Merge pull request #226 from gottwald/TestYAMLPrinter

Add test for YAMLPrinter

pkg/cloudcfg/resource_printer_test.go

@@ -0,0 +1,65 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+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.
+*/
+
+package cloudcfg
+
+import (
+	"bytes"
+	"encoding/json"
+	"reflect"
+	"testing"
+
+	"gopkg.in/v1/yaml"
+)
+
+func TestYAMLPrinterPrint(t *testing.T) {
+	type testStruct struct {
+		Key        string         `yaml:"Key" json:"Key"`
+		Map        map[string]int `yaml:"Map" json:"Map"`
+		StringList []string       `yaml:"StringList" json:"StringList"`
+		IntList    []int          `yaml:"IntList" json:"IntList"`
+	}
+	testData := testStruct{
+		"testValue",
+		map[string]int{"TestSubkey": 1},
+		[]string{"a", "b", "c"},
+		[]int{1, 2, 3},
+	}
+	printer := &YAMLPrinter{}
+	buf := bytes.NewBuffer([]byte{})
+
+	err := printer.Print([]byte("invalidJSON"), buf)
+	if err == nil {
+		t.Error("Error: didn't fail on invalid JSON data")
+	}
+
+	jTestData, err := json.Marshal(&testData)
+	if err != nil {
+		t.Fatal("Unexpected error: couldn't marshal test data")
+	}
+	err = printer.Print(jTestData, buf)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var poutput testStruct
+	err = yaml.Unmarshal(buf.Bytes(), &poutput)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !reflect.DeepEqual(testData, poutput) {
+		t.Error("Test data and unmarshaled data are not equal")
+	}
+}