Add spec for String#unpack raising ArgumentError on unknown directive

ruby · Nov 25, 2024 · d26a4fb · d26a4fb
1 parent 8e0b9e5
commit d26a4fb
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/core/string/unpack/shared/basic.rb b/core/string/unpack/shared/basic.rb
@@ -8,6 +8,15 @@
     d.should_receive(:to_str).and_return("a"+unpack_format)
     "abc".unpack(d).should be_an_instance_of(Array)
   end
+
+  ruby_version_is "3.3" do
+    # https://bugs.ruby-lang.org/issues/19150
+    it 'raise ArgumentError when a directive is unknown' do
+      -> { "abcdefgh".unpack("a R" + unpack_format) }.should raise_error(ArgumentError)
+      -> { "abcdefgh".unpack("a 0" + unpack_format) }.should raise_error(ArgumentError)
+      -> { "abcdefgh".unpack("a :" + unpack_format) }.should raise_error(ArgumentError)
+    end
+  end
 end
 
 describe :string_unpack_no_platform, shared: true do