/*
 * Copyright 2016 The Closure Compiler Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.javascript.jscomp.testing;

import static com.google.common.truth.Truth.assertAbout;
import static org.junit.Assert.assertEquals;

import com.google.common.truth.FailureMetadata;
import com.google.common.truth.Subject;
import com.google.javascript.jscomp.DiagnosticType;
import com.google.javascript.jscomp.JSError;
import javax.annotation.CheckReturnValue;

/**
 * A Truth Subject for the JSError class. Usage:
 * <pre>
 *   import static com.google.javascript.jscomp.testing.JSErrorSubject.assertNode;
 *   ...
 *   assertError(error).hasType(TypeValidator.TYPE_MISMATCH);
 * </pre>
 * TODO(tbreisacher): Add assertions on the message text, line number, etc.
 */
public final class JSErrorSubject extends Subject<JSErrorSubject, JSError> {
  @CheckReturnValue
  public static JSErrorSubject assertError(JSError error) {
    return assertAbout(JSErrorSubject::new).that(error);
  }

  private final JSError actual;

  public JSErrorSubject(FailureMetadata failureMetadata, JSError error) {
    super(failureMetadata, error);
    this.actual = error;
  }

  public void hasType(DiagnosticType type) {
    String message = "Expected an error of type " + type + " but got: " + actual;
    assertEquals(message, type, actual.getType());
  }

  public void hasMessage(String msg) {
    assertEquals(
        "Expected an error with message:\n" + msg + " but got:\n" + actual,
        msg,
        actual.description);
  }
}

@@ -713,53 +713,8 @@
 out;
-%0Aimport static org.junit.Assert.assertEquals;
 %0A%0Aim
@@ -1689,134 +1689,64 @@
     
-String message = %22Expected an error of type %22 + type + %22 but got: %22 + actual;%0A    assertEquals(message, type, actual.getT
+check(%22getType()%22).that(actual.getType()).isEqualTo(t
 ype
-()
 );%0A 
@@ -1796,119 +1796,34 @@
     
-assertEquals(%0A        %22Expected an error with message:%5Cn%22 + msg + %22 but got:%5Cn%22 + actual,%0A        msg,%0A        
+check(%22description%22).that(
 actu
@@ -1837,16 +1837,31 @@
 ription)
+.isEqualTo(msg)
 ;%0A  %7D%0A%7D%0A

Fix TruthOnly warnings in JSErrorSubject