From dc925c462705af9e61357d038b6a3f869f1f3157 Mon Sep 17 00:00:00 2001
From: Abdullah Algarni <AlgarniAbdullah@outlook.com>
Date: Mon, 11 Feb 2019 17:39:04 +0300
Subject: [PATCH] Added a test for config checking

---
 codegen/config_test.go                      | 13 +++++++++++++
 codegen/testdata/cfg/conflictedPackages.yml | 10 ++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 codegen/testdata/cfg/conflictedPackages.yml

diff --git a/codegen/config_test.go b/codegen/config_test.go
index a97b9d20f56..09a20abf54d 100644
--- a/codegen/config_test.go
+++ b/codegen/config_test.go
@@ -79,3 +79,16 @@ func TestReferencedPackages(t *testing.T) {
 	})
 
 }
+
+func TestConfigCheck(t *testing.T) {
+	t.Run("invalid config format due to conflicting package names", func(t *testing.T) {
+		config, err := LoadConfig("testdata/cfg/conflictedPackages.yml")
+		require.NoError(t, err)
+
+		err = config.normalize()
+		require.NoError(t, err)
+
+		err = config.check()
+		require.EqualError(t, err, "filenames exec.go and models.go are in the same directory but have different package definitions")
+	})
+}
diff --git a/codegen/testdata/cfg/conflictedPackages.yml b/codegen/testdata/cfg/conflictedPackages.yml
new file mode 100644
index 00000000000..ec6ceea515a
--- /dev/null
+++ b/codegen/testdata/cfg/conflictedPackages.yml
@@ -0,0 +1,10 @@
+schema:
+  - schema.graphql
+exec:
+  filename: generated/exec.go
+  package: graphql
+model:
+  filename: generated/models.go
+resolver:
+  filename: generated/resolver.go
+  type: Resolver