Improving VHO tests in an attempt to investigate a bug

changelog/v1.18.0-rc3/vho-test-hardening.yaml

@@ -0,0 +1,8 @@
+changelog:
+  - type: NON_USER_FACING
+    description: |
+      Strengthed VHO kubernetes/e2e tests. Addressed issue with checking for `content-length` 
+      header in response containing `transfer-encoding: chunked` header.
+      Added to confirm previously conflicting VHO being accepted after blocker is deleted.
+    issueLink: https://github.com/k8sgateway/k8sgateway/issues/10310
+    resolvesIssue: false

test/kubernetes/e2e/features/virtualhost_options/testdata/setup.yaml

@@ -18,6 +18,23 @@ spec:
         namespaces:
           from: Same
 ---
+apiVersion: gateway.solo.io/v1
+kind: RouteOption
+metadata:
+  name: header-manipulation
+spec:
+  options:
+    headerManipulation:
+      responseHeadersToAdd:
+        - header:
+            key: "x-bar"
+            value: "bar"
+          append: false 
+        - header:
+            key: "x-baz"
+            value: "baz"
+          append: false
+---
 apiVersion: gateway.networking.k8s.io/v1
 kind: HTTPRoute
 metadata:
@@ -28,7 +45,13 @@ spec:
   hostnames:
     - "example.com"
   rules:
-    - backendRefs:
+    - filters:
+        - type: ExtensionRef
+          extensionRef:
+            group: gateway.solo.io
+            kind: RouteOption
+            name: header-manipulation
+      backendRefs:
         - name: example-svc
           port: 8080
 ---

test/kubernetes/e2e/features/virtualhost_options/testdata/extra-vho-merge.yaml → test/kubernetes/e2e/features/virtualhost_options/testdata/vho-merge-remove-x-baz.yaml

@@ -1,7 +1,7 @@
 apiVersion: gateway.solo.io/v1
 kind: VirtualHostOption
 metadata:
-  name: extra-vho-merge
+  name: remove-x-baz-merge
 spec:
   targetRefs:
   - group: gateway.networking.k8s.io
@@ -10,5 +10,5 @@ spec:
   options:
     headerManipulation:
       responseHeadersToRemove:
-        - "content-type"
+        - "x-baz"
     includeAttemptCountInResponse: true

test/kubernetes/e2e/features/virtualhost_options/testdata/extra-vho.yaml → test/kubernetes/e2e/features/virtualhost_options/testdata/vho-remove-x-bar.yaml

@@ -1,7 +1,7 @@
 apiVersion: gateway.solo.io/v1
 kind: VirtualHostOption
 metadata:
-  name: remove-content-type
+  name: remove-x-bar-header
 spec:
   targetRefs:
   - group: gateway.networking.k8s.io
@@ -10,4 +10,4 @@ spec:
   options:
     headerManipulation:
       responseHeadersToRemove:
-        - "content-type"
+        - "x-bar"

test/kubernetes/e2e/features/virtualhost_options/testdata/basic-vho.yaml → test/kubernetes/e2e/features/virtualhost_options/testdata/vho-remove-x-baz.yaml

@@ -1,7 +1,7 @@
 apiVersion: gateway.solo.io/v1
 kind: VirtualHostOption
 metadata:
-  name: remove-content-length
+  name: remove-x-baz-header
 spec:
   targetRefs:
   - group: gateway.networking.k8s.io
@@ -10,4 +10,4 @@ spec:
   options:
     headerManipulation:
       responseHeadersToRemove:
-        - "content-length"
+        - "x-baz"

test/kubernetes/e2e/features/virtualhost_options/testdata/section-name-vho.yaml → test/kubernetes/e2e/features/virtualhost_options/testdata/vho-section-add-x-foo.yaml

@@ -1,7 +1,7 @@
 apiVersion: gateway.solo.io/v1
 kind: VirtualHostOption
 metadata:
-  name: add-foo-header
+  name: add-x-foo-header
 spec:
   targetRefs:
   - group: gateway.networking.k8s.io
@@ -12,5 +12,5 @@ spec:
     headerManipulation:
       responseHeadersToAdd:
       - header:
-          key: foo
-          value: bar
+          key: x-foo
+          value: foo

test/kubernetes/e2e/features/virtualhost_options/types.go

@@ -19,11 +19,12 @@ var (
 		filepath.Join(util.MustGetThisDir(), "testdata", "setup.yaml"),
 		e2edefaults.CurlPodManifest,
 	}
-	basicVhOManifest       = filepath.Join(util.MustGetThisDir(), "testdata", "basic-vho.yaml")
-	sectionNameVhOManifest = filepath.Join(util.MustGetThisDir(), "testdata", "section-name-vho.yaml")
-	extraVhOManifest       = filepath.Join(util.MustGetThisDir(), "testdata", "extra-vho.yaml")
-	badVhOManifest         = filepath.Join(util.MustGetThisDir(), "testdata", "webhook-reject-bad-vho.yaml")
-	extraVhOMergeManifest  = filepath.Join(util.MustGetThisDir(), "testdata", "extra-vho-merge.yaml")
+
+	manifestVhoRemoveXBar      = filepath.Join(util.MustGetThisDir(), "testdata", "vho-remove-x-bar.yaml")
+	manifestVhoSectionAddXFoo  = filepath.Join(util.MustGetThisDir(), "testdata", "vho-section-add-x-foo.yaml")
+	manifestVhoRemoveXBaz      = filepath.Join(util.MustGetThisDir(), "testdata", "vho-remove-x-baz.yaml")
+	manifestVhoWebhookReject   = filepath.Join(util.MustGetThisDir(), "testdata", "vho-webhook-reject.yaml")
+	manifestVhoMergeRemoveXBaz = filepath.Join(util.MustGetThisDir(), "testdata", "vho-merge-remove-x-baz.yaml")
 
 	// When we apply the setup file, we expect resources to be created with this metadata
 	glooProxyObjectMeta = metav1.ObjectMeta{
@@ -50,51 +51,72 @@ var (
 		},
 	}
 
-	// VirtualHostOption resource to be created
-	basicVirtualHostOptionMeta = metav1.ObjectMeta{
-		Name:      "remove-content-length",
+	// VHO to add a x-foo header
+	vhoRemoveXBar = metav1.ObjectMeta{
+		Name:      "remove-x-bar-header",
 		Namespace: "default",
 	}
-	// Extra VirtualHostOption resource to be created
-	extraVirtualHostOptionMeta = metav1.ObjectMeta{
-		Name:      "remove-content-type",
+	// VHO to remove a x-baz header
+	vhoRemoveXBaz = metav1.ObjectMeta{
+		Name:      "remove-x-baz-header",
 		Namespace: "default",
 	}
-	// Extra VirtualHostOption resource to be created to test merging of options
-	extraMergeVirtualHostOptionMeta = metav1.ObjectMeta{
-		Name:      "extra-vho-merge",
+	// VHO to remove a x-baz header
+	vhoMergeRemoveXBaz = metav1.ObjectMeta{
+		Name:      "remove-x-baz-merge",
 		Namespace: "default",
 	}
-	// SectionName VirtualHostOption resource to be created
-	sectionNameVirtualHostOptionMeta = metav1.ObjectMeta{
-		Name:      "add-foo-header",
+	// VHO to add a x-foo header in a section
+	vhoSectionAddXFoo = metav1.ObjectMeta{
+		Name:      "add-x-foo-header",
 		Namespace: "default",
 	}
-	// Bad VirtualHostOption resource to be created
-	badVirtualHostOptionMeta = metav1.ObjectMeta{
+	// VHO that should be rejected by the validating webhook
+	vhoWebhookReject = metav1.ObjectMeta{
 		Name:      "bad-retries",
 		Namespace: "default",
 	}
 
-	expectedResponseWithoutContentLength = &matchers.HttpResponse{
+	// Expects a 200 response with x-bar and x-baz headers
+	defaultResponse = &matchers.HttpResponse{
+		StatusCode: http.StatusOK,
+		Custom: gomega.And(
+			gomega.Not(matchers.ContainHeaderKeys([]string{"x-foo"})),
+			matchers.ContainHeaderKeys([]string{"x-bar", "x-baz"}),
+		),
+		Body: gstruct.Ignore(),
+	}
+
+	// Expects default response with no x-bar header
+	expectedResponseWithoutXBar = &matchers.HttpResponse{
 		StatusCode: http.StatusOK,
-		Custom:     gomega.Not(matchers.ContainHeaderKeys([]string{"content-length"})),
-		Body:       gstruct.Ignore(),
+		Custom: gomega.And(
+			gomega.Not(matchers.ContainHeaderKeys([]string{"x-bar"})),
+			matchers.ContainHeaderKeys([]string{"x-baz"}),
+		),
+		Body: gstruct.Ignore(),
 	}
 
-	expectedResponseWithoutContentType = &matchers.HttpResponse{
+	// Expects default response with no x-baz header
+	expectedResponseWithoutXBaz = &matchers.HttpResponse{
 		StatusCode: http.StatusOK,
-		Custom:     gomega.Not(matchers.ContainHeaderKeys([]string{"content-type"})),
-		Body:       gstruct.Ignore(),
+		Custom: gomega.And(
+			matchers.ContainHeaderKeys([]string{"x-bar"}),
+			gomega.Not(matchers.ContainHeaderKeys([]string{"x-baz"})),
+		),
+		Body: gstruct.Ignore(),
 	}
 
-	expectedResponseWithFooHeader = &matchers.HttpResponse{
+	// Expects default response with x-foo header
+	expectedResponseWithXFoo = &matchers.HttpResponse{
 		StatusCode: http.StatusOK,
 		Headers: map[string]interface{}{
-			"foo": gomega.Equal("bar"),
+			"x-foo": gomega.Equal("foo"),
 		},
-		// Make sure the content-length isn't being removed as a function of the unwanted VHO
-		Custom: matchers.ContainHeaderKeys([]string{"content-length"}),
-		Body:   gstruct.Ignore(),
+		// Make sure the x-bar isn't being removed as a function of the unwanted VHO
+		Custom: gomega.And(
+			matchers.ContainHeaderKeys([]string{"x-foo", "x-bar", "x-baz"}),
+		),
+		Body: gstruct.Ignore(),
 	}
 )