kyaml: initial support for yaml and resource manipulation

kyaml/yaml/merge3/merge3_test.go

@@ -0,0 +1,47 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package merge3_test
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	. "sigs.k8s.io/kustomize/kyaml/yaml/merge3"
+)
+
+var testCases = [][]testCase{scalarTestCases, listTestCases, mapTestCases, elementTestCases}
+
+func TestMerge(t *testing.T) {
+	for i := range testCases {
+		for _, tc := range testCases[i] {
+			actual, err := MergeStrings(tc.local, tc.origin, tc.update)
+			if tc.err == nil {
+				if !assert.NoError(t, err, tc.description) {
+					t.FailNow()
+				}
+				if !assert.Equal(t,
+					strings.TrimSpace(tc.expected), strings.TrimSpace(actual), tc.description) {
+					t.FailNow()
+				}
+			} else {
+				if !assert.Errorf(t, err, tc.description) {
+					t.FailNow()
+				}
+				if !assert.Contains(t, tc.err.Error(), err.Error()) {
+					t.FailNow()
+				}
+			}
+		}
+	}
+}
+
+type testCase struct {
+	description string
+	origin      string
+	update      string
+	local       string
+	expected    string
+	err         error
+}