All test code should be formatted in accordance with Google Java Format's {@link Formatter} + * output, and imports should be ordered according to the {@link Style#GOOGLE Google} style. + * + *
This checker inspects inline code passed to {@code
+ * com.google.errorprone.CompilationTestHelper} and {@code
+ * com.google.errorprone.BugCheckerRefactoringTestHelper}. It requires that this code is properly
+ * formatted and that its imports are organized. Only code that represents the expected output of a
+ * refactoring operation is allowed to have unused imports, as most {@link BugChecker}s do not (and
+ * are not able to) remove imports that become obsolete as a result of applying their suggested
+ * fix(es).
+ */
+// XXX: Once we target JDK 17 (optionally?) suggest text block fixes.
+// XXX: GJF guesses the line separator to be used by inspecting the source. When using text blocks
+// this may cause the current unconditional use of `\n` not to be sufficient when building on
+// Windows; TBD.
+@AutoService(BugChecker.class)
+@BugPattern(
+ name = "ErrorProneTestHelperSourceFormat",
+ summary = "Test code should follow the Google Java style",
+ linkType = NONE,
+ severity = SUGGESTION,
+ tags = STYLE)
+public final class ErrorProneTestHelperSourceFormatCheck extends BugChecker
+ implements MethodInvocationTreeMatcher {
+ private static final long serialVersionUID = 1L;
+ private static final Formatter FORMATTER = new Formatter();
+ private static final Matcher