Add root directories option tests.

jplag/src/test/java/de/jplag/cli/OldNewRootDirectoriesArgumentTest.java

@@ -0,0 +1,55 @@
+package de.jplag.cli;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+public class OldNewRootDirectoriesArgumentTest extends CommandLineInterfaceTest {
+    @Test
+    public void testNoRootDirectories() {
+        buildOptionsFromCLI();
+
+        assertEquals(0, options.getPlagiarismCheckRootDirectoryNames().size());
+        assertEquals(0, options.getPriorSubmissionsDirectoryNames().size());
+    }
+
+    @Test
+    public void testTwoRootDirectoryArguments() {
+        buildOptionsFromCLI("root1", "root2");
+
+        assertEquals(2, options.getPlagiarismCheckRootDirectoryNames().size());
+        assertEquals(0, options.getPriorSubmissionsDirectoryNames().size());
+    }
+
+    @Test
+    public void testNewOption() {
+        buildOptionsFromCLI("-new", "root1", "root2");
+
+        assertEquals(2, options.getPlagiarismCheckRootDirectoryNames().size());
+        assertEquals(0, options.getPriorSubmissionsDirectoryNames().size());
+    }
+
+    @Test
+    public void testDoubleNewOption() {
+        buildOptionsFromCLI("-new", "root1", "-new", "root2");
+
+        assertEquals(2, options.getPlagiarismCheckRootDirectoryNames().size());
+        assertEquals(0, options.getPriorSubmissionsDirectoryNames().size());
+    }
+
+    @Test
+    public void testOldOption() {
+        buildOptionsFromCLI("-old", "root1");
+
+        assertEquals(0, options.getPlagiarismCheckRootDirectoryNames().size());
+        assertEquals(1, options.getPriorSubmissionsDirectoryNames().size());
+    }
+
+    @Test
+    public void testNewAndOldOption() {
+        buildOptionsFromCLI("-new", "root1", "-old", "root2");
+
+        assertEquals(1, options.getPlagiarismCheckRootDirectoryNames().size());
+        assertEquals(1, options.getPriorSubmissionsDirectoryNames().size());
+    }
+}