1 /*
2  * Copyright (C) 2008 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package dot.junit;
18 
19 public class DxAbstractMain {
20 
21     /* NOTE: Because of how tests are generated, this is replicated between
22      *       this class and DxTestCase.
23      */
24 
checkError(Class<?> expectedErrorClass, Throwable thrown, boolean in_invocation_exc)25     private static void checkError(Class<?> expectedErrorClass, Throwable thrown,
26                                    boolean in_invocation_exc) {
27         if (expectedErrorClass != null && thrown == null) {
28             fail("Expected error of type " + expectedErrorClass);
29         } else if (expectedErrorClass == null && thrown != null) {
30             fail("Unexpected error " + thrown);
31         } else if (expectedErrorClass != null && thrown != null) {
32             if (in_invocation_exc) {
33                 if (!(thrown instanceof java.lang.reflect.InvocationTargetException)) {
34                     fail("Expected invocation target exception, but got " + thrown);
35                 }
36                 thrown = thrown.getCause();
37             }
38             if (!expectedErrorClass.equals(thrown.getClass())) {
39                 thrown.printStackTrace(System.err);
40                 fail("Expected error of type " + expectedErrorClass + ", but got " +
41                      thrown.getClass());
42             }
43         }
44     }
45 
46     /**
47      * Try to load the class with the given name, and check for the expected error.
48      */
load(String className, Class<?> expectedErrorClass)49     public static Class<?> load(String className, Class<?> expectedErrorClass) {
50         try {
51             Class<?> c = Class.forName(className);
52             checkError(expectedErrorClass, null, false);
53             return c;
54         } catch (Throwable t) {
55             if (expectedErrorClass != null) {
56                 checkError(expectedErrorClass, t, false);
57             } else {
58                 t.printStackTrace(System.err);
59                 fail("Could not load class " + className + ": " + t);
60             }
61             return null;
62         }
63     }
64 
65     /**
66      * Try to load the class with the given name, find the "run" method and run it.
67      * If expectedErrorClass is not null, check for an exception of that class.
68      */
loadAndRun(String className, boolean isStatic, boolean wrapped, Class<?> expectedErrorClass, Object... args)69     public static void loadAndRun(String className, boolean isStatic, boolean wrapped,
70                                   Class<?> expectedErrorClass, Object... args) {
71         Class<?> c = load(className, null);
72 
73         java.lang.reflect.Method method = null;
74         // We expect only ever one declared method named run, but don't know the arguments. So
75         // search for one.
76         for (java.lang.reflect.Method m : c.getDeclaredMethods()) {
77             if (m.getName().equals("run")) {
78                 method = m;
79                 break;
80             }
81         }
82         if (method == null) {
83             fail("Could not find method 'run'");
84         }
85 
86         Object receiver = null;
87         if (!isStatic) {
88             try {
89                 receiver = c.newInstance();
90             } catch (Exception exc) {
91                 fail("Could not instantiate " + className + ": " + exc.getMessage());
92             }
93         }
94 
95         try {
96             method.invoke(receiver, args);
97             checkError(expectedErrorClass, null, false);
98         } catch (Throwable t) {
99             checkError(expectedErrorClass, t, wrapped);
100         }
101     }
102 
loadAndRun(String className, Class<?> expectedErrorClass)103     public static void loadAndRun(String className, Class<?> expectedErrorClass) {
104         loadAndRun(className, false, true, expectedErrorClass);
105     }
106 
loadAndRun(String className, Class<?> expectedErrorClass, Object... args)107     public static void loadAndRun(String className, Class<?> expectedErrorClass, Object... args) {
108         loadAndRun(className, false, true, expectedErrorClass, args);
109     }
110 
assertEquals(int expected, int actual)111     static public void assertEquals(int expected, int actual) {
112         if (expected != actual) throw new RuntimeException("AssertionFailedError: not equals. Expected " + expected + " actual " + actual);
113     }
114 
assertEquals(String message, int expected, int actual)115     static public void assertEquals(String message, int expected, int actual) {
116         if (expected != actual) throw new RuntimeException("AssertionFailedError: not equals: " + message + " Expected " + expected + " actual " + actual);
117     }
118 
assertEquals(long expected, long actual)119     static public void assertEquals(long expected, long actual) {
120         if (expected != actual) throw new RuntimeException("AssertionFailedError: not equals. Expected " + expected + " actual " + actual);
121     }
122 
assertEquals(double expected, double actual, double delta)123     static public void assertEquals(double expected, double actual, double delta) {
124         if(!(Math.abs(expected-actual) <= delta)) throw new RuntimeException("AssertionFailedError: not within delta");
125     }
126 
assertEquals(Object expected, Object actual)127     static public void assertEquals(Object expected, Object actual) {
128         if (expected == null && actual == null)
129             return;
130         if (expected != null && expected.equals(actual))
131             return;
132         throw new RuntimeException("AssertionFailedError: not the same");
133     }
134 
assertTrue(boolean condition)135     static public void assertTrue(boolean condition) {
136         if (!condition) throw new RuntimeException("AssertionFailedError: condition was false");
137     }
138 
assertFalse(boolean condition)139     static public void assertFalse(boolean condition) {
140         if (condition) throw new RuntimeException("AssertionFailedError: condition was true");
141     }
142 
assertNotNull(Object object)143     static public void assertNotNull(Object object) {
144         if (object == null) throw new RuntimeException("AssertionFailedError: object was null");
145     }
146 
assertNull(Object object)147     static public void assertNull(Object object) {
148         if (object != null) throw new RuntimeException("AssertionFailedError: object was not null");
149     }
150 
fail(String message)151     static public void fail(String message) {
152         throw new RuntimeException("AssertionFailedError msg:"+message);
153     }
154 }
155