Add unit tests for ParseService

Author: ctrueden

src/test/java/org/scijava/parse/ParseServiceTest.java

@@ -0,0 +1,137 @@
+/*
+ * #%L
+ * SciJava Common shared library for SciJava software.
+ * %%
+ * Copyright (C) 2009 - 2016 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.parse;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+
+import java.util.List;
+import java.util.Map;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.scijava.Context;
+
+/**
+ * Tests {@link ParseService}.
+ *
+ * @author Curtis Rueden
+ */
+public class ParseServiceTest {
+
+	private ParseService parser;
+
+	@Before
+	public void setUp() {
+		final Context context = new Context(ParseService.class);
+		parser = context.service(ParseService.class);
+	}
+
+	@After
+	public void tearDown() {
+		parser.getContext().dispose();
+	}
+
+	/** Tests {@link ParseService#parse(String)}. */
+	@Test
+	public void testEmpty() {
+		final Items items = parser.parse("");
+		assertTrue(items.isEmpty());
+		assertTrue(items.isList());
+		assertTrue(items.isMap());
+		assertMapCorrect(items);
+	}
+
+	@Test
+	public void testList() {
+		final Items items = parser.parse("1,2,3,4,5");
+		assertEquals(5, items.size());
+		assertTrue(items.isList());
+		assertFalse(items.isMap());
+		assertSame(1, items.get(0).value());
+		assertSame(2, items.get(1).value());
+		assertSame(3, items.get(2).value());
+		assertSame(4, items.get(3).value());
+		assertSame(5, items.get(4).value());
+		assertNull(items.get(0).name());
+		assertNull(items.get(1).name());
+		assertNull(items.get(2).name());
+		assertNull(items.get(3).name());
+		assertNull(items.get(4).name());
+	}
+
+	@Test
+	public void testMap() {
+		final Items items = parser.parse(
+			"foo='bar', animal='Quick brown fox', colors={'red', 'green', 'blue'}");
+		assertEquals(3, items.size());
+		assertFalse(items.isList());
+		assertTrue(items.isMap());
+		assertEquals("foo", items.get(0).name());
+		assertEquals("bar", items.get(0).value());
+		assertEquals("animal", items.get(1).name());
+		assertEquals("Quick brown fox", items.get(1).value());
+		assertEquals("colors", items.get(2).name());
+		final Object colors = items.get(2).value();
+		assertTrue(colors instanceof List);
+		final List<?> colorsList = (List<?>) colors;
+		assertEquals(3, colorsList.size());
+		assertEquals("red", colorsList.get(0));
+		assertEquals("green", colorsList.get(1));
+		assertEquals("blue", colorsList.get(2));
+
+		assertMapCorrect(items);
+	}
+
+	// -- Helper methods --
+
+	private void assertMapCorrect(final Items items) {
+		final Map<String, Object> map = items.asMap();
+		assertEquals(items.size(), map.size());
+
+		// test that map contents match
+		for (final Item item : items) {
+			assertSame(item.value(), map.get(item.name()));
+		}
+
+		// test that map iteration order is the same
+		int index = 0;
+		for (final Object value : map.values()) {
+			assertSame("" + index + ":", items.get(index++).value(), value);
+		}
+	}
+
+}