Add test to cover plugins overriding

Signed-off-by: Angel Misevski <[email protected]>

Author: amisevsk

pkg/utils/overriding/overriding_test.go

@@ -304,6 +304,36 @@ func TestMerging(t *testing.T) {
 	})
 }
 
+func TestPluginOverrides(t *testing.T) {
+	originalFile := "test-fixtures/patches/override-just-plugin/original.yaml"
+	patchFile := "test-fixtures/patches/override-just-plugin/patch.yaml"
+	resultFile := "test-fixtures/patches/override-just-plugin/result.yaml"
+
+	originalDWT := workspaces.DevWorkspaceTemplateSpecContent{}
+	patch := workspaces.PluginOverrides{}
+	expectedDWT := workspaces.DevWorkspaceTemplateSpecContent{}
+
+	readFileToStruct(t, originalFile, &originalDWT)
+	readFileToStruct(t, patchFile, &patch)
+	readFileToStruct(t, resultFile, &expectedDWT)
+
+	gotDWT, err := OverrideDevWorkspaceTemplateSpec(&originalDWT, patch)
+	if assert.NoError(t, err) {
+		assert.Equal(t, &expectedDWT, gotDWT)
+	}
+}
+
+func readFileToStruct(t *testing.T, path string, into interface{}) {
+	bytes, err := ioutil.ReadFile(path)
+	if err != nil {
+		t.Fatalf("Failed to read test file from %s: %s", path, err.Error())
+	}
+	err = yaml.Unmarshal(bytes, into)
+	if err != nil {
+		t.Fatalf("Failed to unmarshal file into struct: %s", err.Error())
+	}
+}
+
 // Since order of error message lines is not deterministic, it's necessary to compare
 // in a weaker way than asserting string equality.
 func compareErrorMessages(t *testing.T, expected, actual string, failReason string) {

pkg/utils/overriding/test-fixtures/patches/override-just-plugin/original.yaml

@@ -0,0 +1,20 @@
+projects:
+  - name: test-project
+    git:
+      remotes:
+        origin: "https://test-data.io"
+
+components:
+  - name: my-component
+    container:
+      image: testimg
+
+commands:
+  - id: test-command
+    exec:
+      component: my-component
+      commandLine: "echo 'just a test'"
+
+events:
+  preStart:
+    - test-command

pkg/utils/overriding/test-fixtures/patches/override-just-plugin/patch.yaml

@@ -0,0 +1,10 @@
+components:
+  - name: my-component
+    container:
+      image: overridden-image
+
+commands:
+  - id: test-command
+    exec:
+      component: my-component
+      commandLine: "echo 'this bit is updated'"

pkg/utils/overriding/test-fixtures/patches/override-just-plugin/result.yaml

@@ -0,0 +1,20 @@
+projects:
+  - name: test-project
+    git:
+      remotes:
+        origin: "https://test-data.io"
+
+components:
+  - name: my-component
+    container:
+      image: overridden-image
+
+commands:
+  - id: test-command
+    exec:
+      component: my-component
+      commandLine: "echo 'this bit is updated'"
+
+events:
+  preStart:
+    - test-command