wip - TestMergeReplace

pkg/merger/merge.go

@@ -22,8 +22,6 @@ func (rm *resourceMerge) setStrategy() {
 		rm.config = mergo.WithAppendSlice
 	case Combine:
 		rm.config = mergo.WithSliceDeepCopy
-	default:
-		rm.config = func(*mergo.Config) {}
 	}
 }
 

pkg/merger/merge_test.go

@@ -83,10 +83,10 @@ func TestLoadDestinationFile(t *testing.T) {
 	}{
 		{
 			actual: resourceInputFiles{
-				Root:        "./",
-				Destination: "testdata/test_load_destination_file.yaml",
+				Root:        "../../examples/testdata/",
+				Destination: "input/base.yaml",
 			},
-			expected: "foo",
+			expected: "metadata.name",
 		},
 	}
 
@@ -96,3 +96,83 @@ func TestLoadDestinationFile(t *testing.T) {
 			"Expected to be %v, but got %v", tt.expected, tt.actual)
 	}
 }
+
+func TestMergeReplace(t *testing.T) {
+	tests := []struct {
+		name        string
+		desc        string
+		actual      mergerResource
+		expected    map[string]string
+		expectedLen int
+	}{
+		{
+			name: "Test replace with overlay",
+			desc: "The number of the outputs in 'replace+overlay' should be the same as input sources",
+			actual: mergerResource{
+				Name: "test-replace-with-overlay",
+				Input: resourceInput{
+					Method: "overlay",
+					Files: resourceInputFiles{
+						Root: "../../examples/testdata/",
+						Sources: []string{
+							"input/dev.yaml",
+							"input/stage.yaml",
+						},
+						Destination: "input/base.yaml",
+					},
+				},
+				Merge:  resourceMerge{Strategy: "replace"},
+				Output: resourceOutput{Format: "raw"},
+			},
+			expected: map[string]string{
+				// In the overlay the output key are "resource.input.files.sources[*]".
+				"dev.yaml":   "image: dev:1.0.0",
+				"stage.yaml": "image: stage:1.0.0",
+			},
+			expectedLen: 2,
+		},
+		{
+			name: "Test replace with patch",
+			desc: "The number of the outputs in 'replace+patch' should always be one",
+			actual: mergerResource{
+				Name: "test-replace-with-patch",
+				Input: resourceInput{
+					Method: "patch",
+					Files: resourceInputFiles{
+						Root: "../../examples/testdata/",
+						Sources: []string{
+							"input/dev.yaml",
+							"input/stage.yaml",
+						},
+						Destination: "input/base.yaml",
+					},
+				},
+				Merge:  resourceMerge{Strategy: "replace"},
+				Output: resourceOutput{Format: "raw"},
+			},
+			expected: map[string]string{
+				// In the patch the output key are "resource.name".
+				"test-replace-with-patch": "image: stage:1.0.0",
+			},
+			expectedLen: 1,
+		},
+	}
+
+	for _, tt := range tests {
+		// Those methods are called in the Default method.
+		tt.actual.Input.Files.setRoot()
+		tt.actual.Merge.setStrategy()
+		tt.actual.Output.items = make(map[string]string)
+
+		// Merge.
+		tt.actual.merge()
+
+		// Assert.
+		assert.Equal(t, len(tt.actual.Output.items), tt.expectedLen)
+		for k, v := range tt.expected {
+			output := tt.actual.Output.items[k]
+			assert.Contains(t, output, v,
+				"Expected to be %v=%v, but got %v", k, v, output)
+		}
+	}
+}