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-rw-r--r--context/context_test.go22
-rw-r--r--context/testdata/merging/context.yaml15
-rw-r--r--context/testdata/merging/import-vars.yaml4
-rw-r--r--context/testdata/merging/resource/default.yaml5
-rw-r--r--context/testdata/merging/resource/output.yaml5
5 files changed, 51 insertions, 0 deletions
diff --git a/context/context_test.go b/context/context_test.go
index e700cf41978a..34c77cc9b7c6 100644
--- a/context/context_test.go
+++ b/context/context_test.go
@@ -293,3 +293,25 @@ func TestSetInvalidVariablesFromArguments(t *testing.T) {
 		t.Error("Expected invalid variable to return an error")
 	}
 }
+
+// This test ensures that variables are merged in the correct order.
+// Please consult the test data in `testdata/merging`.
+func TestValueMergePrecedence(t *testing.T) {
+	cliVars:= []string{"cliVar=cliVar"}
+	ctx, _ := LoadContext("testdata/merging/context.yaml", &cliVars)
+
+	expected := map[string]interface{}{
+		"defaultVar": "defaultVar",
+		"importVar": "importVar",
+		"globalVar": "globalVar",
+		"includeVar": "includeVar",
+		"cliVar": "cliVar",
+	}
+
+	result := ctx.ResourceSets[0].Values
+
+	if !reflect.DeepEqual(expected, result) {
+		t.Errorf("Merged values did not match expected result: \n%v", result)
+		t.Fail()
+	}
+}
diff --git a/context/testdata/merging/context.yaml b/context/testdata/merging/context.yaml
new file mode 100644
index 000000000000..df30d3d8cbe3
--- /dev/null
+++ b/context/testdata/merging/context.yaml
@@ -0,0 +1,15 @@
+# This context file is intended to test the merge hierarchy of
+# variables defined at different levels.
+---
+context: merging.in.kontemplate.works
+global:
+  globalVar: globalVar
+  includeVar: should be overridden (global)
+  cliVar: should be overridden (global)
+import:
+  - import-vars.yaml
+include:
+  - name: resource
+    values:
+      includeVar: includeVar
+      cliVar: should be overridden (include)
diff --git a/context/testdata/merging/import-vars.yaml b/context/testdata/merging/import-vars.yaml
new file mode 100644
index 000000000000..2a51352571a6
--- /dev/null
+++ b/context/testdata/merging/import-vars.yaml
@@ -0,0 +1,4 @@
+importVar: importVar
+globalVar: should be overridden (import)
+includeVar: should be overridden (import)
+cliVar: should be overridden (import)
diff --git a/context/testdata/merging/resource/default.yaml b/context/testdata/merging/resource/default.yaml
new file mode 100644
index 000000000000..040a19aaba25
--- /dev/null
+++ b/context/testdata/merging/resource/default.yaml
@@ -0,0 +1,5 @@
+defaultVar: defaultVar
+importVar: should be overridden (default)
+globalVar: should be overridden (default)
+includeVar: should be overridden (default)
+cliVar: should be overridden (default)
diff --git a/context/testdata/merging/resource/output.yaml b/context/testdata/merging/resource/output.yaml
new file mode 100644
index 000000000000..5920b2720780
--- /dev/null
+++ b/context/testdata/merging/resource/output.yaml
@@ -0,0 +1,5 @@
+defaultVar: {{ .defaultVar }}
+importVar: {{ .importVar }}
+globalVar: {{ .globalVar }}
+includeVar: {{ .includeVar }}
+cliVar: {{ .cliVar }}