TEST: Doesn't work

Investigate why.

error-prone-contrib/src/main/java/tech/picnic/errorprone/refasterrules/AssortedRules.java

@@ -13,10 +13,15 @@ import com.google.common.collect.Iterables;
 import com.google.common.collect.Iterators;
 import com.google.common.collect.Sets;
 import com.google.common.collect.Streams;
+import com.google.errorprone.bugpatterns.BugChecker;
+import com.google.errorprone.matchers.Description;
 import com.google.errorprone.refaster.Refaster;
 import com.google.errorprone.refaster.annotation.AfterTemplate;
 import com.google.errorprone.refaster.annotation.BeforeTemplate;
 import com.google.errorprone.refaster.annotation.UseImportPolicy;
+import com.sun.source.tree.Tree;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashSet;
@@ -210,6 +215,29 @@ final class AssortedRules {
     }
   }
 
+  @SuppressWarnings("serial")
+  static final class DescribeMatch extends BugChecker {
+    @BeforeTemplate
+    Description before(Tree tree) {
+      return buildDescription(tree).build();
+    }
+
+    @BeforeTemplate
+    Description before(DiagnosticPosition tree) {
+      return buildDescription(tree).build();
+    }
+
+    @BeforeTemplate
+    Description before(JCTree tree) {
+      return buildDescription(tree).build();
+    }
+
+    @AfterTemplate
+    Description after(Tree tree) {
+      return describeMatch(tree);
+    }
+  }
+
   // /**
   //  * Don't unnecessarily pass a method reference to {@link Supplier#get()} or wrap this method
   //  * in a lambda expression.

error-prone-contrib/src/test/resources/tech/picnic/errorprone/refasterrules/AssortedRulesTestInput.java

@@ -10,6 +10,11 @@ import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Sets;
 import com.google.common.collect.Streams;
+import com.google.errorprone.bugpatterns.BugChecker;
+import com.google.errorprone.matchers.Description;
+import com.sun.source.tree.Tree;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.stream.Stream;
@@ -87,4 +92,20 @@ final class AssortedRulesTest implements RefasterRuleCollectionTestCase {
         Streams.stream(Splitter.on(':').split("foo")),
         Splitter.on(',').splitToList(new StringBuilder("bar")).stream());
   }
+
+  BugChecker testDescribeMatch() {
+    return new BugChecker() {
+      Description testDescribeMatch(DiagnosticPosition diagnosticPosition) {
+        return buildDescription(diagnosticPosition).build();
+      }
+
+      Description testDescribeMatch(JCTree tree) {
+        return buildDescription(tree).build();
+      }
+
+      Description testDescribeMatch(Tree tree) {
+        return buildDescription(tree).build();
+      }
+    };
+  }
 }

error-prone-contrib/src/test/resources/tech/picnic/errorprone/refasterrules/AssortedRulesTestOutput.java

@@ -13,6 +13,11 @@ import com.google.common.collect.Iterables;
 import com.google.common.collect.Iterators;
 import com.google.common.collect.Sets;
 import com.google.common.collect.Streams;
+import com.google.errorprone.bugpatterns.BugChecker;
+import com.google.errorprone.matchers.Description;
+import com.sun.source.tree.Tree;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.stream.Stream;
@@ -86,4 +91,20 @@ final class AssortedRulesTest implements RefasterRuleCollectionTestCase {
         Splitter.on(':').splitToStream("foo"),
         Splitter.on(',').splitToStream(new StringBuilder("bar")));
   }
+
+  BugChecker testDescribeMatch() {
+    return new BugChecker() {
+      Description testDescribeMatch(DiagnosticPosition diagnosticPosition) {
+        return describeMatch(diagnosticPosition);
+      }
+
+      Description testDescribeMatch(JCTree tree) {
+        return describeMatch(tree);
+      }
+
+      Description testDescribeMatch(Tree tree) {
+        return describeMatch(tree);
+      }
+    };
+  }
 }

refaster-test-support/src/main/java/tech/picnic/errorprone/refaster/test/RefasterRuleCollection.java

@@ -121,7 +121,11 @@ public final class RefasterRuleCollection extends BugChecker implements Compilat
     String className = clazz.getSimpleName();
 
     BugCheckerRefactoringTestHelper.newInstance(RefasterRuleCollection.class, clazz)
-        .setArgs(ImmutableList.of("-XepOpt:" + RULE_COLLECTION_FLAG + '=' + className))
+        .setArgs(
+            ImmutableList.of(
+                "-XepOpt:" + RULE_COLLECTION_FLAG + '=' + className,
+                "--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED",
+                "--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED"))
         .addInput(className + "TestInput.java")
         .addOutput(className + "TestOutput.java")
         .doTest(TEXT_MATCH);