Function TestPrepareStdinValues

cmd/local_test.go:259–326

(t *testing.T)

}

func TestPrepareStdinValues(t *testing.T) {
	l := &local{
		valueFiles: valueFiles{"-", "-", "real-values.yaml"},
	}

	stdinContent := `key: stdin-value
`
	tmpStdin, err := os.CreateTemp("", "fake-stdin")
	if err != nil {
		t.Fatal(err)
	}
	defer os.Remove(tmpStdin.Name())
	if _, err := tmpStdin.WriteString(stdinContent); err != nil {
		t.Fatal(err)
	}
	if err := tmpStdin.Close(); err != nil {
		t.Fatal(err)
	}

	oldStdin := os.Stdin
	f, err := os.Open(tmpStdin.Name())
	if err != nil {
		t.Fatal(err)
	}
	os.Stdin = f
	defer func() {
		os.Stdin = oldStdin
		f.Close()
	}()

	cleanup, err := l.prepareStdinValues()
	if err != nil {
		t.Fatalf("Expected no error but got: %v", err)
	}
	if cleanup == nil {
		t.Fatal("Expected cleanup function but got nil")
	}

	if l.valueFiles[0] == "-" {
		t.Error("Expected first valueFile to be replaced with temp file path")
	}
	if l.valueFiles[1] == "-" {
		t.Error("Expected second valueFile to be replaced with temp file path")
	}
	if l.valueFiles[0] != l.valueFiles[1] {
		t.Errorf("Expected both '-' entries to point to the same temp file, got %q and %q", l.valueFiles[0], l.valueFiles[1])
	}
	if _, err := os.Stat(l.valueFiles[0]); os.IsNotExist(err) {
		t.Errorf("Expected temp file %q to exist", l.valueFiles[0])
	}
	if l.valueFiles[2] != "real-values.yaml" {
		t.Errorf("Expected third valueFile to be unchanged, got %q", l.valueFiles[2])
	}

	data, err := os.ReadFile(l.valueFiles[0])
	if err != nil {
		t.Fatalf("Failed to read temp file: %v", err)
	}