mirror of
https://github.com/wneessen/go-mail.git
synced 2024-12-22 18:50:37 +01:00
Add unit tests for SMTP client extensions, reset, and noop
Introduced new unit tests to verify the SMTP client's behavior with extensions, reset, and noop commands under various server conditions. Updated server response handling to correctly manage feature sets when they are empty.
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GPG key ID:
385AC9889632126E
1 changed files with 237 additions and 2 deletions
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@ -2890,6 +2890,233 @@ Goodbye.`)
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})
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}
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func TestClient_Extension(t *testing.T) {
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t.Run("extension check fails on EHLO/HELO", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-DSN\r\n250 STARTTLS"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FailOnEhlo: true,
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FailOnHelo: true,
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Fatalf("failed to dial to test server: %s", err)
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}
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t.Cleanup(func() {
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if err = client.Close(); err != nil {
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t.Errorf("failed to close client: %s", err)
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}
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})
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if ok, _ := client.Extension("DSN"); ok {
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t.Error("expected client extension check to fail on EHLO/HELO")
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}
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})
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}
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func TestClient_Reset(t *testing.T) {
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t.Run("reset on functioning client conneciton", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-DSN\r\n250 STARTTLS"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Fatalf("failed to dial to test server: %s", err)
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}
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t.Cleanup(func() {
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if err = client.Close(); err != nil {
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t.Errorf("failed to close client: %s", err)
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}
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})
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if err = client.Reset(); err != nil {
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t.Errorf("failed to reset client: %s", err)
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}
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})
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t.Run("reset fails on RSET", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-DSN\r\n250 STARTTLS"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FailOnReset: true,
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Fatalf("failed to dial to test server: %s", err)
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}
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t.Cleanup(func() {
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if err = client.Close(); err != nil {
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t.Errorf("failed to close client: %s", err)
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}
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})
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if err = client.Reset(); err == nil {
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t.Error("expected client reset to fail")
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}
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})
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t.Run("reset fails on EHLO/HELO", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-DSN\r\n250 STARTTLS"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FailOnEhlo: true,
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FailOnHelo: true,
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Fatalf("failed to dial to test server: %s", err)
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}
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t.Cleanup(func() {
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if err = client.Close(); err != nil {
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t.Errorf("failed to close client: %s", err)
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}
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})
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if err = client.Reset(); err == nil {
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t.Error("expected client reset to fail")
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}
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})
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}
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func TestClient_Noop(t *testing.T) {
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t.Run("noop on functioning client conneciton", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-DSN\r\n250 STARTTLS"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Fatalf("failed to dial to test server: %s", err)
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}
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t.Cleanup(func() {
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if err = client.Close(); err != nil {
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t.Errorf("failed to close client: %s", err)
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}
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})
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if err = client.Noop(); err != nil {
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t.Errorf("failed client no-operation: %s", err)
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}
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})
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t.Run("noop fails on EHLO/HELO", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-DSN\r\n250 STARTTLS"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FailOnEhlo: true,
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FailOnHelo: true,
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Fatalf("failed to dial to test server: %s", err)
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}
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t.Cleanup(func() {
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if err = client.Close(); err != nil {
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t.Errorf("failed to close client: %s", err)
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}
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})
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if err = client.Noop(); err == nil {
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t.Error("expected client no-operation to fail")
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}
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})
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t.Run("noop fails on NOOP", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-DSN\r\n250 STARTTLS"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FailOnNoop: true,
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Fatalf("failed to dial to test server: %s", err)
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}
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t.Cleanup(func() {
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if err = client.Close(); err != nil {
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t.Errorf("failed to close client: %s", err)
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}
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})
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if err = client.Noop(); err == nil {
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t.Error("expected client no-operation to fail")
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}
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})
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}
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/*
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@ -4391,7 +4618,11 @@ func handleTestServerConnection(connection net.Conn, t *testing.T, props *server
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writeLine("500 5.5.2 Error: fail on HELO")
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break
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}
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writeLine("250-localhost.localdomain\r\n" + props.FeatureSet)
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if props.FeatureSet != "" {
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writeLine("250-localhost.localdomain\r\n" + props.FeatureSet)
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break
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}
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writeLine("250 localhost.localdomain\r\n")
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case strings.HasPrefix(data, "EHLO"):
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if len(strings.Split(data, " ")) != 2 {
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writeLine("501 Syntax: EHLO hostname")
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@ -4401,7 +4632,11 @@ func handleTestServerConnection(connection net.Conn, t *testing.T, props *server
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writeLine("500 5.5.2 Error: fail on EHLO")
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break
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}
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writeLine("250-localhost.localdomain\r\n" + props.FeatureSet)
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if props.FeatureSet != "" {
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writeLine("250-localhost.localdomain\r\n" + props.FeatureSet)
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break
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}
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writeLine("250 localhost.localdomain\r\n")
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case strings.HasPrefix(data, "MAIL FROM:"):
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if props.FailOnMailFrom {
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writeLine("500 5.5.2 Error: fail on MAIL FROM")
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