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Add test coverage for WriteToTempFile method

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Implemented unit tests for WriteToTempFile, including successful writing to a temporary file and failure cases due to an invalid TMPDIR. These tests ensure the method behaves correctly under different conditions and enhances code robustness.
This commit is contained in:
Winni Neessen 2024-10-28 18:52:02 +01:00
parent c28bd7e331
commit d0280ea9ad
Signed by: wneessen
GPG key ID: 385AC9889632126E
2 changed files with 61 additions and 22 deletions
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40
msg_test.go
View file

@ -6037,6 +6037,46 @@ func TestMsg_HasSendError(t *testing.T) {
})
}
func TestMsg_WriteToTempFile(t *testing.T) {
if os.Getenv("PERFORM_UNIX_OPEN_WRITE_TESTS") != "true" {
t.Skipf("PERFORM_UNIX_OPEN_WRITE_TESTS variable is not set. Skipping unix open/write tests")
}
t.Run("WriteToTempFile succeeds", func(t *testing.T) {
message := testMessage(t)
tempFile, err := message.WriteToTempFile()
if err != nil {
t.Fatalf("failed to write message to temp file: %s", err)
}
parsed, err := EMLToMsgFromFile(tempFile)
if err != nil {
t.Fatalf("failed to parse message in buffer: %s", err)
}
checkAddrHeader(t, parsed, HeaderFrom, "WriteTo", 0, 1, TestSenderValid, "")
checkAddrHeader(t, parsed, HeaderTo, "WriteTo", 0, 1, TestRcptValid, "")
checkGenHeader(t, parsed, HeaderSubject, "WriteTo", 0, 1, "Testmail")
parts := parsed.GetParts()
if len(parts) != 1 {
t.Fatalf("expected 1 parts, got: %d", len(parts))
}
if parts[0].contentType != TypeTextPlain {
t.Errorf("expected contentType to be %s, got: %s", TypeTextPlain, parts[0].contentType)
}
if parts[0].encoding != EncodingQP {
t.Errorf("expected encoding to be %s, got: %s", EncodingQP, parts[0].encoding)
}
messageBuf := bytes.NewBuffer(nil)
_, err = parts[0].writeFunc(messageBuf)
if err != nil {
t.Errorf("writer func failed: %s", err)
}
got := strings.TrimSpace(messageBuf.String())
if !strings.HasSuffix(got, "Testmail") {
t.Errorf("expected message buffer to contain Testmail, got: %s", got)
}
})
}
/*
// TestMsg_hasAlt tests the hasAlt() method of the Msg

43
msg_unix_test.go
View file

@ -120,28 +120,27 @@ func TestMsg_WriteToFile_unixOnly(t *testing.T) {
})
}
/*
func TestMsg_WriteToTempFileFailed(t *testing.T) {
m := NewMsg()
_ = m.From("Toni Tester <tester@example.com>")
_ = m.To("Ellenor Tester <ellinor@example.com>")
m.SetBodyString(TypeTextPlain, "This is a test")
func TestMsg_WriteToTempFile_unixOnly(t *testing.T) {
if os.Getenv("PERFORM_UNIX_OPEN_WRITE_TESTS") != "true" {
t.Skipf("PERFORM_UNIX_OPEN_WRITE_TESTS variable is not set. Skipping unix open/write tests")
}
curTmpDir := os.Getenv("TMPDIR")
defer func() {
if err := os.Setenv("TMPDIR", curTmpDir); err != nil {
t.Errorf("failed to set TMPDIR environment variable: %s", err)
t.Run("WriteToTempFile fails on invalid TMPDIR", func(t *testing.T) {
// We store the current TMPDIR variable so we can set it back when the test is over
curTmpDir := os.Getenv("TMPDIR")
t.Cleanup(func() {
if err := os.Setenv("TMPDIR", curTmpDir); err != nil {
t.Errorf("failed to set TMPDIR environment variable: %s", err)
}
})
if err := os.Setenv("TMPDIR", "/invalid/directory/that/does/not/exist"); err != nil {
t.Fatalf("failed to set TMPDIR environment variable: %s", err)
}
}()
if err := os.Setenv("TMPDIR", "/invalid/directory/that/does/not/exist"); err != nil {
t.Errorf("failed to set TMPDIR environment variable: %s", err)
}
_, err := m.WriteToTempFile()
if err == nil {
t.Errorf("WriteToTempFile() did not fail as expected")
}
message := testMessage(t)
_, err := message.WriteToTempFile()
if err == nil {
t.Errorf("expected writing to invalid TMPDIR to fail, got: %s", err)
}
})
}
*/