--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/truffle/com.oracle.truffle.api.test/src/com/oracle/truffle/api/source/LineLocationTest.java	Mon Dec 07 12:51:32 2015 -0800
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.truffle.api.source;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotNull;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+
+import org.junit.Test;
+
+public class LineLocationTest {
+
+    @Test
+    public void lineLocationLiteralTest() {
+        final Source source = Source.fromText("line 1\nline2\n", "lineLocationTest");
+        final LineLocation line1 = source.createLineLocation(1);
+        final LineLocation line2 = source.createLineLocation(2);
+        assertEquals(line1.getLineNumber(), 1);
+        assertNotEquals(line1, line2);
+        assertEquals(line1, source.createLineLocation(1));
+        assertEquals(line1.compareTo(line2), -1);
+        assertEquals(line1.compareTo(source.createLineLocation(1)), 0);
+    }
+
+    @Test
+    public void lineLocationPathTest() throws IOException {
+        final Source s1 = createSourceFile("Hello1 line 1\nline2\n", "LineLocation1");
+        final Source s2 = createSourceFile("Hello2 line 1\nline2\n", "LineLocation2");
+        assertNotNull(s1);
+        assertNotNull(s2);
+        final LineLocation s1l1 = s1.createLineLocation(1);
+        final LineLocation s1l2 = s1.createLineLocation(2);
+        final LineLocation s2l1 = s2.createLineLocation(1);
+        assertEquals(s1l1.compareTo(s1l2), -1);
+        assertEquals(s1l1.compareTo(s2l1), -1);
+        assertEquals(s1l2.compareTo(s2l1), -1);
+    }
+
+    @Test
+    public void lineLocationMixedTest() throws IOException {
+        final Source s1 = createSourceFile("same contents", "Testfile");
+        final Source s2 = Source.fromText("same contents", "literal test source");
+        final LineLocation s1l1 = s1.createLineLocation(1);
+        final LineLocation s2l1 = s2.createLineLocation(1);
+        assertEquals(s1l1.compareTo(s2l1), 0);
+        assertEquals(s2l1.compareTo(s1l1), 0);
+    }
+
+    private static Source createSourceFile(String contents, String name) throws IOException {
+        final File file = File.createTempFile(name, ".txt");
+        try (FileWriter w = new FileWriter(file)) {
+            w.write(contents);
+        }
+        file.deleteOnExit();
+        return Source.fromFileName(file.getAbsolutePath());
+    }
+}

--- a/truffle/com.oracle.truffle.api.test/src/com/oracle/truffle/api/source/SourceTest.java	Mon Dec 07 12:49:17 2015 -0800
+++ b/truffle/com.oracle.truffle.api.test/src/com/oracle/truffle/api/source/SourceTest.java	Mon Dec 07 12:51:32 2015 -0800
@@ -138,4 +138,19 @@
         assertNotEquals("But different type", s1.getMimeType(), s2.getMimeType());
         assertNotEquals("So they are different", s1, s2);
     }
+
+    @Test
+    public void literalSources() throws IOException {
+        final String code = "test code";
+        final String description = "test description";
+        final Source literal = Source.fromText(code, description);
+        assertEquals(literal.getName(), description);
+        assertEquals(literal.getShortName(), description);
+        assertEquals(literal.getCode(), code);
+        assertNull(literal.getPath());
+        assertNull(literal.getURL());
+        final char[] buffer = new char[code.length()];
+        assertEquals(literal.getReader().read(buffer), code.length());
+        assertEquals(new String(buffer), code);
+    }
 }