/*
Copyright 2014 The Kubernetes 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 versioned

import (
	"reflect"
	"testing"

	"k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)

func TestGeneratePod(t *testing.T) {
	tests := []struct {
		name      string
		params    map[string]interface{}
		expected  *v1.Pod
		expectErr bool
	}{
		{
			name: "test1",
			params: map[string]interface{}{
				"name":  "foo",
				"image": "someimage",
				"port":  "",
			},
			expected: &v1.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:   "foo",
					Labels: map[string]string{"run": "foo"},
				},
				Spec: v1.PodSpec{
					Containers: []v1.Container{
						{
							Name:  "foo",
							Image: "someimage",
						},
					},
					DNSPolicy:     v1.DNSClusterFirst,
					RestartPolicy: v1.RestartPolicyAlways,
				},
			},
		},
		{
			name: "test2",
			params: map[string]interface{}{
				"name":  "foo",
				"image": "someimage",
				"env":   []string{"a", "c"},
			},

			expected:  nil,
			expectErr: true,
		},
		{
			name: "test3",
			params: map[string]interface{}{
				"name":              "foo",
				"image":             "someimage",
				"image-pull-policy": "Always",
				"env":               []string{"a=b", "c=d"},
			},
			expected: &v1.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:   "foo",
					Labels: map[string]string{"run": "foo"},
				},
				Spec: v1.PodSpec{
					Containers: []v1.Container{
						{
							Name:            "foo",
							Image:           "someimage",
							ImagePullPolicy: v1.PullAlways,
							Env: []v1.EnvVar{
								{
									Name:  "a",
									Value: "b",
								},
								{
									Name:  "c",
									Value: "d",
								},
							},
						},
					},
					DNSPolicy:     v1.DNSClusterFirst,
					RestartPolicy: v1.RestartPolicyAlways,
				},
			},
		},
		{
			name: "test4",
			params: map[string]interface{}{
				"name":  "foo",
				"image": "someimage",
				"port":  "80",
			},
			expected: &v1.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:   "foo",
					Labels: map[string]string{"run": "foo"},
				},
				Spec: v1.PodSpec{
					Containers: []v1.Container{
						{
							Name:  "foo",
							Image: "someimage",
							Ports: []v1.ContainerPort{
								{
									ContainerPort: 80,
								},
							},
						},
					},
					DNSPolicy:     v1.DNSClusterFirst,
					RestartPolicy: v1.RestartPolicyAlways,
				},
			},
		},
		{
			name: "test5",
			params: map[string]interface{}{
				"name":     "foo",
				"image":    "someimage",
				"port":     "80",
				"hostport": "80",
			},
			expected: &v1.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:   "foo",
					Labels: map[string]string{"run": "foo"},
				},
				Spec: v1.PodSpec{
					Containers: []v1.Container{
						{
							Name:  "foo",
							Image: "someimage",
							Ports: []v1.ContainerPort{
								{
									ContainerPort: 80,
									HostPort:      80,
								},
							},
						},
					},
					DNSPolicy:     v1.DNSClusterFirst,
					RestartPolicy: v1.RestartPolicyAlways,
				},
			},
		},
		{
			name: "test6",
			params: map[string]interface{}{
				"name":     "foo",
				"image":    "someimage",
				"hostport": "80",
			},
			expected:  nil,
			expectErr: true,
		},
		{
			name: "test7",
			params: map[string]interface{}{
				"name":     "foo",
				"image":    "someimage",
				"replicas": "1",
				"labels":   "foo=bar,baz=blah",
			},
			expected: &v1.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:   "foo",
					Labels: map[string]string{"foo": "bar", "baz": "blah"},
				},
				Spec: v1.PodSpec{
					Containers: []v1.Container{
						{
							Name:  "foo",
							Image: "someimage",
						},
					},
					DNSPolicy:     v1.DNSClusterFirst,
					RestartPolicy: v1.RestartPolicyAlways,
				},
			},
		},
		{
			name: "test8",
			params: map[string]interface{}{
				"name":     "foo",
				"image":    "someimage",
				"replicas": "1",
				"labels":   "foo=bar,baz=blah",
				"stdin":    "true",
			},
			expected: &v1.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:   "foo",
					Labels: map[string]string{"foo": "bar", "baz": "blah"},
				},
				Spec: v1.PodSpec{
					Containers: []v1.Container{
						{
							Name:      "foo",
							Image:     "someimage",
							Stdin:     true,
							StdinOnce: true,
						},
					},
					DNSPolicy:     v1.DNSClusterFirst,
					RestartPolicy: v1.RestartPolicyAlways,
				},
			},
		},
		{
			name: "test9",
			params: map[string]interface{}{
				"name":             "foo",
				"image":            "someimage",
				"replicas":         "1",
				"labels":           "foo=bar,baz=blah",
				"stdin":            "true",
				"leave-stdin-open": "true",
			},
			expected: &v1.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:   "foo",
					Labels: map[string]string{"foo": "bar", "baz": "blah"},
				},
				Spec: v1.PodSpec{
					Containers: []v1.Container{
						{
							Name:      "foo",
							Image:     "someimage",
							Stdin:     true,
							StdinOnce: false,
						},
					},
					DNSPolicy:     v1.DNSClusterFirst,
					RestartPolicy: v1.RestartPolicyAlways,
				},
			},
		},
		{
			name: "test10: privileged mode",
			params: map[string]interface{}{
				"name":       "foo",
				"image":      "someimage",
				"replicas":   "1",
				"privileged": "true",
			},
			expected: &v1.Pod{
				ObjectMeta: metav1.ObjectMeta{
					Name:   "foo",
					Labels: map[string]string{"run": "foo"},
				},
				Spec: v1.PodSpec{
					Containers: []v1.Container{
						{
							Name:            "foo",
							Image:           "someimage",
							SecurityContext: securityContextWithPrivilege(true),
						},
					},
					DNSPolicy:     v1.DNSClusterFirst,
					RestartPolicy: v1.RestartPolicyAlways,
				},
			},
		},
	}
	generator := BasicPod{}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			obj, err := generator.Generate(tt.params)
			if !tt.expectErr && err != nil {
				t.Errorf("unexpected error: %v", err)
			}
			if tt.expectErr && err != nil {
				return
			}
			if !reflect.DeepEqual(obj.(*v1.Pod), tt.expected) {
				t.Errorf("\nexpected:\n%#v\nsaw:\n%#v", tt.expected, obj.(*v1.Pod))
			}
		})
	}
}

func TestParseEnv(t *testing.T) {
	tests := []struct {
		name      string
		envArray  []string
		expected  []v1.EnvVar
		expectErr bool
		test      string
	}{
		{
			name: "test1",
			envArray: []string{
				"THIS_ENV=isOK",
				"this.dotted.env=isOKToo",
				"HAS_COMMAS=foo,bar",
				"HAS_EQUALS=jJnro54iUu75xNy==",
			},
			expected: []v1.EnvVar{
				{
					Name:  "THIS_ENV",
					Value: "isOK",
				},
				{
					Name:  "this.dotted.env",
					Value: "isOKToo",
				},
				{
					Name:  "HAS_COMMAS",
					Value: "foo,bar",
				},
				{
					Name:  "HAS_EQUALS",
					Value: "jJnro54iUu75xNy==",
				},
			},
			expectErr: false,
			test:      "test case 1",
		},
		{
			name: "test2",
			envArray: []string{
				"WITH_OUT_EQUALS",
			},
			expected:  []v1.EnvVar{},
			expectErr: true,
			test:      "test case 2",
		},
		{
			name: "test3",
			envArray: []string{
				"WITH_OUT_VALUES=",
			},
			expected: []v1.EnvVar{
				{
					Name:  "WITH_OUT_VALUES",
					Value: "",
				},
			},
			expectErr: false,
			test:      "test case 3",
		},
		{
			name: "test4",
			envArray: []string{
				"=WITH_OUT_NAME",
			},
			expected:  []v1.EnvVar{},
			expectErr: true,
			test:      "test case 4",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			envs, err := parseEnvs(tt.envArray)
			if !tt.expectErr && err != nil {
				t.Errorf("unexpected error: %v (%s)", err, tt.test)
			}
			if tt.expectErr && err != nil {
				return
			}
			if !reflect.DeepEqual(envs, tt.expected) {
				t.Errorf("\nexpected:\n%#v\nsaw:\n%#v (%s)", tt.expected, envs, tt.test)
			}
		})
	}
}

func securityContextWithPrivilege(privileged bool) *v1.SecurityContext {
	return &v1.SecurityContext{
		Privileged: &privileged,
	}
}
