kubernetes/pkg/registry/task_registry_test.go

/*
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 registry

import (
	"encoding/json"
	"fmt"
	"testing"

	. "github.com/GoogleCloudPlatform/kubernetes/pkg/api"
)

type MockTaskRegistry struct {
	err   error
	tasks []Pod
}

func expectNoError(t *testing.T, err error) {
	if err != nil {
		t.Errorf("Unexpected error: %#v", err)
	}
}

func (registry *MockTaskRegistry) ListTasks(*map[string]string) ([]Pod, error) {
	return registry.tasks, registry.err
}

func (registry *MockTaskRegistry) GetTask(taskId string) (*Pod, error) {
	return &Pod{}, registry.err
}

func (registry *MockTaskRegistry) CreateTask(machine string, task Pod) error {
	return registry.err
}

func (registry *MockTaskRegistry) UpdateTask(task Pod) error {
	return registry.err
}
func (registry *MockTaskRegistry) DeleteTask(taskId string) error {
	return registry.err
}

func TestListTasksError(t *testing.T) {
	mockRegistry := MockTaskRegistry{
		err: fmt.Errorf("Test Error"),
	}
	storage := TaskRegistryStorage{
		registry: &mockRegistry,
	}
	tasks, err := storage.List(nil)
	if err != mockRegistry.err {
		t.Errorf("Expected %#v, Got %#v", mockRegistry.err, err)
	}
	if len(tasks.(TaskList).Items) != 0 {
		t.Errorf("Unexpected non-zero task list: %#v", tasks)
	}
}

func TestListEmptyTaskList(t *testing.T) {
	mockRegistry := MockTaskRegistry{}
	storage := TaskRegistryStorage{
		registry: &mockRegistry,
	}
	tasks, err := storage.List(nil)
	expectNoError(t, err)
	if len(tasks.(TaskList).Items) != 0 {
		t.Errorf("Unexpected non-zero task list: %#v", tasks)
	}
}

func TestListTaskList(t *testing.T) {
	mockRegistry := MockTaskRegistry{
		tasks: []Pod{
			Pod{
				JSONBase: JSONBase{
					ID: "foo",
				},
			},
			Pod{
				JSONBase: JSONBase{
					ID: "bar",
				},
			},
		},
	}
	storage := TaskRegistryStorage{
		registry: &mockRegistry,
	}
	tasksObj, err := storage.List(nil)
	tasks := tasksObj.(TaskList)
	expectNoError(t, err)
	if len(tasks.Items) != 2 {
		t.Errorf("Unexpected task list: %#v", tasks)
	}
	if tasks.Items[0].ID != "foo" {
		t.Errorf("Unexpected task: %#v", tasks.Items[0])
	}
	if tasks.Items[1].ID != "bar" {
		t.Errorf("Unexpected task: %#v", tasks.Items[1])
	}
}

func TestExtractJson(t *testing.T) {
	mockRegistry := MockTaskRegistry{}
	storage := TaskRegistryStorage{
		registry: &mockRegistry,
	}
	task := Pod{
		JSONBase: JSONBase{
			ID: "foo",
		},
	}
	body, err := json.Marshal(task)
	expectNoError(t, err)
	taskOut, err := storage.Extract(string(body))
	expectNoError(t, err)
	jsonOut, err := json.Marshal(taskOut)
	expectNoError(t, err)
	if string(body) != string(jsonOut) {
		t.Errorf("Expected %#v, found %#v", task, taskOut)
	}
}

func expectLabelMatch(t *testing.T, task Pod, key, value string) {
	if !LabelMatch(task, key, value) {
		t.Errorf("Unexpected match failure: %#v %s %s", task, key, value)
	}
}

func expectNoLabelMatch(t *testing.T, task Pod, key, value string) {
	if LabelMatch(task, key, value) {
		t.Errorf("Unexpected match success: %#v %s %s", task, key, value)
	}
}

func expectLabelsMatch(t *testing.T, task Pod, query *map[string]string) {
	if !LabelsMatch(task, query) {
		t.Errorf("Unexpected match failure: %#v %#v", task, *query)
	}
}

func expectNoLabelsMatch(t *testing.T, task Pod, query *map[string]string) {
	if LabelsMatch(task, query) {
		t.Errorf("Unexpected match success: %#v %#v", task, *query)
	}
}

func TestLabelMatch(t *testing.T) {
	task := Pod{
		Labels: map[string]string{
			"foo": "bar",
			"baz": "blah",
		},
	}
	expectLabelMatch(t, task, "foo", "bar")
	expectLabelMatch(t, task, "baz", "blah")
	expectNoLabelMatch(t, task, "foo", "blah")
	expectNoLabelMatch(t, task, "baz", "bar")
}

func TestLabelsMatch(t *testing.T) {
	task := Pod{
		Labels: map[string]string{
			"foo": "bar",
			"baz": "blah",
		},
	}
	expectLabelsMatch(t, task, &map[string]string{})
	expectLabelsMatch(t, task, &map[string]string{
		"foo": "bar",
	})
	expectLabelsMatch(t, task, &map[string]string{
		"baz": "blah",
	})
	expectLabelsMatch(t, task, &map[string]string{
		"foo": "bar",
		"baz": "blah",
	})
	expectNoLabelsMatch(t, task, &map[string]string{
		"foo": "blah",
	})
	expectNoLabelsMatch(t, task, &map[string]string{
		"baz": "bar",
	})
	expectNoLabelsMatch(t, task, &map[string]string{
		"foo":    "bar",
		"foobar": "bar",
		"baz":    "blah",
	})

}