trying json encoding

Author: grantnelson-wf

build/cache/cache_test.go

@@ -114,6 +114,47 @@ func TestOldCache(t *testing.T) {
 	}
 }
 
+func TestSkipOfTestPackage(t *testing.T) {
+	cacheForTest(t)
+
+	const data = `fake/data`
+	const importPath = "fake/package"
+	want := &CacheableMock{Data: data}
+	srcModTime := newTime(0.0)
+	buildTime := newTime(5.0)
+
+	bc := BuildCache{}
+	if !bc.Store(want, importPath, buildTime) {
+		t.Errorf("Failed to store %s with %q.", importPath, want.Data)
+	}
+
+	// Simulate writing a cache for a pacakge under test.
+	bc.TestedPackage = importPath
+	if bc.Store(want, importPath, buildTime) {
+		t.Errorf("Got: cache stored for %q. Want: test packages to not write to cache.", importPath)
+	}
+	if bc.Store(want, importPath+"_test", buildTime) {
+		t.Errorf("Got: cache stored for %q. Want: test packages to not write to cache.", importPath+"_test")
+	}
+
+	// Simulate reading the cache for a pacakge under test.
+	got := &CacheableMock{}
+	if bc.Load(got, importPath, srcModTime) {
+		t.Errorf("Got: cache with %q. Want: test package cache to not be loaded for %q.", got.Data, importPath)
+	}
+	got = &CacheableMock{}
+	if bc.Load(got, importPath+"_test", srcModTime) {
+		t.Errorf("Got: cache with %q. Want: test package cache to not be loaded for %q.", got.Data, importPath+"_test")
+	}
+
+	// No package under test, cache should work normally and load previously stored non-test package.
+	bc.TestedPackage = ""
+	got = &CacheableMock{}
+	if !bc.Load(got, importPath, srcModTime) || got.Data != want.Data {
+		t.Errorf("Got: cache with %q. Want: up-to-date package cache to be loaded with %q.", got.Data, want.Data)
+	}
+}
+
 func cacheForTest(t *testing.T) {
 	t.Helper()
 	originalRoot := cacheRoot