Use structs for container validation test

This introduces no changes to unit tests other than to switch from
map-based to struct-based tables in TestValidateContainers and
TestValidateInitContainers in order to make diffs for later commits
easier to read.

pkg/apis/core/validation/validation_test.go

@@ -7169,30 +7169,62 @@ func TestValidateContainers(t *testing.T) {
 	capabilities.SetForTests(capabilities.Capabilities{
 		AllowPrivileged: false,
 	})
-	errorCases := map[string][]core.Container{
-		"zero-length name":     {{Name: "", Image: "image", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"}},
-		"zero-length-image":    {{Name: "abc", Image: "", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"}},
-		"name > 63 characters": {{Name: strings.Repeat("a", 64), Image: "image", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"}},
-		"name not a DNS label": {{Name: "a.b.c", Image: "image", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"}},
-		"name not unique": {
+	errorCases := []struct {
+		title      string
+		containers []core.Container
+	}{
+		{
+			"zero-length name",
+			[]core.Container{{Name: "", Image: "image", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"}},
+		},
+		{
+			"zero-length-image",
+			[]core.Container{{Name: "abc", Image: "", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"}},
+		},
+		{
+			"name > 63 characters",
+			[]core.Container{{Name: strings.Repeat("a", 64), Image: "image", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"}},
+		},
+		{
+			"name not a DNS label",
+			[]core.Container{{Name: "a.b.c", Image: "image", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"}},
+		},
+		{
+			"name not unique",
+			[]core.Container{
 				{Name: "abc", Image: "image", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"},
 				{Name: "abc", Image: "image", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"},
 			},
-		"zero-length image": {{Name: "abc", Image: "", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"}},
-		"host port not unique": {
+		},
+		{
+			"zero-length image",
+			[]core.Container{{Name: "abc", Image: "", ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"}},
+		},
+		{
+			"host port not unique",
+			[]core.Container{
 				{Name: "abc", Image: "image", Ports: []core.ContainerPort{{ContainerPort: 80, HostPort: 80, Protocol: "TCP"}},
 					ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"},
 				{Name: "def", Image: "image", Ports: []core.ContainerPort{{ContainerPort: 81, HostPort: 80, Protocol: "TCP"}},
 					ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"},
 			},
-		"invalid env var name": {
+		},
+		{
+			"invalid env var name",
+			[]core.Container{
 				{Name: "abc", Image: "image", Env: []core.EnvVar{{Name: "ev!1"}}, ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"},
 			},
-		"unknown volume name": {
+		},
+		{
+			"unknown volume name",
+			[]core.Container{
 				{Name: "abc", Image: "image", VolumeMounts: []core.VolumeMount{{Name: "anything", MountPath: "/foo"}},
 					ImagePullPolicy: "IfNotPresent", TerminationMessagePolicy: "File"},
 			},
-		"invalid lifecycle, no exec command.": {
+		},
+		{
+			"invalid lifecycle, no exec command.",
+			[]core.Container{
 				{
 					Name:  "life-123",
 					Image: "image",
@@ -7205,7 +7237,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"invalid lifecycle, no http path.": {
+		},
+		{
+			"invalid lifecycle, no http path.",
+			[]core.Container{
 				{
 					Name:  "life-123",
 					Image: "image",
@@ -7218,7 +7253,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"invalid lifecycle, no tcp socket port.": {
+		},
+		{
+			"invalid lifecycle, no tcp socket port.",
+			[]core.Container{
 				{
 					Name:  "life-123",
 					Image: "image",
@@ -7231,7 +7269,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"invalid lifecycle, zero tcp socket port.": {
+		},
+		{
+			"invalid lifecycle, zero tcp socket port.",
+			[]core.Container{
 				{
 					Name:  "life-123",
 					Image: "image",
@@ -7246,7 +7287,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"invalid lifecycle, no action.": {
+		},
+		{
+			"invalid lifecycle, no action.",
+			[]core.Container{
 				{
 					Name:  "life-123",
 					Image: "image",
@@ -7257,7 +7301,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"invalid readiness probe, terminationGracePeriodSeconds set.": {
+		},
+		{
+			"invalid readiness probe, terminationGracePeriodSeconds set.",
+			[]core.Container{
 				{
 					Name:  "life-123",
 					Image: "image",
@@ -7271,7 +7318,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"invalid liveness probe, no tcp socket port.": {
+		},
+		{
+			"invalid liveness probe, no tcp socket port.",
+			[]core.Container{
 				{
 					Name:  "life-123",
 					Image: "image",
@@ -7284,7 +7334,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"invalid liveness probe, no action.": {
+		},
+		{
+			"invalid liveness probe, no action.",
+			[]core.Container{
 				{
 					Name:  "life-123",
 					Image: "image",
@@ -7295,7 +7348,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"invalid message termination policy": {
+		},
+		{
+			"invalid message termination policy",
+			[]core.Container{
 				{
 					Name:                     "life-123",
 					Image:                    "image",
@@ -7303,7 +7359,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "Unknown",
 				},
 			},
-		"empty message termination policy": {
+		},
+		{
+			"empty message termination policy",
+			[]core.Container{
 				{
 					Name:                     "life-123",
 					Image:                    "image",
@@ -7311,10 +7370,16 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "",
 				},
 			},
-		"privilege disabled": {
+		},
+		{
+			"privilege disabled",
+			[]core.Container{
 				{Name: "abc", Image: "image", SecurityContext: fakeValidSecurityContext(true)},
 			},
-		"invalid compute resource": {
+		},
+		{
+			"invalid compute resource",
+			[]core.Container{
 				{
 					Name:  "abc-123",
 					Image: "image",
@@ -7327,7 +7392,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"Resource CPU invalid": {
+		},
+		{
+			"Resource CPU invalid",
+			[]core.Container{
 				{
 					Name:  "abc-123",
 					Image: "image",
@@ -7338,7 +7406,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"Resource Requests CPU invalid": {
+		},
+		{
+			"Resource Requests CPU invalid",
+			[]core.Container{
 				{
 					Name:  "abc-123",
 					Image: "image",
@@ -7349,7 +7420,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"Resource Memory invalid": {
+		},
+		{
+			"Resource Memory invalid",
+			[]core.Container{
 				{
 					Name:  "abc-123",
 					Image: "image",
@@ -7360,7 +7434,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"Request limit simple invalid": {
+		},
+		{
+			"Request limit simple invalid",
+			[]core.Container{
 				{
 					Name:  "abc-123",
 					Image: "image",
@@ -7372,7 +7449,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"Invalid storage limit request": {
+		},
+		{
+			"Invalid storage limit request",
+			[]core.Container{
 				{
 					Name:  "abc-123",
 					Image: "image",
@@ -7385,7 +7465,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"Request limit multiple invalid": {
+		},
+		{
+			"Request limit multiple invalid",
+			[]core.Container{
 				{
 					Name:  "abc-123",
 					Image: "image",
@@ -7397,7 +7480,10 @@ func TestValidateContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
-		"Invalid env from": {
+		},
+		{
+			"Invalid env from",
+			[]core.Container{
 				{
 					Name:                     "env-from-source",
 					Image:                    "image",
@@ -7414,10 +7500,11 @@ func TestValidateContainers(t *testing.T) {
 					},
 				},
 			},
+		},
 	}
-	for k, v := range errorCases {
-		if errs := validateContainers(v, false, volumeDevices, field.NewPath("field"), PodValidationOptions{}); len(errs) == 0 {
-			t.Errorf("expected failure for %s", k)
+	for _, tc := range errorCases {
+		if errs := validateContainers(tc.containers, false, volumeDevices, field.NewPath("field"), PodValidationOptions{}); len(errs) == 0 {
+			t.Errorf("expected failure for %s", tc.title)
 		}
 	}
 }
@@ -7457,8 +7544,13 @@ func TestValidateInitContainers(t *testing.T) {
 	capabilities.SetForTests(capabilities.Capabilities{
 		AllowPrivileged: false,
 	})
-	errorCases := map[string][]core.Container{
-		"duplicate ports": {
+	errorCases := []struct {
+		title          string
+		initContainers []core.Container
+	}{
+		{
+			"duplicate ports",
+			[]core.Container{
 				{
 					Name:  "abc",
 					Image: "image",
@@ -7474,10 +7566,11 @@ func TestValidateInitContainers(t *testing.T) {
 					TerminationMessagePolicy: "File",
 				},
 			},
+		},
 	}
-	for k, v := range errorCases {
-		if errs := validateContainers(v, true, volumeDevices, field.NewPath("field"), PodValidationOptions{}); len(errs) == 0 {
-			t.Errorf("expected failure for %s", k)
+	for _, tc := range errorCases {
+		if errs := validateContainers(tc.initContainers, true, volumeDevices, field.NewPath("field"), PodValidationOptions{}); len(errs) == 0 {
+			t.Errorf("expected failure for %s", tc.title)
 		}
 	}
 }