Add PrintPluginEnv plugin.

api/krusty/testingharness_test.go

@@ -23,12 +23,21 @@ type testingHarness struct {
 }
 
 func makeTestHarness(t *testing.T) testingHarness {
+	return makeTestHarnessWithFs(t, filesys.MakeFsInMemory())
+}
+
+func makeTestHarnessWithFs(
+	t *testing.T, fSys filesys.FileSystem) testingHarness {
 	return testingHarness{
 		t:    t,
-		fSys: filesys.MakeFsInMemory(),
+		fSys: fSys,
 	}
 }
 
+func (th testingHarness) GetT() *testing.T {
+	return th.t
+}
+
 func (th testingHarness) WriteK(path string, content string) {
 	th.fSys.WriteFile(
 		filepath.Join(