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18 package org.apache.bcel.classfile;
19
20 import static org.junit.jupiter.api.Assertions.assertEquals;
21 import static org.junit.jupiter.api.Assertions.assertFalse;
22 import static org.junit.jupiter.api.Assertions.assertNotNull;
23 import static org.junit.jupiter.api.Assertions.assertNull;
24 import static org.junit.jupiter.api.Assertions.assertTrue;
25
26 import java.util.Arrays;
27
28 import org.apache.bcel.Const;
29 import org.apache.bcel.Repository;
30 import org.junit.jupiter.api.Test;
31
32 public class UtilityTestCase {
33
34 @Test
35 public void testClearBit() {
36 assertEquals(0, Utility.clearBit(0, 0));
37 assertEquals(0, Utility.clearBit(1, 0), "1 bit 0 set to 0 -> 0");
38 assertEquals(1, Utility.clearBit(1, 1), "1 bit 1 is 0 hence no change");
39 assertEquals(8, Utility.clearBit(8, 4), "1000 only has 4 bit hence no change");
40 assertEquals(1, Utility.clearBit(9, 3), "1001 bit 3 set to 0 -> 0001");
41 assertEquals(-2, Utility.clearBit(-1, 0), "111...11 set bit 0 to 0 -> 111..10");
42 assertEquals(0, Utility.clearBit(Integer.MIN_VALUE, 31), "100...00 set bit 31 to 0 -> 000..00");
43 }
44
45 @Test
46 public void testCodeToString() throws Exception {
47 final class CodeToString {
48 int[][] a = new int[0][0];
49
50 CodeToString() {
51 if (a instanceof int[][]) {
52 System.out.print(Arrays.asList(a).size());
53 }
54 }
55 }
56 final JavaClass javaClass = Repository.lookupClass(CodeToString.class);
57 assertNotNull(javaClass);
58 for (final Method method : javaClass.getMethods()) {
59 assertEquals("<init>", method.getName());
60 final String code = method.getCode().toString(false);
61 assertTrue(code.contains("0: aload_0"), code);
62 assertTrue(code.contains("1: aload_1"), code);
63 assertTrue(
64 code.contains(
65 "2: putfield\t\torg.apache.bcel.classfile.UtilityTestCase$1CodeToString.this$0 Lorg/apache/bcel/classfile/UtilityTestCase;"),
66 code);
67 assertTrue(code.contains("5: aload_0"), code);
68 assertTrue(code.contains("6: invokespecial\tjava.lang.Object.<init> ()V"), code);
69 assertTrue(code.contains("9: aload_0"), code);
70 assertTrue(code.contains("10: iconst_0"), code);
71 assertTrue(code.contains("11: iconst_0"), code);
72 assertTrue(code.contains("12: multianewarray\t<[[I>\t2"), code);
73 assertTrue(code.contains("16: putfield\t\torg.apache.bcel.classfile.UtilityTestCase$1CodeToString.a [[I"), code);
74 assertTrue(code.contains("19: aload_0"), code);
75 assertTrue(code.contains("20: getfield\t\torg.apache.bcel.classfile.UtilityTestCase$1CodeToString.a [[I"), code);
76 assertTrue(code.contains("23: instanceof\t<[[I>"), code);
77 assertTrue(code.contains("26: ifeq\t\t#47"), code);
78 assertTrue(code.contains("29: getstatic\t\tjava.lang.System.out Ljava/io/PrintStream;"), code);
79 assertTrue(code.contains("32: aload_0"), code);
80 assertTrue(code.contains("33: getfield\t\torg.apache.bcel.classfile.UtilityTestCase$1CodeToString.a [[I"), code);
81 assertTrue(code.contains("36: invokestatic\tjava.util.Arrays.asList ([Ljava/lang/Object;)Ljava/util/List;"), code);
82 assertTrue(code.contains("39: invokeinterface\tjava.util.List.size ()I1\t0"), code);
83 assertTrue(code.contains("44: invokevirtual\tjava.io.PrintStream.print (I)V"), code);
84 assertTrue(code.contains("47: return"), code);
85 }
86 }
87
88 @Test
89 public void testConvertString() {
90 assertEquals("\\n", Utility.convertString("\n"));
91 assertEquals("\\r", Utility.convertString("\r"));
92 assertEquals("\\\"", Utility.convertString("\""));
93 assertEquals("\\'", Utility.convertString("'"));
94 assertEquals("\\\\", Utility.convertString("\\"));
95 assertEquals("abc", Utility.convertString("abc"));
96 }
97
98 @Test
99 public void testIsSet() {
100 assertTrue(Utility.isSet(1, 0));
101 assertTrue(Utility.isSet(7, 1));
102 assertTrue(Utility.isSet(8, 3));
103 assertTrue(Utility.isSet(9, 0));
104 assertTrue(Utility.isSet(Integer.MIN_VALUE, 31));
105 assertFalse(Utility.isSet(0, 0));
106 assertFalse(Utility.isSet(8, 4));
107 assertFalse(Utility.isSet(9, 1));
108 }
109
110 @Test
111 public void testPrintArray() {
112 assertNull(Utility.printArray(null, false, false));
113 assertEquals("", Utility.printArray(new Object[0], false, false));
114 assertEquals("{}", Utility.printArray(new Object[0], true, false));
115 assertEquals("null", Utility.printArray(new Object[] { null }, false, false));
116 assertEquals("a, b", Utility.printArray(new String[] { "a", "b" }, false, false));
117 assertEquals("{a, b}", Utility.printArray(new String[] { "a", "b" }, true, false));
118 assertEquals("\"a\", \"b\"", Utility.printArray(new String[] { "a", "b" }, false, true));
119 assertEquals("{\"a\", \"b\"}", Utility.printArray(new String[] { "a", "b" }, true, true));
120 }
121
122 @Test
123 public void testSearchOpcode() {
124 assertEquals(Const.ALOAD, Utility.searchOpcode("aload"));
125 assertEquals(Const.NOP, Utility.searchOpcode("nop"));
126 assertEquals(Const.BREAKPOINT, Utility.searchOpcode("breakpoint"));
127 assertEquals(Const.IMPDEP2, Utility.searchOpcode("impdep2"));
128 assertEquals(Const.I2D, Utility.searchOpcode("I2D"), "case insensitive");
129 assertEquals(Const.UNDEFINED, Utility.searchOpcode("???"), "not found");
130 }
131
132 @Test
133 public void testSetBit() {
134 assertEquals(1, Utility.setBit(0, 0), "0 bit 0 set to 1 -> 1");
135 assertEquals(1, Utility.setBit(1, 0), "1 bit 0 is 1 hence no change");
136 assertEquals(3, Utility.setBit(1, 1), "1 bit 1 set to 1 -> 3");
137 assertEquals(8, Utility.setBit(8, 3), "1000 bit 3 is 1 hence no change");
138 assertEquals(9, Utility.setBit(1, 3), "0001 bit 3 set to 1 -> 1001");
139 assertEquals(-1, Utility.setBit(-2, 0), "111...10 set bit 0 to 1 -> 111..11");
140 assertEquals(Integer.MIN_VALUE, Utility.setBit(0, 31), "000...00 set bit 31 to 0 -> 100..00");
141 }
142
143 @Test
144 public void testSignatureToStringWithGenerics() throws Exception {
145
146 assertEquals("java.util.Map<X, java.util.List<Y>>", Utility.signatureToString("Ljava/util/Map<TX;Ljava/util/List<TY;>;>;"), "generic signature");
147 assertEquals("java.util.Set<? extends java.nio.file.OpenOption>", Utility.signatureToString("Ljava/util/Set<+Ljava/nio/file/OpenOption;>;"),
148 "generic signature");
149 assertEquals("java.nio.file.attribute.FileAttribute<?>[]", Utility.signatureToString("[Ljava/nio/file/attribute/FileAttribute<*>;"),
150 "generic signature");
151
152
153 assertEquals(
154 "boofcv.alg.tracker.tld.TldTracker<boofcv.struct.image.ImageGray<boofcv.struct.image.GrayU8>, boofcv.struct.image.GrayI<boofcv.struct.image.GrayU8>>",
155 Utility.signatureToString(
156 "Lboofcv/alg/tracker/tld/TldTracker<Lboofcv/struct/image/ImageGray<Lboofcv/struct/image/GrayU8;>;Lboofcv/struct/image/GrayI<Lboofcv/struct/image/GrayU8;>;>;"),
157 "generic signature");
158 assertEquals("java.util.Map<?, ?>", Utility.signatureToString("Ljava/util/Map<**>;"), "generic signature");
159 assertEquals("com.jme3.util.IntMap<T>.IntMapIterator", Utility.signatureToString("Lcom/jme3/util/IntMap<TT;>.IntMapIterator;"), "generic signature");
160
161
162 assertEquals("<T extends java.lang.Object>(com.google.common.io.ByteProcessor<T>, int)T",
163 Utility.signatureToString("<T:Ljava/lang/Object;>(Lcom/google/common/io/ByteProcessor<TT;>;I)TT;", false), "type parameters signature");
164 assertEquals("<T extends Object>(com.google.common.io.ByteProcessor<T>, int)T",
165 Utility.signatureToString("<T:Ljava/lang/Object;>(Lcom/google/common/io/ByteProcessor<TT;>;I)TT;", true), "type parameters signature");
166 assertEquals("<M extends java.lang.reflect.AccessibleObject & java.lang.reflect.Member>(M)void",
167 Utility.signatureToString("<M:Ljava/lang/reflect/AccessibleObject;:Ljava/lang/reflect/Member;>(TM;)V"), "type parameters signature");
168 assertEquals("<K1 extends K, V1 extends V>()com.google.common.cache.Weigher<K1, V1>",
169 Utility.signatureToString("<K1:TK;V1:TV;>()Lcom/google/common/cache/Weigher<TK1;TV1;>;"), "type parameters signature");
170 assertEquals("<K1 extends K, V1 extends V>(com.google.common.cache.Weigher<? super K1, ? super V1>)com.google.common.cache.CacheBuilder<K1, V1>",
171 Utility.signatureToString("<K1:TK;V1:TV;>(Lcom/google/common/cache/Weigher<-TK1;-TV1;>;)Lcom/google/common/cache/CacheBuilder<TK1;TV1;>;"),
172 "type parameters signature");
173 assertEquals("<N extends java.lang.Object, E extends java.lang.Object> extends java.lang.Object implements com.google.common.graph.Network<N, E>",
174 Utility.signatureToString("<N:Ljava/lang/Object;E:Ljava/lang/Object;>Ljava/lang/Object;Lcom/google/common/graph/Network<TN;TE;>;", false),
175 "class signature");
176 assertEquals("<K extends Object, V extends Object> extends Object",
177 Utility.signatureToString("<K:Ljava/lang/Object;V:Ljava/lang/Object;>Ljava/lang/Object;"), "class signature");
178 }
179 }