Refactoring in the unit test utility framework:
* Moved unit test utilities to the onlab-junit package under utils/junit
- ImmutableClassChecker
- TestUtils and TestUtilsTest
* Added/ported unit test utilities from the older code
- UtilityClassChecker and UtilityClassCheckerTest
- ImmutableClassCheckerTest
* Updated/fixed some of the pom.xml files in the context of the
onlab-junit package:
- Added <scope>test</scope>
- Replaced hard-coded "1.0.0-SNAPSHOT" with "${project.version}"
Change-Id: Ie5f51ba401ca1748340f38848ab6bfc251964adc
diff --git a/utils/junit/src/test/java/org/onlab/junit/TestUtilsTest.java b/utils/junit/src/test/java/org/onlab/junit/TestUtilsTest.java
new file mode 100644
index 0000000..c57b351
--- /dev/null
+++ b/utils/junit/src/test/java/org/onlab/junit/TestUtilsTest.java
@@ -0,0 +1,170 @@
+package org.onlab.junit;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.junit.TestUtils.TestUtilsException;
+
+/**
+ * Test and usage examples for TestUtils.
+ */
+public class TestUtilsTest {
+
+ /**
+ * Test data.
+ */
+ private static final class TestClass {
+
+ @SuppressWarnings("unused")
+ private int privateField = 42;
+
+ @SuppressWarnings("unused")
+ protected int protectedField = 2501; // CHECKSTYLE IGNORE THIS LINE
+
+ /**
+ * Protected method with multiple argument.
+ *
+ * @param x simply returns
+ * @param y not used
+ * @return x
+ */
+ @SuppressWarnings("unused")
+ private int privateMethod(Number x, Long y) {
+ return x.intValue();
+ }
+
+ /**
+ * Protected method with no argument.
+ *
+ * @return int
+ */
+ @SuppressWarnings("unused")
+ protected int protectedMethod() {
+ return 42;
+ }
+
+ /**
+ * Method returning array.
+ *
+ * @param ary random array
+ * @return ary
+ */
+ @SuppressWarnings("unused")
+ private int[] arrayReturnMethod(int[] ary) {
+ return ary;
+ }
+
+ /**
+ * Method without return value.
+ *
+ * @param s ignored
+ */
+ @SuppressWarnings("unused")
+ private void voidMethod(String s) {
+ System.out.println(s);
+ }
+ }
+
+ private TestClass test;
+
+ /**
+ * Sets up the test fixture.
+ */
+ @Before
+ public void setUp() {
+ test = new TestClass();
+ }
+
+ /**
+ * Example to access private field.
+ *
+ * @throws TestUtilsException TestUtils error
+ */
+ @Test
+ public void testSetGetPrivateField() throws TestUtilsException {
+
+ assertEquals(42, TestUtils.getField(test, "privateField"));
+ TestUtils.setField(test, "privateField", 0xDEAD);
+ assertEquals(0xDEAD, TestUtils.getField(test, "privateField"));
+ }
+
+ /**
+ * Example to access protected field.
+ *
+ * @throws TestUtilsException TestUtils error
+ */
+ @Test
+ public void testSetGetProtectedField() throws TestUtilsException {
+
+ assertEquals(2501, TestUtils.getField(test, "protectedField"));
+ TestUtils.setField(test, "protectedField", 0xBEEF);
+ assertEquals(0xBEEF, TestUtils.getField(test, "protectedField"));
+ }
+
+ /**
+ * Example to call private method and multiple parameters.
+ * <p/>
+ * It also illustrates that paramTypes must match declared type,
+ * not the runtime types of arguments.
+ *
+ * @throws TestUtilsException TestUtils error
+ */
+ @Test
+ public void testCallPrivateMethod() throws TestUtilsException {
+
+ int result = TestUtils.callMethod(test, "privateMethod",
+ new Class<?>[] {Number.class, Long.class},
+ Long.valueOf(42), Long.valueOf(32));
+ assertEquals(42, result);
+ }
+
+ /**
+ * Example to call protected method and no parameters.
+ *
+ * @throws TestUtilsException TestUtils error
+ */
+ @Test
+ public void testCallProtectedMethod() throws TestUtilsException {
+
+ int result = TestUtils.callMethod(test, "protectedMethod",
+ new Class<?>[] {});
+ assertEquals(42, result);
+ }
+
+ /**
+ * Example to call method returning array.
+ * <p/>
+ * Note: It is not required to receive as Object.
+ * Following is just verifying it is not Boxed arrays.
+ *
+ * @throws TestUtilsException TestUtils error
+ */
+ @Test
+ public void testCallArrayReturnMethod() throws TestUtilsException {
+
+ int[] array = {1, 2, 3};
+ Object aryResult = TestUtils.callMethod(test, "arrayReturnMethod",
+ new Class<?>[] {int[].class}, array);
+ assertEquals(int[].class, aryResult.getClass());
+ assertArrayEquals(array, (int[]) aryResult);
+ }
+
+
+ /**
+ * Example to call void returning method.
+ * <p/>
+ * Note: Return value will be null for void methods.
+ *
+ * @throws TestUtilsException TestUtils error
+ */
+ @Test
+ public void testCallVoidReturnMethod() throws TestUtilsException {
+
+ Object voidResult = TestUtils.callMethod(test, "voidMethod",
+ String.class, "foobar");
+ assertNull(voidResult);
+ }
+}