Test fixes

build.gradle

@@ -138,8 +138,10 @@ tasks.withType(Test).configureEach {
 
 test {
     include '**/NullSpecTest$Minimal.class'
-
     inputs.files("${rootDir}/tests/minimal")
+
+    include '**/NullSpecTest$Regression.class'
+    inputs.files("${rootDir}/tests/regression")
 }
 
 tasks.register('jspecifySamplesTest', Test) {

src/main/java/com/google/jspecify/nullness/ConformanceTypeInformationPresenter.java

@@ -16,7 +16,6 @@
 
 import com.sun.source.tree.AssignmentTree;
 import com.sun.source.tree.ClassTree;
-import com.sun.source.tree.ExpressionTree;
 import com.sun.source.tree.MethodInvocationTree;
 import com.sun.source.tree.Tree;
 import java.util.List;
@@ -85,9 +84,6 @@ protected void reportTreeType(
           String methodName = calledElem.getSimpleName().toString();
           AnnotatedExecutableType calledType = (AnnotatedExecutableType) type;
           List<? extends AnnotatedTypeMirror> params = calledType.getParameterTypes();
-          MethodInvocationTree mit = (MethodInvocationTree) tree;
-          List<? extends ExpressionTree> args = mit.getArguments();
-          assert params.size() == args.size();
 
           for (int i = 0; i < params.size(); ++i) {
             String paramName = calledElem.getParameters().get(i).getSimpleName().toString();

src/test/java/tests/ConformanceTest.java

@@ -29,7 +29,6 @@
 import java.io.IOException;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.Objects;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.stream.Stream;
@@ -142,8 +141,7 @@ private static ImmutableSet<ReportedFact> analyze(
             TestUtilities.getShouldEmitDebugInfo());
     TypecheckResult result = new TypecheckExecutor().runTest(config);
     return result.getUnexpectedDiagnostics().stream()
-        .map(d -> DetailMessage.parse(d.getMessage(), testDirectory))
-        .filter(Objects::nonNull)
+        .map(d -> DetailMessage.parse(d, testDirectory))
         // Do not filter out messages without details.
         // .filter(DetailMessage::hasDetails)
         .map(DetailMessageReportedFact::new)
@@ -182,7 +180,7 @@ static final class DetailMessageReportedFact extends ReportedFact {
     private final DetailMessage detailMessage;
 
     DetailMessageReportedFact(DetailMessage detailMessage) {
-      super(detailMessage.file, detailMessage.lineNumber);
+      super(detailMessage.getFile(), detailMessage.getLineNumber());
       this.detailMessage = detailMessage;
     }
 

src/test/java/tests/DetailMessage.java

@@ -4,16 +4,13 @@
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.collect.Iterables.getLast;
 import static java.lang.Integer.parseInt;
-import static java.util.Arrays.stream;
 import static java.util.regex.Pattern.DOTALL;
-import static java.util.stream.Collectors.joining;
 
 import com.google.common.base.Joiner;
 import com.google.common.base.Splitter;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Iterables;
 import java.nio.file.Path;
-import java.nio.file.Paths;
 import java.util.List;
 import java.util.Objects;
 import java.util.regex.Matcher;
@@ -30,13 +27,6 @@
  */
 final class DetailMessage extends TestDiagnostic {
 
-  private static final Pattern MESSAGE_PATTERN =
-      Pattern.compile(
-          "(?<file>\\S+):(?<lineNumber>\\d+): (?<kind>"
-              + stream(DiagnosticKind.values()).map(k -> k.parseString).collect(joining("|"))
-              + "): (?<message>.*)",
-          DOTALL);
-
   /** Parser for the output for -Adetailedmsgtext. */
   // Implemented here: org.checkerframework.framework.source.SourceChecker#detailedMsgTextPrefix
   private static final Pattern DETAIL_MESSAGE_PATTERN =
@@ -49,12 +39,6 @@ final class DetailMessage extends TestDiagnostic {
   private static final Pattern OFFSETS_PATTERN =
       Pattern.compile("(\\( (?<start>-?\\d+), (?<end>-?\\d+) \\))?");
 
-  /** The path to the source file containing the diagnostic. */
-  final Path file;
-
-  /** The line number (1-based) of the diagnostic in the {@link #file}. */
-  final int lineNumber;
-
   /** The message key for the user-visible text message that is emitted. */
   final String messageKey;
 
@@ -71,30 +55,30 @@ final class DetailMessage extends TestDiagnostic {
   final String readableMessage;
 
   /**
-   * Returns an object parsed from a diagnostic message, or {@code null} if the message doesn't
-   * match the expected format.
+   * Returns an object parsed from a diagnostic message.
    *
    * @param rootDirectory if not null, a root directory prefix to remove from the file part of the
    *     message
    */
-  static @Nullable DetailMessage parse(String input, @Nullable Path rootDirectory) {
-    Matcher messageMatcher = MESSAGE_PATTERN.matcher(input);
-    if (!messageMatcher.matches()) {
-      return null;
-    }
-
-    Path file = Paths.get(messageMatcher.group("file"));
-    if (rootDirectory != null) {
+  static DetailMessage parse(TestDiagnostic input, @Nullable Path rootDirectory) {
+    Path file = input.getFile();
+    if (rootDirectory != null && file.startsWith(rootDirectory)) {
+      // Empty file strings cannot be relativized.
       file = rootDirectory.relativize(file);
     }
-    int lineNumber = parseInt(messageMatcher.group("lineNumber"));
-    DiagnosticKind kind = DiagnosticKind.fromParseString(messageMatcher.group("kind"));
 
-    String message = messageMatcher.group("message");
-    Matcher detailsMatcher = DETAIL_MESSAGE_PATTERN.matcher(message);
+    Matcher detailsMatcher = DETAIL_MESSAGE_PATTERN.matcher(input.getMessage());
     if (!detailsMatcher.matches()) {
       // Return a message with no key or parts.
-      return new DetailMessage(file, lineNumber, kind, "", ImmutableList.of(), null, null, message);
+      return new DetailMessage(
+          file,
+          input.getLineNumber(),
+          input.getKind(),
+          "",
+          ImmutableList.of(),
+          null,
+          null,
+          input.getMessage());
     }
 
     int messagePartCount = parseInt(detailsMatcher.group("messagePartCount"));
@@ -112,8 +96,8 @@ final class DetailMessage extends TestDiagnostic {
 
     return new DetailMessage(
         file,
-        lineNumber,
-        kind,
+        input.getLineNumber(),
+        input.getKind(),
         detailsMatcher.group("messageKey"),
         messageArguments,
         intOrNull(offsetsMatcher.group("start")),
@@ -127,28 +111,21 @@ private static Integer intOrNull(String input) {
 
   private DetailMessage(
       Path file,
-      int lineNumber,
+      long lineNumber,
       DiagnosticKind diagnosticKind,
       String messageKey,
       ImmutableList<String> messageArguments,
       Integer offsetStart,
       Integer offsetEnd,
       String readableMessage) {
-    super(file.toString(), lineNumber, diagnosticKind, readableMessage, false, true);
-    this.file = file;
-    this.lineNumber = lineNumber;
+    super(file, lineNumber, diagnosticKind, readableMessage, false);
     this.messageKey = messageKey;
     this.messageArguments = messageArguments;
     this.offsetStart = offsetStart;
     this.offsetEnd = offsetEnd;
     this.readableMessage = readableMessage;
   }
 
-  /** The last part of the {@link #file}. */
-  String getFileName() {
-    return file.getFileName().toString();
-  }
-
   /**
    * True if this was parsed from an actual {@code -Adetailedmsgtext} message; false if this was
    * some other diagnostic.
@@ -183,14 +160,15 @@ public int hashCode() {
 
   @Override
   public String toString() {
-    return String.format("%s:%d: (%s) %s", file, lineNumber, messageKey, readableMessage);
+    return String.format("%s:%d:%s: (%s) %s", file, lineNumber, kind, messageKey, readableMessage);
   }
 
   /** String format for debugging use. */
   String toDetailedString() {
     return toStringHelper(this)
         .add("file", file)
         .add("lineNumber", lineNumber)
+        .add("kind", kind)
         .add("messageKey", messageKey)
         .add("messageArguments", messageArguments)
         .add("offsetStart", offsetStart)

src/test/java/tests/NullSpecTest.java

@@ -41,6 +41,18 @@ public static String[] getTestDirs() {
     }
   }
 
+  /** A small set of regression tests. */
+  public static class Regression extends NullSpecTest {
+    public Regression(List<File> testFiles) {
+      super(testFiles, false);
+    }
+
+    @Parameters
+    public static String[] getTestDirs() {
+      return new String[] {"regression"};
+    }
+  }
+
   /** A test that ignores cases where there is limited nullness information. */
   public static class Lenient extends NullSpecTest {
     public Lenient(List<File> testFiles) {
@@ -105,7 +117,7 @@ public TypecheckResult adjustTypecheckResult(TypecheckResult testResult) {
 
     for (ListIterator<TestDiagnostic> i = unexpected.listIterator(); i.hasNext(); ) {
       TestDiagnostic diagnostic = i.next();
-      DetailMessage detailMessage = DetailMessage.parse(diagnostic.getMessage(), null);
+      DetailMessage detailMessage = DetailMessage.parse(diagnostic, null);
       if (detailMessage != null && detailMessage.hasDetails()) {
         // Replace diagnostics that can be parsed with DetailMessage diagnostics.
         i.set(detailMessage);
@@ -145,8 +157,8 @@ private boolean corresponds(TestDiagnostic missing, TestDiagnostic unexpected) {
    */
   private boolean corresponds(TestDiagnostic missing, DetailMessage unexpected) {
     // First, make sure the two diagnostics are on the same file and line.
-    if (!missing.getFilename().equals(unexpected.getFileName())
-        || missing.getLineNumber() != unexpected.lineNumber) {
+    if (!missing.getFilename().equals(unexpected.getFilename())
+        || missing.getLineNumber() != unexpected.getLineNumber()) {
       return false;
     }