÿ ퟿  ￿ 𐀀 􏿿" = "basic key"
+'l ~ € ÿ ퟿  ￿ 𐀀 􏿿' = "literal key"
diff --git a/internal/toml-test/tests/valid/spec/array-0.json b/internal/toml-test/tests/valid/spec/array-0.json
new file mode 100644
index 00000000..f150e9db
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/array-0.json
@@ -0,0 +1,146 @@
+{
+  "colors": [
+    {
+      "type": "string",
+      "value": "red"
+    },
+    {
+      "type": "string",
+      "value": "yellow"
+    },
+    {
+      "type": "string",
+      "value": "green"
+    }
+  ],
+  "contributors": [
+    {
+      "type": "string",
+      "value": "Foo Bar \u003cfoo@example.com\u003e"
+    },
+    {
+      "email": {
+        "type": "string",
+        "value": "bazqux@example.com"
+      },
+      "name": {
+        "type": "string",
+        "value": "Baz Qux"
+      },
+      "url": {
+        "type": "string",
+        "value": "https://example.com/bazqux"
+      }
+    }
+  ],
+  "integers": [
+    {
+      "type": "integer",
+      "value": "1"
+    },
+    {
+      "type": "integer",
+      "value": "2"
+    },
+    {
+      "type": "integer",
+      "value": "3"
+    }
+  ],
+  "nested_arrays_of_ints": [
+    [
+      {
+        "type": "integer",
+        "value": "1"
+      },
+      {
+        "type": "integer",
+        "value": "2"
+      }
+    ],
+    [
+      {
+        "type": "integer",
+        "value": "3"
+      },
+      {
+        "type": "integer",
+        "value": "4"
+      },
+      {
+        "type": "integer",
+        "value": "5"
+      }
+    ]
+  ],
+  "nested_mixed_array": [
+    [
+      {
+        "type": "integer",
+        "value": "1"
+      },
+      {
+        "type": "integer",
+        "value": "2"
+      }
+    ],
+    [
+      {
+        "type": "string",
+        "value": "a"
+      },
+      {
+        "type": "string",
+        "value": "b"
+      },
+      {
+        "type": "string",
+        "value": "c"
+      }
+    ]
+  ],
+  "numbers": [
+    {
+      "type": "float",
+      "value": "0.1"
+    },
+    {
+      "type": "float",
+      "value": "0.2"
+    },
+    {
+      "type": "float",
+      "value": "0.5"
+    },
+    {
+      "type": "integer",
+      "value": "1"
+    },
+    {
+      "type": "integer",
+      "value": "2"
+    },
+    {
+      "type": "integer",
+      "value": "5"
+    }
+  ],
+  "string_array": [
+    {
+      "type": "string",
+      "value": "all"
+    },
+    {
+      "type": "string",
+      "value": "strings"
+    },
+    {
+      "type": "string",
+      "value": "are the same"
+    },
+    {
+      "type": "string",
+      "value": "type"
+    }
+  ]
+}
diff --git a/internal/toml-test/tests/valid/spec/array-0.toml b/internal/toml-test/tests/valid/spec/array-0.toml
new file mode 100644
index 00000000..467a8bc0
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/array-0.toml
@@ -0,0 +1,12 @@
+integers = [ 1, 2, 3 ]
+colors = [ "red", "yellow", "green" ]
+nested_arrays_of_ints = [ [ 1, 2 ], [3, 4, 5] ]
+nested_mixed_array = [ [ 1, 2 ], ["a", "b", "c"] ]
+string_array = [ "all", 'strings', """are the same""", '''type''' ]
+
+# Mixed-type arrays are allowed
+numbers = [ 0.1, 0.2, 0.5, 1, 2, 5 ]
+contributors = [
+  "Foo Bar <foo@example.com>",
+  { name = "Baz Qux", email = "bazqux@example.com", url = "https://example.com/bazqux" }
+]
diff --git a/internal/toml-test/tests/valid/spec/array-1.json b/internal/toml-test/tests/valid/spec/array-1.json
new file mode 100644
index 00000000..334c3331
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/array-1.json
@@ -0,0 +1,26 @@
+{
+  "integers2": [
+    {
+      "type": "integer",
+      "value": "1"
+    },
+    {
+      "type": "integer",
+      "value": "2"
+    },
+    {
+      "type": "integer",
+      "value": "3"
+    }
+  ],
+  "integers3": [
+    {
+      "type": "integer",
+      "value": "1"
+    },
+    {
+      "type": "integer",
+      "value": "2"
+    }
+  ]
+}
diff --git a/internal/toml-test/tests/valid/spec/array-1.toml b/internal/toml-test/tests/valid/spec/array-1.toml
new file mode 100644
index 00000000..6acd9ca2
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/array-1.toml
@@ -0,0 +1,8 @@
+integers2 = [
+  1, 2, 3
+]
+
+integers3 = [
+  1,
+  2, # this is ok
+]
diff --git a/internal/toml-test/tests/valid/spec/array-of-tables-0.json b/internal/toml-test/tests/valid/spec/array-of-tables-0.json
new file mode 100644
index 00000000..23287571
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/array-of-tables-0.json
@@ -0,0 +1,29 @@
+{
+  "products": [
+    {
+      "name": {
+        "type": "string",
+        "value": "Hammer"
+      },
+      "sku": {
+        "type": "integer",
+        "value": "738594937"
+      }
+    },
+    {},
+    {
+      "color": {
+        "type": "string",
+        "value": "gray"
+      },
+      "name": {
+        "type": "string",
+        "value": "Nail"
+      },
+      "sku": {
+        "type": "integer",
+        "value": "284758393"
+      }
+    }
+  ]
+}
diff --git a/internal/toml-test/tests/valid/spec/array-of-tables-0.toml b/internal/toml-test/tests/valid/spec/array-of-tables-0.toml
new file mode 100644
index 00000000..544d142d
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/array-of-tables-0.toml
@@ -0,0 +1,11 @@
+[[products]]
+name = "Hammer"
+sku = 738594937
+
+[[products]]  # empty table within the array
+
+[[products]]
+name = "Nail"
+sku = 284758393
+
+color = "gray"
diff --git a/internal/toml-test/tests/valid/spec/array-of-tables-1.json b/internal/toml-test/tests/valid/spec/array-of-tables-1.json
new file mode 100644
index 00000000..17d49187
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/array-of-tables-1.json
@@ -0,0 +1,48 @@
+{
+  "fruits": [
+    {
+      "name": {
+        "type": "string",
+        "value": "apple"
+      },
+      "physical": {
+        "color": {
+          "type": "string",
+          "value": "red"
+        },
+        "shape": {
+          "type": "string",
+          "value": "round"
+        }
+      },
+      "varieties": [
+        {
+          "name": {
+            "type": "string",
+            "value": "red delicious"
+          }
+        },
+        {
+          "name": {
+            "type": "string",
+            "value": "granny smith"
+          }
+        }
+      ]
+    },
+    {
+      "name": {
+        "type": "string",
+        "value": "banana"
+      },
+      "varieties": [
+        {
+          "name": {
+            "type": "string",
+            "value": "plantain"
+          }
+        }
+      ]
+    }
+  ]
+}
diff --git a/internal/toml-test/tests/valid/spec/array-of-tables-1.toml b/internal/toml-test/tests/valid/spec/array-of-tables-1.toml
new file mode 100644
index 00000000..7a3971f3
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/array-of-tables-1.toml
@@ -0,0 +1,19 @@
+[[fruits]]
+name = "apple"
+
+[fruits.physical]  # subtable
+color = "red"
+shape = "round"
+
+[[fruits.varieties]]  # nested array of tables
+name = "red delicious"
+
+[[fruits.varieties]]
+name = "granny smith"
+
+
+[[fruits]]
+name = "banana"
+
+[[fruits.varieties]]
+name = "plantain"
diff --git a/internal/toml-test/tests/valid/spec/array-of-tables-2.json b/internal/toml-test/tests/valid/spec/array-of-tables-2.json
new file mode 100644
index 00000000..f2e3f367
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/array-of-tables-2.json
@@ -0,0 +1,46 @@
+{
+  "points": [
+    {
+      "x": {
+        "type": "integer",
+        "value": "1"
+      },
+      "y": {
+        "type": "integer",
+        "value": "2"
+      },
+      "z": {
+        "type": "integer",
+        "value": "3"
+      }
+    },
+    {
+      "x": {
+        "type": "integer",
+        "value": "7"
+      },
+      "y": {
+        "type": "integer",
+        "value": "8"
+      },
+      "z": {
+        "type": "integer",
+        "value": "9"
+      }
+    },
+    {
+      "x": {
+        "type": "integer",
+        "value": "2"
+      },
+      "y": {
+        "type": "integer",
+        "value": "4"
+      },
+      "z": {
+        "type": "integer",
+        "value": "8"
+      }
+    }
+  ]
+}
diff --git a/internal/toml-test/tests/valid/spec/array-of-tables-2.toml b/internal/toml-test/tests/valid/spec/array-of-tables-2.toml
new file mode 100644
index 00000000..ba5584af
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/array-of-tables-2.toml
@@ -0,0 +1,3 @@
+points = [ { x = 1, y = 2, z = 3 },
+           { x = 7, y = 8, z = 9 },
+           { x = 2, y = 4, z = 8 } ]
diff --git a/internal/toml-test/tests/valid/spec/boolean-0.json b/internal/toml-test/tests/valid/spec/boolean-0.json
new file mode 100644
index 00000000..f956ec02
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/boolean-0.json
@@ -0,0 +1,10 @@
+{
+  "bool1": {
+    "type": "bool",
+    "value": "true"
+  },
+  "bool2": {
+    "type": "bool",
+    "value": "false"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/boolean-0.toml b/internal/toml-test/tests/valid/spec/boolean-0.toml
new file mode 100644
index 00000000..1f80fbd1
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/boolean-0.toml
@@ -0,0 +1,2 @@
+bool1 = true
+bool2 = false
diff --git a/internal/toml-test/tests/valid/spec/comment-0.json b/internal/toml-test/tests/valid/spec/comment-0.json
new file mode 100644
index 00000000..d9796079
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/comment-0.json
@@ -0,0 +1,10 @@
+{
+  "another": {
+    "type": "string",
+    "value": "# This is not a comment"
+  },
+  "key": {
+    "type": "string",
+    "value": "value"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/comment-0.toml b/internal/toml-test/tests/valid/spec/comment-0.toml
new file mode 100644
index 00000000..fae57c60
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/comment-0.toml
@@ -0,0 +1,3 @@
+# This is a full-line comment
+key = "value"  # This is a comment at the end of a line
+another = "# This is not a comment"
diff --git a/internal/toml-test/tests/valid/spec/float-0.json b/internal/toml-test/tests/valid/spec/float-0.json
new file mode 100644
index 00000000..ae7d5a5c
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/float-0.json
@@ -0,0 +1,30 @@
+{
+  "flt1": {
+    "type": "float",
+    "value": "1"
+  },
+  "flt2": {
+    "type": "float",
+    "value": "3.1415"
+  },
+  "flt3": {
+    "type": "float",
+    "value": "-0.01"
+  },
+  "flt4": {
+    "type": "float",
+    "value": "5e+22"
+  },
+  "flt5": {
+    "type": "float",
+    "value": "1e+06"
+  },
+  "flt6": {
+    "type": "float",
+    "value": "-0.02"
+  },
+  "flt7": {
+    "type": "float",
+    "value": "6.626e-34"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/float-0.toml b/internal/toml-test/tests/valid/spec/float-0.toml
new file mode 100644
index 00000000..7b29c655
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/float-0.toml
@@ -0,0 +1,12 @@
+# fractional
+flt1 = +1.0
+flt2 = 3.1415
+flt3 = -0.01
+
+# exponent
+flt4 = 5e+22
+flt5 = 1e06
+flt6 = -2E-2
+
+# both
+flt7 = 6.626e-34
diff --git a/internal/toml-test/tests/valid/spec/float-1.json b/internal/toml-test/tests/valid/spec/float-1.json
new file mode 100644
index 00000000..592a4d2e
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/float-1.json
@@ -0,0 +1,6 @@
+{
+  "flt8": {
+    "type": "float",
+    "value": "224617.445991228"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/float-1.toml b/internal/toml-test/tests/valid/spec/float-1.toml
new file mode 100644
index 00000000..3c8f0aa5
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/float-1.toml
@@ -0,0 +1 @@
+flt8 = 224_617.445_991_228
diff --git a/internal/toml-test/tests/valid/spec/float-2.json b/internal/toml-test/tests/valid/spec/float-2.json
new file mode 100644
index 00000000..95077204
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/float-2.json
@@ -0,0 +1,26 @@
+{
+  "sf1": {
+    "type": "float",
+    "value": "+Inf"
+  },
+  "sf2": {
+    "type": "float",
+    "value": "+Inf"
+  },
+  "sf3": {
+    "type": "float",
+    "value": "-Inf"
+  },
+  "sf4": {
+    "type": "float",
+    "value": "nan"
+  },
+  "sf5": {
+    "type": "float",
+    "value": "nan"
+  },
+  "sf6": {
+    "type": "float",
+    "value": "nan"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/float-2.toml b/internal/toml-test/tests/valid/spec/float-2.toml
new file mode 100644
index 00000000..4cede55d
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/float-2.toml
@@ -0,0 +1,9 @@
+# infinity
+sf1 = inf  # positive infinity
+sf2 = +inf # positive infinity
+sf3 = -inf # negative infinity
+
+# not a number
+sf4 = nan  # actual sNaN/qNaN encoding is implementation-specific
+sf5 = +nan # same as `nan`
+sf6 = -nan # valid, actual encoding is implementation-specific
diff --git a/internal/toml-test/tests/valid/spec/inline-table-0.json b/internal/toml-test/tests/valid/spec/inline-table-0.json
new file mode 100644
index 00000000..8c0d3150
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/inline-table-0.json
@@ -0,0 +1,30 @@
+{
+  "animal": {
+    "type": {
+      "name": {
+        "type": "string",
+        "value": "pug"
+      }
+    }
+  },
+  "name": {
+    "first": {
+      "type": "string",
+      "value": "Tom"
+    },
+    "last": {
+      "type": "string",
+      "value": "Preston-Werner"
+    }
+  },
+  "point": {
+    "x": {
+      "type": "integer",
+      "value": "1"
+    },
+    "y": {
+      "type": "integer",
+      "value": "2"
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/inline-table-0.toml b/internal/toml-test/tests/valid/spec/inline-table-0.toml
new file mode 100644
index 00000000..26062b51
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/inline-table-0.toml
@@ -0,0 +1,3 @@
+name = { first = "Tom", last = "Preston-Werner" }
+point = { x = 1, y = 2 }
+animal = { type.name = "pug" }
diff --git a/internal/toml-test/tests/valid/spec/inline-table-1.json b/internal/toml-test/tests/valid/spec/inline-table-1.json
new file mode 100644
index 00000000..8c0d3150
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/inline-table-1.json
@@ -0,0 +1,30 @@
+{
+  "animal": {
+    "type": {
+      "name": {
+        "type": "string",
+        "value": "pug"
+      }
+    }
+  },
+  "name": {
+    "first": {
+      "type": "string",
+      "value": "Tom"
+    },
+    "last": {
+      "type": "string",
+      "value": "Preston-Werner"
+    }
+  },
+  "point": {
+    "x": {
+      "type": "integer",
+      "value": "1"
+    },
+    "y": {
+      "type": "integer",
+      "value": "2"
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/inline-table-1.toml b/internal/toml-test/tests/valid/spec/inline-table-1.toml
new file mode 100644
index 00000000..6f72155f
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/inline-table-1.toml
@@ -0,0 +1,10 @@
+[name]
+first = "Tom"
+last = "Preston-Werner"
+
+[point]
+x = 1
+y = 2
+
+[animal]
+type.name = "pug"
diff --git a/internal/toml-test/tests/valid/spec/inline-table-2.json b/internal/toml-test/tests/valid/spec/inline-table-2.json
new file mode 100644
index 00000000..406691d1
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/inline-table-2.json
@@ -0,0 +1,10 @@
+{
+  "product": {
+    "type": {
+      "name": {
+        "type": "string",
+        "value": "Nail"
+      }
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/inline-table-2.toml b/internal/toml-test/tests/valid/spec/inline-table-2.toml
new file mode 100644
index 00000000..aabb5005
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/inline-table-2.toml
@@ -0,0 +1,3 @@
+[product]
+type = { name = "Nail" }
+# type.edible = false  # INVALID
diff --git a/internal/toml-test/tests/valid/spec/inline-table-3.json b/internal/toml-test/tests/valid/spec/inline-table-3.json
new file mode 100644
index 00000000..406691d1
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/inline-table-3.json
@@ -0,0 +1,10 @@
+{
+  "product": {
+    "type": {
+      "name": {
+        "type": "string",
+        "value": "Nail"
+      }
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/inline-table-3.toml b/internal/toml-test/tests/valid/spec/inline-table-3.toml
new file mode 100644
index 00000000..970949c3
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/inline-table-3.toml
@@ -0,0 +1,3 @@
+[product]
+type.name = "Nail"
+# type = { edible = false }  # INVALID
diff --git a/internal/toml-test/tests/valid/spec/integer-0.json b/internal/toml-test/tests/valid/spec/integer-0.json
new file mode 100644
index 00000000..72cbbbbf
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/integer-0.json
@@ -0,0 +1,18 @@
+{
+  "int1": {
+    "type": "integer",
+    "value": "99"
+  },
+  "int2": {
+    "type": "integer",
+    "value": "42"
+  },
+  "int3": {
+    "type": "integer",
+    "value": "0"
+  },
+  "int4": {
+    "type": "integer",
+    "value": "-17"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/integer-0.toml b/internal/toml-test/tests/valid/spec/integer-0.toml
new file mode 100644
index 00000000..da14ea2a
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/integer-0.toml
@@ -0,0 +1,4 @@
+int1 = +99
+int2 = 42
+int3 = 0
+int4 = -17
diff --git a/internal/toml-test/tests/valid/spec/integer-1.json b/internal/toml-test/tests/valid/spec/integer-1.json
new file mode 100644
index 00000000..f431f47d
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/integer-1.json
@@ -0,0 +1,18 @@
+{
+  "int5": {
+    "type": "integer",
+    "value": "1000"
+  },
+  "int6": {
+    "type": "integer",
+    "value": "5349221"
+  },
+  "int7": {
+    "type": "integer",
+    "value": "5349221"
+  },
+  "int8": {
+    "type": "integer",
+    "value": "12345"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/integer-1.toml b/internal/toml-test/tests/valid/spec/integer-1.toml
new file mode 100644
index 00000000..0c4b6190
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/integer-1.toml
@@ -0,0 +1,4 @@
+int5 = 1_000
+int6 = 5_349_221
+int7 = 53_49_221  # Indian number system grouping
+int8 = 1_2_3_4_5  # VALID but discouraged
diff --git a/internal/toml-test/tests/valid/spec/integer-2.json b/internal/toml-test/tests/valid/spec/integer-2.json
new file mode 100644
index 00000000..b937b2b8
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/integer-2.json
@@ -0,0 +1,26 @@
+{
+  "bin1": {
+    "type": "integer",
+    "value": "214"
+  },
+  "hex1": {
+    "type": "integer",
+    "value": "3735928559"
+  },
+  "hex2": {
+    "type": "integer",
+    "value": "3735928559"
+  },
+  "hex3": {
+    "type": "integer",
+    "value": "3735928559"
+  },
+  "oct1": {
+    "type": "integer",
+    "value": "342391"
+  },
+  "oct2": {
+    "type": "integer",
+    "value": "493"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/integer-2.toml b/internal/toml-test/tests/valid/spec/integer-2.toml
new file mode 100644
index 00000000..ecffca63
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/integer-2.toml
@@ -0,0 +1,11 @@
+# hexadecimal with prefix `0x`
+hex1 = 0xDEADBEEF
+hex2 = 0xdeadbeef
+hex3 = 0xdead_beef
+
+# octal with prefix `0o`
+oct1 = 0o01234567
+oct2 = 0o755 # useful for Unix file permissions
+
+# binary with prefix `0b`
+bin1 = 0b11010110
diff --git a/internal/toml-test/tests/valid/spec/key-value-pair-0.json b/internal/toml-test/tests/valid/spec/key-value-pair-0.json
new file mode 100644
index 00000000..af3154ab
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/key-value-pair-0.json
@@ -0,0 +1,6 @@
+{
+  "key": {
+    "type": "string",
+    "value": "value"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/key-value-pair-0.toml b/internal/toml-test/tests/valid/spec/key-value-pair-0.toml
new file mode 100644
index 00000000..e5b34ebc
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/key-value-pair-0.toml
@@ -0,0 +1 @@
+key = "value"
diff --git a/internal/toml-test/tests/valid/spec/keys-0.json b/internal/toml-test/tests/valid/spec/keys-0.json
new file mode 100644
index 00000000..6130c71d
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-0.json
@@ -0,0 +1,18 @@
+{
+  "1234": {
+    "type": "string",
+    "value": "value"
+  },
+  "bare-key": {
+    "type": "string",
+    "value": "value"
+  },
+  "bare_key": {
+    "type": "string",
+    "value": "value"
+  },
+  "key": {
+    "type": "string",
+    "value": "value"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/keys-0.toml b/internal/toml-test/tests/valid/spec/keys-0.toml
new file mode 100644
index 00000000..657ff241
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-0.toml
@@ -0,0 +1,4 @@
+key = "value"
+bare_key = "value"
+bare-key = "value"
+1234 = "value"
diff --git a/internal/toml-test/tests/valid/spec/keys-1.json b/internal/toml-test/tests/valid/spec/keys-1.json
new file mode 100644
index 00000000..fb756032
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-1.json
@@ -0,0 +1,22 @@
+{
+  "127.0.0.1": {
+    "type": "string",
+    "value": "value"
+  },
+  "character encoding": {
+    "type": "string",
+    "value": "value"
+  },
+  "key2": {
+    "type": "string",
+    "value": "value"
+  },
+  "quoted \"value\"": {
+    "type": "string",
+    "value": "value"
+  },
+  "ʎǝʞ": {
+    "type": "string",
+    "value": "value"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/keys-1.toml b/internal/toml-test/tests/valid/spec/keys-1.toml
new file mode 100644
index 00000000..cc2d1d00
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-1.toml
@@ -0,0 +1,5 @@
+"127.0.0.1" = "value"
+"character encoding" = "value"
+"ʎǝʞ" = "value"
+'key2' = "value"
+'quoted "value"' = "value"
diff --git a/internal/toml-test/tests/valid/spec/keys-3.json b/internal/toml-test/tests/valid/spec/keys-3.json
new file mode 100644
index 00000000..b8ee7193
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-3.json
@@ -0,0 +1,22 @@
+{
+  "name": {
+    "type": "string",
+    "value": "Orange"
+  },
+  "physical": {
+    "color": {
+      "type": "string",
+      "value": "orange"
+    },
+    "shape": {
+      "type": "string",
+      "value": "round"
+    }
+  },
+  "site": {
+    "google.com": {
+      "type": "bool",
+      "value": "true"
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/keys-3.toml b/internal/toml-test/tests/valid/spec/keys-3.toml
new file mode 100644
index 00000000..8f835713
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-3.toml
@@ -0,0 +1,4 @@
+name = "Orange"
+physical.color = "orange"
+physical.shape = "round"
+site."google.com" = true
diff --git a/internal/toml-test/tests/valid/spec/keys-4.json b/internal/toml-test/tests/valid/spec/keys-4.json
new file mode 100644
index 00000000..c33966a5
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-4.json
@@ -0,0 +1,16 @@
+{
+  "fruit": {
+    "color": {
+      "type": "string",
+      "value": "yellow"
+    },
+    "flavor": {
+      "type": "string",
+      "value": "banana"
+    },
+    "name": {
+      "type": "string",
+      "value": "banana"
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/keys-4.toml b/internal/toml-test/tests/valid/spec/keys-4.toml
new file mode 100644
index 00000000..75bf90b5
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-4.toml
@@ -0,0 +1,3 @@
+fruit.name = "banana"     # this is best practice
+fruit. color = "yellow"    # same as fruit.color
+fruit . flavor = "banana"   # same as fruit.flavor
diff --git a/internal/toml-test/tests/valid/spec/keys-5.json b/internal/toml-test/tests/valid/spec/keys-5.json
new file mode 100644
index 00000000..482b362d
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-5.json
@@ -0,0 +1,30 @@
+{
+  "apple": {
+    "color": {
+      "type": "string",
+      "value": "red"
+    },
+    "skin": {
+      "type": "string",
+      "value": "thin"
+    },
+    "type": {
+      "type": "string",
+      "value": "fruit"
+    }
+  },
+  "orange": {
+    "color": {
+      "type": "string",
+      "value": "orange"
+    },
+    "skin": {
+      "type": "string",
+      "value": "thick"
+    },
+    "type": {
+      "type": "string",
+      "value": "fruit"
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/keys-5.toml b/internal/toml-test/tests/valid/spec/keys-5.toml
new file mode 100644
index 00000000..dc94a8c9
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-5.toml
@@ -0,0 +1,10 @@
+# VALID BUT DISCOURAGED
+
+apple.type = "fruit"
+orange.type = "fruit"
+
+apple.skin = "thin"
+orange.skin = "thick"
+
+apple.color = "red"
+orange.color = "orange"
diff --git a/internal/toml-test/tests/valid/spec/keys-6.json b/internal/toml-test/tests/valid/spec/keys-6.json
new file mode 100644
index 00000000..482b362d
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-6.json
@@ -0,0 +1,30 @@
+{
+  "apple": {
+    "color": {
+      "type": "string",
+      "value": "red"
+    },
+    "skin": {
+      "type": "string",
+      "value": "thin"
+    },
+    "type": {
+      "type": "string",
+      "value": "fruit"
+    }
+  },
+  "orange": {
+    "color": {
+      "type": "string",
+      "value": "orange"
+    },
+    "skin": {
+      "type": "string",
+      "value": "thick"
+    },
+    "type": {
+      "type": "string",
+      "value": "fruit"
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/keys-6.toml b/internal/toml-test/tests/valid/spec/keys-6.toml
new file mode 100644
index 00000000..705686c9
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-6.toml
@@ -0,0 +1,9 @@
+# RECOMMENDED
+
+apple.type = "fruit"
+apple.skin = "thin"
+apple.color = "red"
+
+orange.type = "fruit"
+orange.skin = "thick"
+orange.color = "orange"
diff --git a/internal/toml-test/tests/valid/spec/keys-7.json b/internal/toml-test/tests/valid/spec/keys-7.json
new file mode 100644
index 00000000..5ab0e066
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-7.json
@@ -0,0 +1,8 @@
+{
+  "3": {
+    "14159": {
+      "type": "string",
+      "value": "pi"
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/keys-7.toml b/internal/toml-test/tests/valid/spec/keys-7.toml
new file mode 100644
index 00000000..2efd659b
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/keys-7.toml
@@ -0,0 +1 @@
+3.14159 = "pi"
diff --git a/internal/toml-test/tests/valid/spec/local-date-0.json b/internal/toml-test/tests/valid/spec/local-date-0.json
new file mode 100644
index 00000000..9e281f54
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/local-date-0.json
@@ -0,0 +1,6 @@
+{
+  "ld1": {
+    "type": "date-local",
+    "value": "1979-05-27"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/local-date-0.toml b/internal/toml-test/tests/valid/spec/local-date-0.toml
new file mode 100644
index 00000000..6670e5dd
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/local-date-0.toml
@@ -0,0 +1 @@
+ld1 = 1979-05-27
diff --git a/internal/toml-test/tests/valid/spec/local-date-time-0.json b/internal/toml-test/tests/valid/spec/local-date-time-0.json
new file mode 100644
index 00000000..d42d49d6
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/local-date-time-0.json
@@ -0,0 +1,10 @@
+{
+  "ldt1": {
+    "type": "datetime-local",
+    "value": "1979-05-27T07:32:00"
+  },
+  "ldt2": {
+    "type": "datetime-local",
+    "value": "1979-05-27T00:32:00.999999"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/local-date-time-0.toml b/internal/toml-test/tests/valid/spec/local-date-time-0.toml
new file mode 100644
index 00000000..38700d21
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/local-date-time-0.toml
@@ -0,0 +1,2 @@
+ldt1 = 1979-05-27T07:32:00
+ldt2 = 1979-05-27T00:32:00.999999
diff --git a/internal/toml-test/tests/valid/spec/local-time-0.json b/internal/toml-test/tests/valid/spec/local-time-0.json
new file mode 100644
index 00000000..93803fc3
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/local-time-0.json
@@ -0,0 +1,10 @@
+{
+  "lt1": {
+    "type": "time-local",
+    "value": "07:32:00"
+  },
+  "lt2": {
+    "type": "time-local",
+    "value": "00:32:00.999999"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/local-time-0.toml b/internal/toml-test/tests/valid/spec/local-time-0.toml
new file mode 100644
index 00000000..dbd058a6
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/local-time-0.toml
@@ -0,0 +1,2 @@
+lt1 = 07:32:00
+lt2 = 00:32:00.999999
diff --git a/internal/toml-test/tests/valid/spec/offset-date-time-0.json b/internal/toml-test/tests/valid/spec/offset-date-time-0.json
new file mode 100644
index 00000000..26d59a8c
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/offset-date-time-0.json
@@ -0,0 +1,14 @@
+{
+  "odt1": {
+    "type": "datetime",
+    "value": "1979-05-27T07:32:00Z"
+  },
+  "odt2": {
+    "type": "datetime",
+    "value": "1979-05-27T00:32:00-07:00"
+  },
+  "odt3": {
+    "type": "datetime",
+    "value": "1979-05-27T00:32:00.999999-07:00"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/offset-date-time-0.toml b/internal/toml-test/tests/valid/spec/offset-date-time-0.toml
new file mode 100644
index 00000000..52eaff2f
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/offset-date-time-0.toml
@@ -0,0 +1,3 @@
+odt1 = 1979-05-27T07:32:00Z
+odt2 = 1979-05-27T00:32:00-07:00
+odt3 = 1979-05-27T00:32:00.999999-07:00
diff --git a/internal/toml-test/tests/valid/spec/offset-date-time-1.json b/internal/toml-test/tests/valid/spec/offset-date-time-1.json
new file mode 100644
index 00000000..fa17a4ea
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/offset-date-time-1.json
@@ -0,0 +1,6 @@
+{
+  "odt4": {
+    "type": "datetime",
+    "value": "1979-05-27T07:32:00Z"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/offset-date-time-1.toml b/internal/toml-test/tests/valid/spec/offset-date-time-1.toml
new file mode 100644
index 00000000..da9bd3bc
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/offset-date-time-1.toml
@@ -0,0 +1 @@
+odt4 = 1979-05-27 07:32:00Z
diff --git a/internal/toml-test/tests/valid/spec/string-0.json b/internal/toml-test/tests/valid/spec/string-0.json
new file mode 100644
index 00000000..3c26fa17
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-0.json
@@ -0,0 +1,6 @@
+{
+  "str": {
+    "type": "string",
+    "value": "I'm a string. \"You can quote me\". Name\tJosé\nLocation\tSF."
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/string-0.toml b/internal/toml-test/tests/valid/spec/string-0.toml
new file mode 100644
index 00000000..b6115490
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-0.toml
@@ -0,0 +1 @@
+str = "I'm a string. \"You can quote me\". Name\tJos\u00E9\nLocation\tSF."
diff --git a/internal/toml-test/tests/valid/spec/string-1.json b/internal/toml-test/tests/valid/spec/string-1.json
new file mode 100644
index 00000000..316d0f4e
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-1.json
@@ -0,0 +1,6 @@
+{
+  "str1": {
+    "type": "string",
+    "value": "Roses are red\nViolets are blue"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/string-1.toml b/internal/toml-test/tests/valid/spec/string-1.toml
new file mode 100644
index 00000000..337ad080
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-1.toml
@@ -0,0 +1,3 @@
+str1 = """
+Roses are red
+Violets are blue"""
diff --git a/internal/toml-test/tests/valid/spec/string-2.json b/internal/toml-test/tests/valid/spec/string-2.json
new file mode 100644
index 00000000..09faeb6b
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-2.json
@@ -0,0 +1,10 @@
+{
+  "str2": {
+    "type": "string",
+    "value": "Roses are red\nViolets are blue"
+  },
+  "str3": {
+    "type": "string",
+    "value": "Roses are red\r\nViolets are blue"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/string-2.toml b/internal/toml-test/tests/valid/spec/string-2.toml
new file mode 100644
index 00000000..ce5a73be
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-2.toml
@@ -0,0 +1,5 @@
+# On a Unix system, the above multi-line string will most likely be the same as:
+str2 = "Roses are red\nViolets are blue"
+
+# On a Windows system, it will most likely be equivalent to:
+str3 = "Roses are red\r\nViolets are blue"
diff --git a/internal/toml-test/tests/valid/spec/string-3.json b/internal/toml-test/tests/valid/spec/string-3.json
new file mode 100644
index 00000000..c55424f7
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-3.json
@@ -0,0 +1,14 @@
+{
+  "str1": {
+    "type": "string",
+    "value": "The quick brown fox jumps over the lazy dog."
+  },
+  "str2": {
+    "type": "string",
+    "value": "The quick brown fox jumps over the lazy dog."
+  },
+  "str3": {
+    "type": "string",
+    "value": "The quick brown fox jumps over the lazy dog."
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/string-3.toml b/internal/toml-test/tests/valid/spec/string-3.toml
new file mode 100644
index 00000000..20b4aa7c
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-3.toml
@@ -0,0 +1,15 @@
+# The following strings are byte-for-byte equivalent:
+str1 = "The quick brown fox jumps over the lazy dog."
+
+str2 = """
+The quick brown \
+
+
+  fox jumps over \
+    the lazy dog."""
+
+str3 = """\
+       The quick brown \
+       fox jumps over \
+       the lazy dog.\
+       """
diff --git a/internal/toml-test/tests/valid/spec/string-4.json b/internal/toml-test/tests/valid/spec/string-4.json
new file mode 100644
index 00000000..52ddb197
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-4.json
@@ -0,0 +1,18 @@
+{
+  "str4": {
+    "type": "string",
+    "value": "Here are two quotation marks: \"\". Simple enough."
+  },
+  "str5": {
+    "type": "string",
+    "value": "Here are three quotation marks: \"\"\"."
+  },
+  "str6": {
+    "type": "string",
+    "value": "Here are fifteen quotation marks: \"\"\"\"\"\"\"\"\"\"\"\"\"\"\"."
+  },
+  "str7": {
+    "type": "string",
+    "value": "\"This,\" she said, \"is just a pointless statement.\""
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/string-4.toml b/internal/toml-test/tests/valid/spec/string-4.toml
new file mode 100644
index 00000000..8f51b117
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-4.toml
@@ -0,0 +1,7 @@
+str4 = """Here are two quotation marks: "". Simple enough."""
+# str5 = """Here are three quotation marks: """."""  # INVALID
+str5 = """Here are three quotation marks: ""\"."""
+str6 = """Here are fifteen quotation marks: ""\"""\"""\"""\"""\"."""
+
+# "This," she said, "is just a pointless statement."
+str7 = """"This," she said, "is just a pointless statement.""""
diff --git a/internal/toml-test/tests/valid/spec/string-5.json b/internal/toml-test/tests/valid/spec/string-5.json
new file mode 100644
index 00000000..bce72d90
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-5.json
@@ -0,0 +1,18 @@
+{
+  "quoted": {
+    "type": "string",
+    "value": "Tom \"Dubs\" Preston-Werner"
+  },
+  "regex": {
+    "type": "string",
+    "value": "\u003c\\i\\c*\\s*\u003e"
+  },
+  "winpath": {
+    "type": "string",
+    "value": "C:\\Users\\nodejs\\templates"
+  },
+  "winpath2": {
+    "type": "string",
+    "value": "\\\\ServerX\\admin$\\system32\\"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/string-5.toml b/internal/toml-test/tests/valid/spec/string-5.toml
new file mode 100644
index 00000000..36772bb6
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-5.toml
@@ -0,0 +1,5 @@
+# What you see is what you get.
+winpath  = 'C:\Users\nodejs\templates'
+winpath2 = '\\ServerX\admin$\system32\'
+quoted   = 'Tom "Dubs" Preston-Werner'
+regex    = '<\i\c*\s*>'
diff --git a/internal/toml-test/tests/valid/spec/string-6.json b/internal/toml-test/tests/valid/spec/string-6.json
new file mode 100644
index 00000000..aa7663e0
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-6.json
@@ -0,0 +1,10 @@
+{
+  "lines": {
+    "type": "string",
+    "value": "The first newline is\ntrimmed in raw strings.\n   All other whitespace\n   is preserved.\n"
+  },
+  "regex2": {
+    "type": "string",
+    "value": "I [dw]on't need \\d{2} apples"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/string-6.toml b/internal/toml-test/tests/valid/spec/string-6.toml
new file mode 100644
index 00000000..bc88494c
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-6.toml
@@ -0,0 +1,7 @@
+regex2 = '''I [dw]on't need \d{2} apples'''
+lines  = '''
+The first newline is
+trimmed in raw strings.
+   All other whitespace
+   is preserved.
+'''
diff --git a/internal/toml-test/tests/valid/spec/string-7.json b/internal/toml-test/tests/valid/spec/string-7.json
new file mode 100644
index 00000000..ad0fff21
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-7.json
@@ -0,0 +1,14 @@
+{
+  "apos15": {
+    "type": "string",
+    "value": "Here are fifteen apostrophes: '''''''''''''''"
+  },
+  "quot15": {
+    "type": "string",
+    "value": "Here are fifteen quotation marks: \"\"\"\"\"\"\"\"\"\"\"\"\"\"\""
+  },
+  "str": {
+    "type": "string",
+    "value": "'That,' she said, 'is still pointless.'"
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/string-7.toml b/internal/toml-test/tests/valid/spec/string-7.toml
new file mode 100644
index 00000000..82890b08
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/string-7.toml
@@ -0,0 +1,7 @@
+quot15 = '''Here are fifteen quotation marks: """""""""""""""'''
+
+# apos15 = '''Here are fifteen apostrophes: ''''''''''''''''''  # INVALID
+apos15 = "Here are fifteen apostrophes: '''''''''''''''"
+
+# 'That,' she said, 'is still pointless.'
+str = ''''That,' she said, 'is still pointless.''''
diff --git a/internal/toml-test/tests/valid/spec/table-0.json b/internal/toml-test/tests/valid/spec/table-0.json
new file mode 100644
index 00000000..b6e7fb50
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-0.json
@@ -0,0 +1,3 @@
+{
+  "table": {}
+}
diff --git a/internal/toml-test/tests/valid/spec/table-0.toml b/internal/toml-test/tests/valid/spec/table-0.toml
new file mode 100644
index 00000000..f1098fda
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-0.toml
@@ -0,0 +1 @@
+[table]
diff --git a/internal/toml-test/tests/valid/spec/table-1.json b/internal/toml-test/tests/valid/spec/table-1.json
new file mode 100644
index 00000000..f8521e0f
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-1.json
@@ -0,0 +1,22 @@
+{
+  "table-1": {
+    "key1": {
+      "type": "string",
+      "value": "some string"
+    },
+    "key2": {
+      "type": "integer",
+      "value": "123"
+    }
+  },
+  "table-2": {
+    "key1": {
+      "type": "string",
+      "value": "another string"
+    },
+    "key2": {
+      "type": "integer",
+      "value": "456"
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/table-1.toml b/internal/toml-test/tests/valid/spec/table-1.toml
new file mode 100644
index 00000000..6b4884c2
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-1.toml
@@ -0,0 +1,7 @@
+[table-1]
+key1 = "some string"
+key2 = 123
+
+[table-2]
+key1 = "another string"
+key2 = 456
diff --git a/internal/toml-test/tests/valid/spec/table-2.json b/internal/toml-test/tests/valid/spec/table-2.json
new file mode 100644
index 00000000..afb74d59
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-2.json
@@ -0,0 +1,12 @@
+{
+  "dog": {
+    "tater.man": {
+      "type": {
+        "name": {
+          "type": "string",
+          "value": "pug"
+        }
+      }
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/table-2.toml b/internal/toml-test/tests/valid/spec/table-2.toml
new file mode 100644
index 00000000..32cbe792
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-2.toml
@@ -0,0 +1,2 @@
+[dog."tater.man"]
+type.name = "pug"
diff --git a/internal/toml-test/tests/valid/spec/table-3.json b/internal/toml-test/tests/valid/spec/table-3.json
new file mode 100644
index 00000000..0e40e3fd
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-3.json
@@ -0,0 +1,22 @@
+{
+  "a": {
+    "b": {
+      "c": {}
+    }
+  },
+  "d": {
+    "e": {
+      "f": {}
+    }
+  },
+  "g": {
+    "h": {
+      "i": {}
+    }
+  },
+  "j": {
+    "ʞ": {
+      "l": {}
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/table-3.toml b/internal/toml-test/tests/valid/spec/table-3.toml
new file mode 100644
index 00000000..0b10db3a
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-3.toml
@@ -0,0 +1,4 @@
+[a.b.c]            # this is best practice
+[ d.e.f ]          # same as [d.e.f]
+[ g .  h  . i ]    # same as [g.h.i]
+[ j . "ʞ" . 'l' ]  # same as [j."ʞ".'l']
diff --git a/internal/toml-test/tests/valid/spec/table-4.json b/internal/toml-test/tests/valid/spec/table-4.json
new file mode 100644
index 00000000..3c390c68
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-4.json
@@ -0,0 +1,9 @@
+{
+  "x": {
+    "y": {
+      "z": {
+        "w": {}
+      }
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/table-4.toml b/internal/toml-test/tests/valid/spec/table-4.toml
new file mode 100644
index 00000000..256e6c08
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-4.toml
@@ -0,0 +1,6 @@
+# [x] you
+# [x.y] don't
+# [x.y.z] need these
+[x.y.z.w] # for this to work
+
+[x] # defining a super-table afterward is ok
diff --git a/internal/toml-test/tests/valid/spec/table-5.json b/internal/toml-test/tests/valid/spec/table-5.json
new file mode 100644
index 00000000..2ec84071
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-5.json
@@ -0,0 +1,7 @@
+{
+  "animal": {},
+  "fruit": {
+    "apple": {},
+    "orange": {}
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/table-5.toml b/internal/toml-test/tests/valid/spec/table-5.toml
new file mode 100644
index 00000000..03fe3a3e
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-5.toml
@@ -0,0 +1,4 @@
+# VALID BUT DISCOURAGED
+[fruit.apple]
+[animal]
+[fruit.orange]
diff --git a/internal/toml-test/tests/valid/spec/table-6.json b/internal/toml-test/tests/valid/spec/table-6.json
new file mode 100644
index 00000000..2ec84071
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-6.json
@@ -0,0 +1,7 @@
+{
+  "animal": {},
+  "fruit": {
+    "apple": {},
+    "orange": {}
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/table-6.toml b/internal/toml-test/tests/valid/spec/table-6.toml
new file mode 100644
index 00000000..ef330e40
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-6.toml
@@ -0,0 +1,4 @@
+# RECOMMENDED
+[fruit.apple]
+[fruit.orange]
+[animal]
diff --git a/internal/toml-test/tests/valid/spec/table-7.json b/internal/toml-test/tests/valid/spec/table-7.json
new file mode 100644
index 00000000..3bdfe953
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-7.json
@@ -0,0 +1,20 @@
+{
+  "breed": {
+    "type": "string",
+    "value": "pug"
+  },
+  "name": {
+    "type": "string",
+    "value": "Fido"
+  },
+  "owner": {
+    "member_since": {
+      "type": "date-local",
+      "value": "1999-08-04"
+    },
+    "name": {
+      "type": "string",
+      "value": "Regina Dogman"
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/table-7.toml b/internal/toml-test/tests/valid/spec/table-7.toml
new file mode 100644
index 00000000..c57a2294
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-7.toml
@@ -0,0 +1,8 @@
+# Top-level table begins.
+name = "Fido"
+breed = "pug"
+
+# Top-level table ends.
+[owner]
+name = "Regina Dogman"
+member_since = 1999-08-04
diff --git a/internal/toml-test/tests/valid/spec/table-8.json b/internal/toml-test/tests/valid/spec/table-8.json
new file mode 100644
index 00000000..dd59a518
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-8.json
@@ -0,0 +1,16 @@
+{
+  "fruit": {
+    "apple": {
+      "color": {
+        "type": "string",
+        "value": "red"
+      },
+      "taste": {
+        "sweet": {
+          "type": "bool",
+          "value": "true"
+        }
+      }
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/table-8.toml b/internal/toml-test/tests/valid/spec/table-8.toml
new file mode 100644
index 00000000..d5a2c11f
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-8.toml
@@ -0,0 +1,7 @@
+fruit.apple.color = "red"
+# Defines a table named fruit
+# Defines a table named fruit.apple
+
+fruit.apple.taste.sweet = true
+# Defines a table named fruit.apple.taste
+# fruit and fruit.apple were already created
diff --git a/internal/toml-test/tests/valid/spec/table-9.json b/internal/toml-test/tests/valid/spec/table-9.json
new file mode 100644
index 00000000..89e8d5e5
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-9.json
@@ -0,0 +1,22 @@
+{
+  "fruit": {
+    "apple": {
+      "color": {
+        "type": "string",
+        "value": "red"
+      },
+      "taste": {
+        "sweet": {
+          "type": "bool",
+          "value": "true"
+        }
+      },
+      "texture": {
+        "smooth": {
+          "type": "bool",
+          "value": "true"
+        }
+      }
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/spec/table-9.toml b/internal/toml-test/tests/valid/spec/table-9.toml
new file mode 100644
index 00000000..ae2d65bb
--- /dev/null
+++ b/internal/toml-test/tests/valid/spec/table-9.toml
@@ -0,0 +1,9 @@
+[fruit]
+apple.color = "red"
+apple.taste.sweet = true
+
+# [fruit.apple]  # INVALID
+# [fruit.apple.taste]  # INVALID
+
+[fruit.apple.texture]  # you can add sub-tables
+smooth = true
diff --git a/internal/toml-test/tests/valid/string/quoted-unicode.json b/internal/toml-test/tests/valid/string/quoted-unicode.json
new file mode 100644
index 00000000..9c6cc955
--- /dev/null
+++ b/internal/toml-test/tests/valid/string/quoted-unicode.json
@@ -0,0 +1,18 @@
+{
+  "escaped_string": {
+    "type": "string",
+    "value": "\u0000 \b \f A \u007f \u0080 \u00ff \ud7ff \ue000 \uffff \ud800\udc00 \udbff\udfff"
+  },
+  "not_escaped_string": {
+    "type": "string",
+    "value": "\\u0000 \\u0008 \\u000c \\U00000041 \\u007f \\u0080 \\u00ff \\ud7ff \\ue000 \\uffff \\U00010000 \\U0010ffff"
+  },
+  "basic_string": {
+    "type": "string",
+    "value": "~ \u0080 \u00ff \ud7ff \ue000 \uffff \ud800\udc00 \udbff\udfff"
+  },
+  "literal_string": {
+    "type": "string",
+    "value": "~ \u0080 \u00ff \ud7ff \ue000 \uffff \ud800\udc00 \udbff\udfff"
+  }
+}
diff --git a/internal/toml-test/tests/valid/string/quoted-unicode.toml b/internal/toml-test/tests/valid/string/quoted-unicode.toml
new file mode 100644
index 00000000..3dfb1473
--- /dev/null
+++ b/internal/toml-test/tests/valid/string/quoted-unicode.toml
@@ -0,0 +1,6 @@
+
+escaped_string = "\u0000 \u0008 \u000c \U00000041 \u007f \u0080 \u00ff \ud7ff \ue000 \uffff \U00010000 \U0010ffff"
+not_escaped_string = '\u0000 \u0008 \u000c \U00000041 \u007f \u0080 \u00ff \ud7ff \ue000 \uffff \U00010000 \U0010ffff'
+
+basic_string = "~ € ÿ ퟿  ￿ 𐀀 􏿿"
+literal_string = '~ € ÿ ퟿  ￿ 𐀀 􏿿'
diff --git a/internal/toml-test/tests/valid/table/array-implicit-and-explicit-after.json b/internal/toml-test/tests/valid/table/array-implicit-and-explicit-after.json
new file mode 100644
index 00000000..de156c5b
--- /dev/null
+++ b/internal/toml-test/tests/valid/table/array-implicit-and-explicit-after.json
@@ -0,0 +1,16 @@
+{
+  "a": {
+    "b": [
+      {
+        "x": {
+          "type": "integer",
+          "value": "1"
+        }
+      }
+    ],
+    "y": {
+      "type": "integer",
+      "value": "2"
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/table/array-implicit-and-explicit-after.toml b/internal/toml-test/tests/valid/table/array-implicit-and-explicit-after.toml
new file mode 100644
index 00000000..bab8d619
--- /dev/null
+++ b/internal/toml-test/tests/valid/table/array-implicit-and-explicit-after.toml
@@ -0,0 +1,5 @@
+[[a.b]]
+x = 1
+
+[a]
+y = 2
diff --git a/internal/toml-test/tests/valid/table/array-within-dotted.json b/internal/toml-test/tests/valid/table/array-within-dotted.json
new file mode 100644
index 00000000..30b15173
--- /dev/null
+++ b/internal/toml-test/tests/valid/table/array-within-dotted.json
@@ -0,0 +1,18 @@
+{
+  "fruit": {
+    "apple": {
+      "color": {
+        "type": "string",
+        "value": "red"
+      },
+      "seeds": [
+        {
+          "size": {
+            "type": "integer",
+            "value": "2"
+          }
+        }
+      ]
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/table/array-within-dotted.toml b/internal/toml-test/tests/valid/table/array-within-dotted.toml
new file mode 100644
index 00000000..3ecbeb70
--- /dev/null
+++ b/internal/toml-test/tests/valid/table/array-within-dotted.toml
@@ -0,0 +1,5 @@
+[fruit]
+apple.color = "red"
+
+[[fruit.apple.seeds]]
+size = 2
diff --git a/internal/toml-test/tests/valid/table/empty-name.json b/internal/toml-test/tests/valid/table/empty-name.json
new file mode 100644
index 00000000..fc58e386
--- /dev/null
+++ b/internal/toml-test/tests/valid/table/empty-name.json
@@ -0,0 +1,22 @@
+{
+  "": {
+    "x": {
+      "type": "integer",
+      "value": "1"
+    },
+    "a": {
+      "x": {
+        "type": "integer",
+        "value": "2"
+      }
+    }
+  },
+  "a": {
+    "": {
+      "x": {
+        "type": "integer",
+        "value": "3"
+      }
+    }
+  }
+}
diff --git a/internal/toml-test/tests/valid/table/empty-name.toml b/internal/toml-test/tests/valid/table/empty-name.toml
new file mode 100644
index 00000000..3c98faac
--- /dev/null
+++ b/internal/toml-test/tests/valid/table/empty-name.toml
@@ -0,0 +1,8 @@
+['']
+x = 1
+
+["".a]
+x = 2
+
+[a.'']
+x = 3
diff --git a/toml_test.go b/toml_test.go
index 5e56c3ff..10c88b7c 100644
--- a/toml_test.go
+++ b/toml_test.go
@@ -313,14 +313,19 @@ func runTomlTest(t *testing.T, includeNext bool, wantFail ...string) {
 				// https://github.com/BurntSushi/toml/issues/320
 				"invalid/datetime/time-no-leads",
 
-				// This test is fine, just doesn't deal well with empty output.
+				// These tests are fine, just doesn't deal well with empty output.
 				"valid/comment/noeol",
+				"valid/comment/nonascii",
 
-				// TODO: fix this.
+				// TODO: fix this; we allow appending to tables, but shouldn't.
 				"invalid/table/append-with-dotted*",
 				"invalid/inline-table/add",
 				"invalid/table/duplicate-key-dotted-table",
 				"invalid/table/duplicate-key-dotted-table2",
+				"invalid/spec/inline-table-2-0",
+				"invalid/spec/table-9-1",
+				"invalid/inline-table/nested_key_conflict",
+				"invalid/table/append-to-array-with-dotted-keys",
 			},
 		}
 		if includeNext {