Understanding the NoWhitespaceBefore Check

I may be misunderstanding the NoWhitespaceBefore check, but my current understanding is that it should detect and flag any unwanted whitespace that appears before specific tokens, including:

• Dots (.)
• Semicolons (;)
• String literals ("")
• Method call parentheses (())
• Other similar syntax elements

The check's purpose is to identify and report any unnecessary whitespace preceding these tokens.

Testing Observations:
When testing with 10 straightforward examples, only 1 violation was detected. This low detection rate raises concerns about either:

1. The check's current implementation
2. My interpretation of its intended behavior

Test Case Demonstration

public void testSpaceViolation2() {
     "".equals(""); // Expected violation
    "" .equals(""); // Expected violation - found by current impl. of NoWhitespaceBeforeCheck
    "". equals(""); // Expected violation
    "".equals (""); // Expected violation
    "".equals( ""); // Expected violation
    "".equals("" ); // Expected violation
    "".equals("") ; // Expected violation
    " ".equals("");
    "".equals(" ");
}