1 files changed, 133 insertions, 0 deletions
diff --git a/asm-commons/src/test/java/org/objectweb/asm/commons/MethodTest.java b/asm-commons/src/test/java/org/objectweb/asm/commons/MethodTest.java
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+++ b/asm-commons/src/test/java/org/objectweb/asm/commons/MethodTest.java
@@ -0,0 +1,133 @@
+// ASM: a very small and fast Java bytecode manipulation framework
+// Copyright (c) 2000-2011 INRIA, France Telecom
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 3. Neither the name of the copyright holders nor the names of its
+//    contributors may be used to endorse or promote products derived from
+//    this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+// THE POSSIBILITY OF SUCH DAMAGE.
+package org.objectweb.asm.commons;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.api.Test;
+import org.objectweb.asm.Type;
+
+/**
+ * Unit tests for {@link Method}.
+ *
+ * @author Eric Bruneton
+ */
+class MethodTest {
+
+  @Test
+  void testConstructor_fromDescriptor() {
+    Method method = new Method("name", "(I)J");
+
+    assertEquals("name", method.getName());
+    assertEquals("(I)J", method.getDescriptor());
+    assertEquals(Type.LONG_TYPE, method.getReturnType());
+    assertArrayEquals(new Type[] {Type.INT_TYPE}, method.getArgumentTypes());
+    assertEquals("name(I)J", method.toString());
+  }
+
+  @Test
+  void testConstructor_fromTypes() {
+    Method method = new Method("name", Type.LONG_TYPE, new Type[] {Type.INT_TYPE});
+
+    assertEquals("name", method.getName());
+    assertEquals("(I)J", method.getDescriptor());
+    assertEquals(Type.LONG_TYPE, method.getReturnType());
+    assertArrayEquals(new Type[] {Type.INT_TYPE}, method.getArgumentTypes());
+    assertEquals("name(I)J", method.toString());
+  }
+
+  @Test
+  void testGetMethod_fromMethodObject() throws ReflectiveOperationException {
+    Method method = Method.getMethod(Object.class.getMethod("equals", Object.class));
+
+    assertEquals("equals", method.getName());
+    assertEquals("(Ljava/lang/Object;)Z", method.getDescriptor());
+  }
+
+  @Test
+  void testGetMethod_fromConstructorObject() throws ReflectiveOperationException {
+    Method method = Method.getMethod(Object.class.getConstructor());
+
+    assertEquals("<init>", method.getName());
+    assertEquals("()V", method.getDescriptor());
+  }
+
+  @Test
+  void testGetMethod_fromDescriptor() {
+    Method method =
+        Method.getMethod(
+            "boolean name(byte, char, short, int, float, long, double, pkg.Class, pkg.Class[])");
+
+    assertEquals("name", method.getName());
+    assertEquals("(BCSIFJDLpkg/Class;[Lpkg/Class;)Z", method.getDescriptor());
+  }
+
+  @Test
+  void testGetMethod_fromInvalidDescriptor() {
+    assertThrows(IllegalArgumentException.class, () -> Method.getMethod("name()"));
+    assertThrows(IllegalArgumentException.class, () -> Method.getMethod("void name"));
+    assertThrows(IllegalArgumentException.class, () -> Method.getMethod("void name(]"));
+  }
+
+  @Test
+  void testGetMethod_withDefaultPackage() {
+    Method withoutDefaultPackage =
+        Method.getMethod("void name(Object)", /* defaultPackage= */ false);
+    Method withDefaultPackage = Method.getMethod("void name(Object)", /* defaultPackage= */ true);
+
+    assertEquals("(Ljava/lang/Object;)V", withoutDefaultPackage.getDescriptor());
+    assertEquals("(LObject;)V", withDefaultPackage.getDescriptor());
+  }
+
+  @Test
+  void testEquals() {
+    Method nullMethod = null;
+
+    boolean equalsNull = new Method("name", "()V").equals(nullMethod);
+    boolean equalsMethodWithDifferentName =
+        new Method("name", "()V").equals(new Method("other", "()V"));
+    boolean equalsMethodWithDifferentDescriptor =
+        new Method("name", "()V").equals(new Method("name", "(I)J"));
+    boolean equalsSame = new Method("name", "()V").equals(Method.getMethod("void name()"));
+
+    assertFalse(equalsNull);
+    assertFalse(equalsMethodWithDifferentName);
+    assertFalse(equalsMethodWithDifferentDescriptor);
+    assertTrue(equalsSame);
+  }
+
+  @Test
+  void testHashCode() {
+    assertNotEquals(0, new Method("name", "()V").hashCode());
+  }
+}