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https://github.com/wneessen/go-mail.git
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Add integration tests for invalid host and HELO failure
Add test cases to validate client behavior on connecting with an invalid host and encountering a HELO failure. This helps ensure the client handles these error scenarios correctly, maintaining robustness and reliability.
This commit is contained in:
parent
0db1383940
commit
d281f838d4
GPG key ID:
385AC9889632126E
1 changed files with 59 additions and 108 deletions
167
client_test.go
167
client_test.go
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@ -1647,6 +1647,23 @@ func TestClient_DialWithContext(t *testing.T) {
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t.Fatalf("client has no connection")
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}
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})
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t.Run("fail on invalid host", func(t *testing.T) {
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ctxDial, cancelDial := context.WithTimeout(ctx, time.Millisecond*500)
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t.Cleanup(cancelDial)
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client, err := NewClient(DefaultHost, WithPort(serverPort), WithTLSPolicy(NoTLS))
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if err != nil {
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t.Fatalf("failed to create new client: %s", err)
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}
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client.host = "invalid.addr"
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if err = client.DialWithContext(ctxDial); err == nil {
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t.Errorf("client with invalid host should fail")
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}
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if client.smtpClient != nil {
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t.Errorf("client with invalid host should not have a smtp client")
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}
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})
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t.Run("fail on base port and fallback", func(t *testing.T) {
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ctxDial, cancelDial := context.WithTimeout(ctx, time.Millisecond*500)
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t.Cleanup(cancelDial)
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@ -1701,119 +1718,48 @@ func TestClient_DialWithContext(t *testing.T) {
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t.Errorf("logAuthData not working, no authentication info found in logs")
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}
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})
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t.Run("connect should fail on 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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failServerPort := int(TestServerPortBase + PortAdder.Load())
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failFeatureSet := "250-AUTH PLAIN\r\n250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8"
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go func() {
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if err := simpleSMTPServer(ctx, &serverProps{
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FailOnHelo: true,
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FeatureSet: failFeatureSet,
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ListenPort: failServerPort,
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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 * 300)
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ctxDial, cancelDial := context.WithTimeout(ctx, time.Millisecond*500)
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t.Cleanup(cancelDial)
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client, err := NewClient(DefaultHost, WithPort(failServerPort), WithTLSPolicy(NoTLS))
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if err != nil {
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t.Fatalf("failed to create new client: %s", err)
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}
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if err = client.DialWithContext(ctxDial); err == nil {
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t.Fatalf("connection was supposed to fail, but didn't")
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}
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if client.smtpClient == nil {
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t.Fatalf("client has no smtp client")
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}
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if !client.smtpClient.HasConnection() {
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t.Errorf("client has no connection")
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}
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})
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// TODO: Implement tests for TLS/SSL and custom DialCtxFunc
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}
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/*
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// TestClient_DialWithContext tests the DialWithContext method for the Client object
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func TestClient_DialWithContext(t *testing.T) {
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c, err := getTestConnection(true)
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if err != nil {
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t.Skipf("failed to create test client: %s. Skipping tests", err)
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}
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ctx := context.Background()
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if err = c.DialWithContext(ctx); err != nil {
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t.Errorf("failed to dial with context: %s", err)
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return
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}
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if c.smtpClient == nil {
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t.Errorf("DialWithContext didn't fail but no SMTP client found.")
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return
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}
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if !c.smtpClient.HasConnection() {
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t.Errorf("DialWithContext didn't fail but no connection found.")
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}
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if err := c.Close(); err != nil {
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t.Errorf("failed to close connection: %s", err)
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}
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}
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// TestClient_DialWithContext_Fallback tests the Client.DialWithContext method with the fallback
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// port functionality
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func TestClient_DialWithContext_Fallback(t *testing.T) {
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c, err := getTestConnectionNoTestPort(true)
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if err != nil {
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t.Skipf("failed to create test client: %s. Skipping tests", err)
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}
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c.SetTLSPortPolicy(TLSOpportunistic)
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c.port = 999
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ctx := context.Background()
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if err = c.DialWithContext(ctx); err != nil {
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t.Errorf("failed to dial with context: %s", err)
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return
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}
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if c.smtpClient == nil {
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t.Errorf("DialWithContext didn't fail but no SMTP client found.")
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return
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}
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if !c.smtpClient.HasConnection() {
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t.Errorf("DialWithContext didn't fail but no connection found.")
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}
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if err = c.Close(); err != nil {
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t.Errorf("failed to close connection: %s", err)
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}
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c.port = 999
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c.fallbackPort = 999
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if err = c.DialWithContext(ctx); err == nil {
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t.Error("dial with context was supposed to fail, but didn't")
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return
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}
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}
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// TestClient_DialWithContext_Debug tests the DialWithContext method for the Client object with debug
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// logging enabled on the SMTP client
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func TestClient_DialWithContext_Debug(t *testing.T) {
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c, err := getTestClient(true)
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if err != nil {
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t.Skipf("failed to create test client: %s. Skipping tests", err)
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}
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ctx := context.Background()
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if err = c.DialWithContext(ctx); err != nil {
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t.Errorf("failed to dial with context: %s", err)
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return
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}
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if c.smtpClient == nil {
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t.Errorf("DialWithContext didn't fail but no SMTP client found.")
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return
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}
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if !c.smtpClient.HasConnection() {
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t.Errorf("DialWithContext didn't fail but no connection found.")
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}
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c.SetDebugLog(true)
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if err = c.Close(); err != nil {
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t.Errorf("failed to close connection: %s", err)
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}
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}
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// TestClient_DialWithContext_Debug_custom tests the DialWithContext method for the Client
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// object with debug logging enabled and a custom logger on the SMTP client
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func TestClient_DialWithContext_Debug_custom(t *testing.T) {
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c, err := getTestClient(true)
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if err != nil {
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t.Skipf("failed to create test client: %s. Skipping tests", err)
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}
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ctx := context.Background()
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if err = c.DialWithContext(ctx); err != nil {
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t.Errorf("failed to dial with context: %s", err)
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return
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}
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if c.smtpClient == nil {
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t.Errorf("DialWithContext didn't fail but no SMTP client found.")
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return
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}
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if !c.smtpClient.HasConnection() {
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t.Errorf("DialWithContext didn't fail but no connection found.")
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}
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c.SetDebugLog(true)
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c.SetLogger(log.New(os.Stderr, log.LevelDebug))
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if err = c.Close(); err != nil {
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t.Errorf("failed to close connection: %s", err)
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}
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}
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// TestClient_DialWithContextInvalidHost tests the DialWithContext method with intentional breaking
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// for the Client object
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func TestClient_DialWithContextInvalidHost(t *testing.T) {
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@ -3685,8 +3631,9 @@ func parseJSONLog(t *testing.T, buf *bytes.Buffer) logData {
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}
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type serverProps struct {
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FailOnReset bool
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FailOnHelo bool
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FailOnQuit bool
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FailOnReset bool
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FeatureSet string
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ListenPort int
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}
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@ -3762,6 +3709,10 @@ func handleTestServerConnection(connection net.Conn, props *serverProps) {
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fmt.Printf("expected EHLO, got %q", data)
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return
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}
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if props.FailOnHelo {
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_ = writeLine("500 5.5.2 Error: fail on HELO")
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return
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}
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if err = writeLine("250-localhost.localdomain\r\n" + props.FeatureSet); err != nil {
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return
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}
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