/*
 * Copyright 2007 Google Inc.
 * 
 * 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.
 */

/*
 * Portions copyright 2006 Mat Gessel <mat.gessel@gmail.com>; licensed under
 * Apache 2.0
 */
package com.google.gwt.junit.client;

import junit.framework.AssertionFailedError;

/**
 * This class tests our implementation of the GWTTestCase class which provides
 * the behavior of TestCase that is necessary in GWT.
 */
public class GWTTestCaseTest extends GWTTestCase {

  private static void assertNotEquals(double a, double b, double delta) {
    boolean failed = false;
    try {
      assertEquals(a, b, delta);
    } catch (AssertionFailedError e) {
      // EXPECTED
      failed = true;
    }

    if (!failed) {
      fail("Expected failure for assertEquals(" + a + ", " + b + ", " + delta
          + ")");
    }
  }

  private static void assertNotEquals(float a, float b, float delta) {
    boolean failed = false;
    try {
      assertEquals(a, b, delta);
    } catch (AssertionFailedError e) {
      // EXPECTED
      failed = true;
    }

    if (!failed) {
      fail("Expected failure for assertEquals(" + a + ", " + b + ", " + delta
          + ")");
    }
  }

  public String getModuleName() {
    return "com.google.gwt.junit.JUnit";
  }

  public void testAssertEqualsDouble() {
    assertEquals(0.0, 0.0, 0.0);
    assertEquals(1.1, 1.1, 0.0);
    assertEquals(-1.1, -1.1, 0.0);
    assertEquals(Float.MIN_VALUE, Float.MIN_VALUE, 0.0);
    assertEquals(Float.MAX_VALUE, Float.MAX_VALUE, 0.0);
    assertNotEquals(0.0, 0.00000000000000000000000000000000000000001, 0.0);
    assertNotEquals(0.0, 0.0000000000000000001, 0.0);
    assertNotEquals(0.0, 0.000000001, 0.0);
    assertNotEquals(0.0, 0.0001, 0.0);
    assertNotEquals(0.0, 0.1, 0.0);
    assertNotEquals(1.0, 2.0, 0.1);
    assertNotEquals(2.0, 1.0, 0.1);
    assertNotEquals(-1.0, -2.0, 0.1);
    assertNotEquals(-2.0, -1.0, 0.1);
  }

  public void testAssertEqualsFloat() {
    assertEquals(0.0f, 0.0f, 0.0f);
    assertEquals(1.1f, 1.1f, 0.0f);
    assertEquals(-1.1f, -1.1f, 0.0f);
    assertEquals(Float.MIN_VALUE, Float.MIN_VALUE, 0.0f);
    assertEquals(Float.MAX_VALUE, Float.MAX_VALUE, 0.0f);
    assertNotEquals(0.0f, 0.00000000000000000000000000000000000000001f, 0.0f);
    assertNotEquals(0.0f, 0.0000000000000000001f, 0.0f);
    assertNotEquals(0.0f, 0.000000001f, 0.0f);
    assertNotEquals(0.0f, 0.0001f, 0.0f);
    assertNotEquals(0.0f, 0.1f, 0.0f);
    assertNotEquals(1.0f, 2.0f, 0.1f);
    assertNotEquals(2.0f, 1.0f, 0.1f);
    assertNotEquals(-1.0f, -2.0f, 0.1f);
    assertNotEquals(-2.0f, -1.0f, 0.1f);
  }

  /**
   * 
   */
  public void testAssertEqualsIntInt() {
    assertEquals(5, 5);

    boolean exWasThrown = false;
    try {
      assertEquals(5, 4);
    } catch (Throwable ex) {
      exWasThrown = true;
      if (!(ex instanceof AssertionFailedError)) {
        fail("Unexpected type of exception during assertEquals(int,int) testing");
      }
    }

    if (!exWasThrown) {
      fail("No exception was thrown during assertEquals(int,int) testing");
    }
  }

  /**
   * 
   */
  public void testAssertEqualsObjectObject() {
    Object obj1 = "String";

    assertEquals(obj1, obj1);

    boolean exWasThrown = false;
    try {
      Object obj2 = "not String";
      assertEquals(obj1, obj2);
    } catch (Throwable ex) {
      exWasThrown = true;
      if (!(ex instanceof AssertionFailedError)) {
        fail("Unexpected type of exception during assertEquals(String,String) testing");
      }
    }

    if (!exWasThrown) {
      fail("No exception was thrown during assertEquals(String,String) testing");
    }
  }

  /**
   * 
   */
  public void testAssertEqualsStringIntInt() {
    assertEquals("", 5, 5);

    boolean exWasThrown = false;
    try {
      assertEquals("hello", 5, 4);
    } catch (Throwable ex) {
      exWasThrown = true;
      if (!(ex instanceof AssertionFailedError)) {
        fail("Unexpected type of exception during assertEquals(String,int,int) testing");
      }
    }

    if (!exWasThrown) {
      fail("No exception was thrown during assertEquals(String,int,int) testing");
    }
  }

  /**
   * 
   */
  public void testAssertEqualsStringObjectObject() {
    Object obj1 = "String";

    assertEquals("msg", obj1, obj1);

    boolean exWasThrown = false;
    try {
      Object obj2 = "not String";
      assertEquals("msg", obj1, obj2);
    } catch (Throwable ex) {
      exWasThrown = true;
      if (!(ex instanceof AssertionFailedError)) {
        fail("Unexpected type of exception during assertEquals(String,Object,Object) testing");
      }
    }

    if (!exWasThrown) {
      fail("No exception was thrown during assertEquals(String,Object,Object) testing");
    }
  }

  /**
   * 
   */
  public void testAssertFalse() {
    // Should not fail
    assertFalse(false);

    // Should not fail
    assertFalse("We should be okay", false);

    boolean exWasThrown = false;
    try {
      // Should fail
      assertFalse(true);
    } catch (Throwable ex) {
      exWasThrown = true;
      if (!(ex instanceof AssertionFailedError)) {
        fail("Unexpected type of exception during assertFalse(boolean) testing");
      }
    }

    if (!exWasThrown) {
      fail("No exception was thrown");
    }
    exWasThrown = false;

    try {
      // Should fail
      assertFalse("This should be okay", true);
    } catch (Throwable ex) {
      exWasThrown = true;
      if (ex instanceof AssertionFailedError) {
        return;
      }
    }

    if (!exWasThrown)
      fail("No exception was thrown");
    else
      fail("Unexpected exception during assertFalse(String, boolean) testing");
  }

  /**
   * 
   */
  public void testAssertNotNull() {
    assertNotNull("Hello");
    assertNotNull("We should be okay", "Hello");

    try {
      assertNotNull("Hello");
    } catch (Throwable ex) {
      if (!(ex instanceof AssertionFailedError)) {
        fail("Unexpected type of exception during assertNotNull(Object) testing");
      }
    }

    try {
      assertNotNull("This should be okay", null);
    } catch (Throwable ex) {
      if (ex instanceof AssertionFailedError) {
        return;
      }
    }

    fail("Unexpected exception during assertNotNull(String, Object) testing");
  }

  /**
   * 
   */
  public void testAssertNotSame() {
    Object obj1 = "Foo";
    Object obj2 = "Bar";

    assertNotSame(obj1, obj2);
    assertNotSame("Hello", obj1, obj2);

    try {
      assertNotSame(obj1, "Baz");
    } catch (Throwable ex) {
      if (!(ex instanceof AssertionFailedError)) {
        fail("Unexpected type of exception");
      }
    }
  }

  /**
   * 
   */
  public void testAssertNull() {
    assertNull(null);
    assertNull("We should be okay", null);

    try {
      assertNull("Hello");
    } catch (Throwable ex) {
      if (!(ex instanceof AssertionFailedError)) {
        fail("Unexpected type of exception during assertNull(Object) testing");
      }
    }

    try {
      assertNull("This should be okay", "Hello");
    } catch (Throwable ex) {
      if (ex instanceof AssertionFailedError) {
        return;
      }
    }

    fail("Unexpected exception during assertNull(String, Object) testing");
  }

  /**
   * 
   */
  public void testAssertSame() {
    // TODO(mmendez): finish this test
  }

  /**
   * 
   */
  public void testAssertTrue() {
    assertTrue(true);
    assertTrue("We should be okay", true);

    try {
      assertTrue(false);
    } catch (Throwable ex) {
      if (!(ex instanceof AssertionFailedError)) {
        fail("Unexpected type of exception during assertFalse(boolean) testing");
      }
    }

    try {
      assertTrue("This should be okay", false);
    } catch (Throwable ex) {
      if (ex instanceof AssertionFailedError) {
        return;
      }
    }

    fail("Unexpected exception during assertTrue(String, boolean) testing");
  }
}