util: Add test coverage for JSON/YAML utilities

internal/util/jsonyamlutils_test.go

@@ -0,0 +1,135 @@
+//
+// Copyright 2023 Stacklok, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// NOTE: This file is for stubbing out client code for proof of concept
+// purposes. It will / should be removed in the future.
+// Until then, it is not covered by unit tests and should not be used
+// It does make a good example of how to use the generated client code
+// for others to use as a reference.
+
+package util_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/stacklok/mediator/internal/util"
+)
+
+func TestConvertYAMLToJSON(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name     string
+		yamlCase string
+		wantW    string
+		wantErr  bool
+	}{
+		{
+			name:     "simple yaml",
+			yamlCase: "foo: bar",
+			wantW:    "{\"foo\":\"bar\"}\n",
+			wantErr:  false,
+		},
+		{
+			name: "complex yaml",
+			yamlCase: `---
+foo: bar
+bar:
+  - foo
+  - bar
+  - baz
+`,
+			wantW:   "{\"bar\":[\"foo\",\"bar\",\"baz\"],\"foo\":\"bar\"}\n",
+			wantErr: false,
+		},
+		{
+			name:     "invalid yaml",
+			yamlCase: "\tThis is invalid yaml",
+			wantW:    "",
+			wantErr:  true,
+		},
+	}
+	for _, tt := range tests {
+		tt := tt
+
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+
+			got, err := util.ConvertYamlToJson(tt.yamlCase)
+
+			if tt.wantErr {
+				assert.Error(t, err, "expected error")
+				return
+			}
+
+			assert.NoError(t, err, "unexpected error")
+			assert.Equal(t, tt.wantW, string(got), "unexpected output")
+		})
+	}
+}
+
+func TestConvertJSONToYAML(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name     string
+		jsonCase string
+		wantW    string
+		wantErr  bool
+	}{
+		{
+			name:     "simple yaml",
+			jsonCase: "{\"foo\":\"bar\"}\n",
+			wantW:    "foo: bar\n",
+			wantErr:  false,
+		},
+		{
+			name:     "complex yaml",
+			jsonCase: "{\"bar\":[\"foo\",\"bar\",\"baz\"],\"foo\":\"bar\"}\n",
+			wantW: `bar:
+    - foo
+    - bar
+    - baz
+foo: bar
+`,
+			wantErr: false,
+		},
+		{
+			name:     "invalid yaml",
+			jsonCase: "This is invalid JSON",
+			wantW:    "",
+			wantErr:  true,
+		},
+	}
+	for _, tt := range tests {
+		tt := tt
+
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+
+			got, err := util.ConvertJsonToYaml([]byte(tt.jsonCase))
+
+			if tt.wantErr {
+				assert.Error(t, err, "expected error")
+				return
+			}
+
+			assert.NoError(t, err, "unexpected error")
+			assert.Equal(t, tt.wantW, string(got), "unexpected output")
+		})
+	}
+}