Config variables reader
Fixes: 182330871
Test: go test config_variables_test.go
Change-Id: I89240fb0f1900172cb4d62057c86907bb9a1f58f
diff --git a/mk2rbc/config_variables_test.go b/mk2rbc/config_variables_test.go
new file mode 100644
index 0000000..f5a5180
--- /dev/null
+++ b/mk2rbc/config_variables_test.go
@@ -0,0 +1,60 @@
+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package mk2rbc
+
+import (
+ "path/filepath"
+ "reflect"
+ "runtime"
+ "testing"
+)
+
+type testVar struct {
+ name string
+ cl varClass
+ ty starlarkType
+}
+
+type testVariables struct {
+ v []testVar
+}
+
+func (v *testVariables) NewVariable(name string, varClass varClass, valueType starlarkType) {
+ v.v = append(v.v, testVar{name, varClass, valueType})
+}
+
+// getTestDirectory returns the test directory, which should be the test/ subdirectory
+func getTestDirectory() string {
+ _, myFile, _, _ := runtime.Caller(1)
+ return filepath.Join(filepath.Dir(myFile), "test")
+}
+
+func TestConfigVariables(t *testing.T) {
+ testFile := filepath.Join(getTestDirectory(), "config_variables.mk.test")
+ var actual testVariables
+ if err := FindConfigVariables(testFile, &actual); err != nil {
+ t.Fatal(err)
+ }
+ expected := testVariables{[]testVar{
+ {"PRODUCT_NAME", VarClassConfig, starlarkTypeUnknown},
+ {"PRODUCT_MODEL", VarClassConfig, starlarkTypeUnknown},
+ {"PRODUCT_LOCALES", VarClassConfig, starlarkTypeList},
+ {"PRODUCT_AAPT_CONFIG", VarClassConfig, starlarkTypeList},
+ {"PRODUCT_AAPT_PREF_CONFIG", VarClassConfig, starlarkTypeUnknown},
+ }}
+ if !reflect.DeepEqual(expected, actual) {
+ t.Errorf("\nExpected: %v\n Actual: %v", expected, actual)
+ }
+}