Add unit tests

internal/environment/aws_manager_test.go

@@ -0,0 +1,112 @@
+package environment
+
+import (
+	"github.com/openHPI/poseidon/internal/runner"
+	"github.com/openHPI/poseidon/pkg/dto"
+	"github.com/openHPI/poseidon/tests"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func TestAWSEnvironmentManager_CreateOrUpdate(t *testing.T) {
+	runnerManager := runner.NewAWSRunnerManager()
+	m := NewAWSEnvironmentManager(runnerManager)
+	uniqueImage := "random image string"
+
+	t.Run("can create default Java environment", func(t *testing.T) {
+		_, err := m.CreateOrUpdate(runner.AwsJavaEnvironmentID, dto.ExecutionEnvironmentRequest{Image: uniqueImage})
+		assert.NoError(t, err)
+	})
+
+	t.Run("can retrieve added environment", func(t *testing.T) {
+		environment, err := m.Get(runner.AwsJavaEnvironmentID, false)
+		assert.NoError(t, err)
+		assert.Equal(t, environment.Image(), uniqueImage)
+	})
+
+	t.Run("non handleable requests are forwarded to the next manager", func(t *testing.T) {
+		nextHandler := &ManagerHandlerMock{}
+		nextHandler.On("CreateOrUpdate", mock.AnythingOfType("dto.EnvironmentID"),
+			mock.AnythingOfType("dto.ExecutionEnvironmentRequest")).Return(true, nil)
+		m.SetNextHandler(nextHandler)
+
+		request := dto.ExecutionEnvironmentRequest{}
+		_, err := m.CreateOrUpdate(tests.DefaultEnvironmentIDAsInteger, request)
+		assert.NoError(t, err)
+		nextHandler.AssertCalled(t, "CreateOrUpdate",
+			dto.EnvironmentID(tests.DefaultEnvironmentIDAsInteger), request)
+	})
+}
+
+func TestAWSEnvironmentManager_Get(t *testing.T) {
+	runnerManager := runner.NewAWSRunnerManager()
+	m := NewAWSEnvironmentManager(runnerManager)
+
+	t.Run("Calls next handler when not found", func(t *testing.T) {
+		nextHandler := &ManagerHandlerMock{}
+		nextHandler.On("Get", mock.AnythingOfType("dto.EnvironmentID"), mock.AnythingOfType("bool")).
+			Return(nil, nil)
+		m.SetNextHandler(nextHandler)
+
+		_, err := m.Get(tests.DefaultEnvironmentIDAsInteger, false)
+		assert.NoError(t, err)
+		nextHandler.AssertCalled(t, "Get", dto.EnvironmentID(tests.DefaultEnvironmentIDAsInteger), false)
+	})
+
+	t.Run("Returns error when not found", func(t *testing.T) {
+		nextHandler := &AbstractManager{nil}
+		m.SetNextHandler(nextHandler)
+
+		_, err := m.Get(tests.DefaultEnvironmentIDAsInteger, false)
+		assert.ErrorIs(t, err, runner.ErrRunnerNotFound)
+	})
+
+	t.Run("Returns environment when it was added before", func(t *testing.T) {
+		expectedEnvironment := NewAWSEnvironment()
+		expectedEnvironment.SetID(tests.DefaultEnvironmentIDAsInteger)
+		runnerManager.StoreEnvironment(expectedEnvironment)
+
+		environment, err := m.Get(tests.DefaultEnvironmentIDAsInteger, false)
+		assert.NoError(t, err)
+		assert.Equal(t, expectedEnvironment, environment)
+	})
+}
+
+func TestAWSEnvironmentManager_List(t *testing.T) {
+	runnerManager := runner.NewAWSRunnerManager()
+	m := NewAWSEnvironmentManager(runnerManager)
+
+	t.Run("contains the \"Load\"-ed environments", func(t *testing.T) {
+		environments, err := m.List(false)
+		assert.NoError(t, err)
+		require.Len(t, environments, 1)
+		assert.Equal(t, environments[0].ID(), dto.EnvironmentID(runner.AwsJavaEnvironmentID))
+	})
+
+	t.Run("returs also environments of the rest of the manager chain", func(t *testing.T) {
+		nextHandler := &ManagerHandlerMock{}
+		existingEnvironment := NewAWSEnvironment()
+		nextHandler.On("List", mock.AnythingOfType("bool")).
+			Return([]runner.ExecutionEnvironment{existingEnvironment}, nil)
+		m.SetNextHandler(nextHandler)
+
+		environments, err := m.List(false)
+		assert.NoError(t, err)
+		require.Len(t, environments, 2)
+		assert.Contains(t, environments, existingEnvironment)
+	})
+	m.SetNextHandler(nil)
+
+	t.Run("Returns added environment", func(t *testing.T) {
+		localEnvironment := NewAWSEnvironment()
+		localEnvironment.SetID(tests.DefaultEnvironmentIDAsInteger)
+		runnerManager.StoreEnvironment(localEnvironment)
+
+		environments, err := m.List(false)
+		assert.NoError(t, err)
+		assert.Len(t, environments, 2)
+		assert.Contains(t, environments, localEnvironment)
+	})
+}