// Copyright Istio Authors
//
// 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 yml

import (
	"testing"
)

func TestApplyNamespace(t *testing.T) {
	cases := []struct {
		name      string
		yml       string
		namespace string
		expected  string
	}{
		{
			"no namespace",
			`metadata:
  name: foo`,
			"default",
			`metadata:
  name: foo
  namespace: default`,
		},
		{
			"empty namespace",
			`metadata:
  name: foo
  namespace: ""`,
			"default",
			`metadata:
  name: foo
  namespace: default`,
		},
		{
			"existing namespace",
			`metadata:
  name: foo
  namespace: bar`,
			"default",
			`metadata:
  name: foo
  namespace: bar`,
		},
		{
			"multipart",
			`apiVersion: v1
metadata:
  name: foo
---
apiVersion: v1
metadata:
  name: bar
`,
			"default",
			`apiVersion: v1
metadata:
  name: foo
  namespace: default
---
apiVersion: v1
metadata:
  name: bar
  namespace: default`,
		},
	}
	for _, tt := range cases {
		t.Run(tt.name, func(t *testing.T) {
			got, err := ApplyNamespace(tt.yml, tt.namespace)
			if err != nil {
				t.Fatal(err)
			}
			if got != tt.expected {
				t.Fatalf("expected '%s', got '%s'", tt.expected, got)
			}
		})
	}
}
