add replacement transformer

api/krusty/replacementtransformer_test.go

@@ -0,0 +1,271 @@
+package krusty_test
+
+import (
+	"testing"
+
+	kusttest_test "sigs.k8s.io/kustomize/api/testutils/kusttest"
+)
+
+// end to end tests to demonstrate functionality of ReplacementTransformer
+func TestReplacementsField(t *testing.T) {
+	th := kusttest_test.MakeEnhancedHarness(t)
+	defer th.Reset()
+
+	th.WriteK(".", `
+resources:
+- resource.yaml
+
+replacements:
+- source:
+    kind: Deployment
+    fieldPath: spec.template.spec.containers.0.image
+  targets:
+  - select:
+      kind: Deployment
+    fieldPaths:
+    - spec.template.spec.containers.1.image
+`)
+	th.WriteF("resource.yaml", `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deploy
+spec:
+  template:
+    spec:
+      containers:
+      - image: foobar:1
+        name: replaced-with-digest
+      - image: postgres:1.8.0
+        name: postgresdb
+`)
+	expected := `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deploy
+spec:
+  template:
+    spec:
+      containers:
+      - image: foobar:1
+        name: replaced-with-digest
+      - image: foobar:1
+        name: postgresdb
+`
+	m := th.Run(".", th.MakeDefaultOptions())
+	th.AssertActualEqualsExpected(m, expected)
+}
+
+func TestReplacementsFieldWithPath(t *testing.T) {
+	th := kusttest_test.MakeEnhancedHarness(t)
+	defer th.Reset()
+
+	th.WriteK(".", `
+resources:
+- resource.yaml
+
+replacements:
+- path: replacement.yaml
+`)
+	th.WriteF("replacement.yaml",
+		`
+source: 
+  kind: Deployment
+  fieldPath: spec.template.spec.containers.0.image
+targets:
+- select:
+    kind: Deployment
+  fieldPaths: 
+  - spec.template.spec.containers.1.image
+`)
+	th.WriteF("resource.yaml", `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deploy
+spec:
+  template:
+    spec:
+      containers:
+      - image: foobar:1
+        name: replaced-with-digest
+      - image: postgres:1.8.0
+        name: postgresdb
+`)
+	expected := `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deploy
+spec:
+  template:
+    spec:
+      containers:
+      - image: foobar:1
+        name: replaced-with-digest
+      - image: foobar:1
+        name: postgresdb
+`
+	m := th.Run(".", th.MakeDefaultOptions())
+	th.AssertActualEqualsExpected(m, expected)
+}
+
+func TestReplacementTransformerWithDiamondShape(t *testing.T) {
+	th := kusttest_test.MakeEnhancedHarness(t)
+	defer th.Reset()
+
+	th.WriteF("base/deployment.yaml",
+		`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deploy
+spec:
+  template:
+    spec:
+      containers:
+      - image: nginx:1.7.9
+        name: nginx
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: sourceA
+spec:
+  template:
+    spec:
+      containers:
+      - image: nginx:newtagA
+        name: nginx
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: sourceB
+spec:
+  template:
+    spec:
+      containers:
+      - image: nginx:newtagB
+        name: nginx
+`)
+	th.WriteF("base/kustomization.yaml",
+		`
+resources:
+- deployment.yaml
+`)
+	th.WriteF("a/kustomization.yaml",
+		`
+namePrefix: a-
+resources:
+- ../base
+replacements:
+- path: replacement.yaml
+`)
+	th.WriteF("a/replacement.yaml",
+		`
+source:
+  name: a-sourceA
+  fieldPath: spec.template.spec.containers.0.image
+targets:
+- select:
+    name: a-deploy
+  fieldPaths:
+  - spec.template.spec.containers.[name=nginx].image
+`)
+	th.WriteF("b/kustomization.yaml",
+		`
+namePrefix: b-
+resources:
+- ../base
+replacements:
+- path: replacement.yaml
+`)
+	th.WriteF("b/replacement.yaml",
+		`
+source:
+  name: b-sourceB
+  fieldPath: spec.template.spec.containers.0.image
+targets:
+- select:
+    name: b-deploy
+  fieldPaths:
+  - spec.template.spec.containers.[name=nginx].image
+`)
+	th.WriteF("combined/kustomization.yaml",
+		`
+resources:
+- ../a
+- ../b
+`)
+
+	m := th.Run("combined", th.MakeDefaultOptions())
+	th.AssertActualEqualsExpected(m, `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: a-deploy
+spec:
+  template:
+    spec:
+      containers:
+      - image: nginx:newtagA
+        name: nginx
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: a-sourceA
+spec:
+  template:
+    spec:
+      containers:
+      - image: nginx:newtagA
+        name: nginx
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: a-sourceB
+spec:
+  template:
+    spec:
+      containers:
+      - image: nginx:newtagB
+        name: nginx
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: b-deploy
+spec:
+  template:
+    spec:
+      containers:
+      - image: nginx:newtagB
+        name: nginx
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: b-sourceA
+spec:
+  template:
+    spec:
+      containers:
+      - image: nginx:newtagA
+        name: nginx
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: b-sourceB
+spec:
+  template:
+    spec:
+      containers:
+      - image: nginx:newtagB
+        name: nginx
+`)
+}