Function TestGenericScaleSimple

pkg/scale/scale_test.go:516–623

TestGenericScaleSimple exercises GenericScaler.ScaleSimple method

(t *testing.T)

// TestGenericScaleSimple exercises GenericScaler.ScaleSimple method
func TestGenericScaleSimple(t *testing.T) {
	// test data
	scaleClient := createFakeScaleClient("deployments", "abc", 5, nil)
	// expected actions
	scaleClientExpectedAction := []string{"patch", "get", "update", "get", "update", "get", "get", "update", "get"}

	// test scenarios
	scenarios := []struct {
		name         string
		precondition *ScalePrecondition
		newSize      int
		targetGVR    schema.GroupVersionResource
		resName      string
		scaleGetter  scale.ScalesGetter
		expectError  bool
	}{
		// scenario 0: scale up the "abc" deployment without precondition
		{
			name:         "scale up the \"abc\" deployment without precondition",
			precondition: nil,
			newSize:      10,
			targetGVR:    deploygvr,
			resName:      "abc",
			scaleGetter:  scaleClient,
		},
		// scenario 1: scale up the "abc" deployment
		{
			name:         "scale up the \"abc\" deployment",
			precondition: &ScalePrecondition{10, ""},
			newSize:      20,
			targetGVR:    deploygvr,
			resName:      "abc",
			scaleGetter:  scaleClient,
		},
		// scenario 2: scale down the "abc" deployment
		{
			name:         "scale down the \"abs\" deployment",
			precondition: &ScalePrecondition{20, ""},
			newSize:      5,
			targetGVR:    deploygvr,
			resName:      "abc",
			scaleGetter:  scaleClient,
		},
		// scenario 3: precondition error, expected size is 1,
		// note that the previous scenario (2) set the size to 5
		{
			name:         "precondition error, expected size is 1",
			precondition: &ScalePrecondition{1, ""},
			newSize:      5,
			targetGVR:    deploygvr,
			resName:      "abc",
			scaleGetter:  scaleClient,
			expectError:  true,
		},
		// scenario 4: precondition is not validated when the precondition size is set to -1
		{
			name:         "precondition is not validated when the size is set to -1",
			precondition: &ScalePrecondition{-1, ""},