Yuta HIGUCHI | baa766f | 2014-07-18 13:48:58 -0700 | [diff] [blame] | 1 | package net.onrc.onos.core.util; |
| 2 | |
| 3 | import static org.junit.Assert.*; |
| 4 | import static net.onrc.onos.core.util.TestUtils.*; |
| 5 | |
| 6 | import org.junit.Before; |
| 7 | import org.junit.Test; |
| 8 | |
| 9 | /** |
| 10 | * Test and usage examples for TestUtils. |
| 11 | */ |
| 12 | public class TestUtilsTest { |
| 13 | |
| 14 | /** |
| 15 | * Test data. |
| 16 | */ |
| 17 | private static final class TestClass { |
| 18 | |
| 19 | @SuppressWarnings("unused") |
| 20 | private int privateField = 42; |
| 21 | |
| 22 | @SuppressWarnings("unused") |
| 23 | protected int protectedField = 2501; // CHECKSTYLE IGNORE THIS LINE |
| 24 | |
| 25 | /** |
| 26 | * Protected method with multiple argument. |
| 27 | * |
| 28 | * @param x simply returns |
| 29 | * @param y not used |
| 30 | * @return x |
| 31 | */ |
| 32 | @SuppressWarnings("unused") |
| 33 | private int privateMethod(Number x, Long y) { |
| 34 | return x.intValue(); |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Protected method with no argument. |
| 39 | * |
| 40 | * @return int |
| 41 | */ |
| 42 | @SuppressWarnings("unused") |
| 43 | protected int protectedMethod() { |
| 44 | return 42; |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Method returning array. |
| 49 | * |
| 50 | * @param ary random array |
| 51 | * @return ary |
| 52 | */ |
| 53 | @SuppressWarnings("unused") |
| 54 | private int[] arrayReturnMethod(int[] ary) { |
| 55 | return ary; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Method without return value. |
| 60 | * |
| 61 | * @param s ignored |
| 62 | */ |
| 63 | @SuppressWarnings("unused") |
| 64 | private void voidMethod(String s) { |
| 65 | System.out.println(s); |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | private TestClass test; |
| 70 | |
| 71 | /** |
| 72 | * setUp. |
| 73 | */ |
| 74 | @Before |
| 75 | public void setUp() { |
| 76 | test = new TestClass(); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Example to access private field. |
| 81 | */ |
| 82 | @Test |
| 83 | public void testSetGetPrivateField() { |
| 84 | |
| 85 | assertEquals(42, getField(test, "privateField")); |
| 86 | setField(test, "privateField", 0xDEAD); |
| 87 | assertEquals(0xDEAD, getField(test, "privateField")); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Example to access protected field. |
| 92 | */ |
| 93 | @Test |
| 94 | public void testSetGetProtectedField() { |
| 95 | |
| 96 | assertEquals(2501, getField(test, "protectedField")); |
| 97 | setField(test, "protectedField", 0xBEEF); |
| 98 | assertEquals(0xBEEF, getField(test, "protectedField")); |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Example to call private method and multiple parameters. |
| 103 | * <p/> |
| 104 | * It also illustrates that paramTypes must match declared type, |
| 105 | * not the runtime types of arguments. |
| 106 | */ |
| 107 | @Test |
| 108 | public void testCallPrivateMethod() { |
| 109 | |
| 110 | int result = callMethod(test, "privateMethod", |
| 111 | new Class<?>[] {Number.class, Long.class}, |
| 112 | Long.valueOf(42), Long.valueOf(32)); |
| 113 | assertEquals(42, result); |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Example to call protected method and no parameters. |
| 118 | */ |
| 119 | @Test |
| 120 | public void testCallProtectedMethod() { |
| 121 | |
| 122 | int result = callMethod(test, "protectedMethod", |
| 123 | new Class<?>[] {}); |
| 124 | assertEquals(42, result); |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * Example to call method returning array. |
| 129 | * <p/> |
| 130 | * Note: It is not required to receive as Object. |
| 131 | * Following is just verifying it is not Boxed arrays. |
| 132 | */ |
| 133 | @Test |
| 134 | public void testCallArrayReturnMethod() { |
| 135 | |
| 136 | int[] array = {1, 2, 3}; |
| 137 | Object aryResult = callMethod(test, "arrayReturnMethod", |
| 138 | new Class<?>[] {int[].class}, array); |
| 139 | assertEquals(int[].class, aryResult.getClass()); |
| 140 | assertArrayEquals(array, (int[]) aryResult); |
| 141 | } |
| 142 | |
| 143 | |
| 144 | /** |
| 145 | * Example to call void returning method. |
| 146 | * <p/> |
| 147 | * Note: Return value will be null for void methods. |
| 148 | */ |
| 149 | @Test |
| 150 | public void testCallVoidReturnMethod() { |
| 151 | |
| 152 | Object voidResult = callMethod(test, "voidMethod", |
| 153 | String.class, "foobar"); |
| 154 | assertNull(voidResult); |
| 155 | } |
| 156 | } |