Cygwin下Bash移除Java性能测试@Ignore及切换测试开关的问题

Got it, let’s work through this @Ignore removal issue you’re hitting in Cygwin. I’ve dealt with similar line-ending quirks before, so here’s exactly what’s going wrong and how to fix it:

The Root Cause: Windows Line Endings (CRLF) #

Cygwin tools like sed are built to handle Unix-style line endings (LF), but if your Java test files were created/edited on Windows, they probably use CRLF (carriage return + line feed) endings. This extra \r character at the end of lines throws off sed’s pattern matching—when you try to target @Ignore, sed is actually looking for @Ignore\r behind the scenes, so your regular expression never matches correctly.

Step-by-Step Fixes #

1. Verify the Line Ending Format #

First, confirm your file has CRLF endings with this command:

file YourPerformanceTest.java

If the output includes "CRLF line terminators", you’ve found the culprit.

2. Option 1: Convert the File to Unix Line Endings (Permanent Fix) #

Use dos2unix to convert the file once, then your sed commands will work as expected:

# Convert to Unix line endings
dos2unix YourPerformanceTest.java

# Now remove @Ignore (adjust the pattern to match your code)
# If @Ignore is on the same line as the test method:
sed -i 's/^@Ignore //' YourPerformanceTest.java

# If @Ignore is a standalone line:
sed -i '/^@Ignore$/d' YourPerformanceTest.java

Note: If your Cygwin sed complains about the -i flag, try adding an empty backup suffix (common in some versions): sed -i'' 's/^@Ignore //' YourPerformanceTest.java

3. Option 2: Handle Line Endings Directly in sed (Temporary Fix) #

If you don’t want to modify the file’s line endings permanently, adjust your sed command to account for the \r character:

# Remove @Ignore from method lines (accounts for CRLF)
sed -i 's/^@Ignore \r$//; s/^@Ignore //' YourPerformanceTest.java

# Remove standalone @Ignore lines (with CRLF)
sed -i '/^@Ignore\r$/d' YourPerformanceTest.java

This first strips the trailing \r before matching your pattern.

4. Double-Check Your Pattern #

Make sure your sed pattern matches exactly how @Ignore appears in your code:

• Is there a space after @Ignore?
• Is it at the start of the line?
• Is it on its own line or inline with the test method signature?

Tweak the regex as needed—for example, if @Ignore has surrounding whitespace, use s/^\s*@Ignore\s*// to match any leading/trailing spaces.

内容的提问来源于stack exchange，提问作者user447607