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Java example source code file (VerifyTest.java)

This example Java source code file (VerifyTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

assertionfailederror, format, gwtcompatible, ignore_me, non_null_string, object, override, string, testcase, verifyexception, verifytest

The VerifyTest.java Java example source code

/*
 * Copyright (C) 2013 The Guava 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.common.base;

import static com.google.common.base.Verify.verify;
import static com.google.common.base.Verify.verifyNotNull;
import static com.google.common.truth.Truth.assertThat;

import com.google.common.annotations.GwtCompatible;

import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

/**
 * Unit test for {@link com.google.common.base.Verify}.
 */
@GwtCompatible
public class VerifyTest extends TestCase {
  public void testVerify_simple_success() {
    verify(true);
  }

  public void testVerify_simple_failure() {
    try {
      verify(false);
      fail();
    } catch (VerifyException expected) {
    }
  }

  public void testVerify_simpleMessage_success() {
    verify(true, "message");
  }

  public void testVerify_simpleMessage_failure() {
    try {
      verify(false, "message");
      fail();
    } catch (VerifyException expected) {
      assertThat(expected).hasMessage("message");
    }
  }

  public void testVerify_complexMessage_success() {
    verify(true, "%s", IGNORE_ME);
  }

  public void testVerify_complexMessage_failure() {
    try {
      verify(false, FORMAT, 5);
      fail();
    } catch (VerifyException expected) {
      checkMessage(expected);
    }
  }

  private static final String NON_NULL_STRING = "foo";

  public void testVerifyNotNull_simple_success() {
    String result = verifyNotNull(NON_NULL_STRING);
    assertSame(NON_NULL_STRING, result);
  }

  public void testVerifyNotNull_simple_failure() {
    try {
      verifyNotNull(null);
      fail();
    } catch (VerifyException expected) {
    }
  }

  public void testVerifyNotNull_complexMessage_success() {
    String result = verifyNotNull(NON_NULL_STRING, "%s", IGNORE_ME);
    assertSame(NON_NULL_STRING, result);
  }

  public void testVerifyNotNull_simpleMessage_failure() {
    try {
      verifyNotNull(null, FORMAT, 5);
      fail();
    } catch (VerifyException expected) {
      checkMessage(expected);
    }
  }

  private static final Object IGNORE_ME = new Object() {
    @Override public String toString() {
      throw new AssertionFailedError();
    }
  };

  private static final String FORMAT = "I ate %s pies.";

  private static void checkMessage(Exception e) {
    assertThat(e).hasMessage("I ate 5 pies.");
  }
}

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