Add a unit test for the new ThreadService#getParent(Thread) method

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

src/test/java/org/scijava/thread/ThreadServiceTest.java

@@ -0,0 +1,75 @@
+/*
+ * #%L
+ * SciJava Common shared library for SciJava software.
+ * %%
+ * Copyright (C) 2009 - 2014 Board of Regents of the University of
+ * Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
+ * Institute of Molecular Cell Biology and Genetics.
+ * %%
+ * 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.
+ * 
+ * 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 HOLDERS 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.
+ * #L%
+ */
+
+package org.scijava.thread;
+
+import static org.junit.Assert.assertSame;
+
+import org.junit.Test;
+import org.scijava.Context;
+
+/**
+ * Tests the {@link ThreadService}.
+ * 
+ * @author Johannes Schindelin
+ */
+public class ThreadServiceTest {
+
+	/**
+	 * Tests {@link ThreadService#getParent(Thread)} when called after
+	 * {@link ThreadService#invoke(Runnable)}.
+	 */
+	@Test
+	public void testGetParent() throws Exception {
+		final Context context = new Context(ThreadService.class);
+		final ThreadService threadService = context.getService(ThreadService.class);
+		final AskForParent ask = new AskForParent(threadService);
+		threadService.invoke(ask);
+		assertSame(Thread.currentThread(), ask.parent);
+		context.dispose();
+	}
+
+	private static class AskForParent implements Runnable {
+		private final ThreadService threadService;
+
+		private Thread parent;
+
+		public AskForParent(final ThreadService threadService) {
+			this.threadService = threadService;
+		}
+
+		@Override
+		public void run() {
+			parent = threadService.getParent(null);
+		}
+	}
+
+}