Add writer that squelches duplicate lines.

[xudocci.git] / src / test / java / net / pterodactylus / xdcc / ui / stdin / DuplicateLineSuppressingWriterTest.java

diff --git a/src/test/java/net/pterodactylus/xdcc/ui/stdin/DuplicateLineSuppressingWriterTest.java b/src/test/java/net/pterodactylus/xdcc/ui/stdin/DuplicateLineSuppressingWriterTest.java
new file mode 100644 (file)
index 0000000..3465abb
--- /dev/null
+++ b/src/test/java/net/pterodactylus/xdcc/ui/stdin/DuplicateLineSuppressingWriterTest.java
@@ -0,0 +1,69 @@
+/*
+ * XdccDownloader - DuplicateLineSuppressingWriterTest.java - Copyright © 2013 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.xdcc.ui.stdin;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+
+import java.io.IOException;
+import java.io.StringWriter;
+
+import org.junit.Test;
+
+/**
+ * Unit test for {@link DuplicateLineSuppressingWriter}.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class DuplicateLineSuppressingWriterTest {
+
+       private final StringWriter stringWriter = new StringWriter();
+       private final DuplicateLineSuppressingWriter duplicateLineSuppressingWriter = new DuplicateLineSuppressingWriter(stringWriter);
+
+       @Test
+       public void theFirstLineIsWrittenImmediately() throws IOException {
+               duplicateLineSuppressingWriter.write("First Line.\n");
+               assertThat(stringWriter.toString(), is("First Line.\n"));
+       }
+
+       @Test
+       public void twoDifferentLinesAreWrittenOut() throws IOException {
+               duplicateLineSuppressingWriter.write("First Line.\n");
+               duplicateLineSuppressingWriter.write("Second Line.\n");
+               assertThat(stringWriter.toString(), is("First Line.\nSecond Line.\n"));
+       }
+
+       @Test
+       public void twoEqualLinesAreOnlyWrittenOnce() throws IOException {
+               duplicateLineSuppressingWriter.write("First Line.\n");
+               duplicateLineSuppressingWriter.write("First Line.\n");
+               assertThat(stringWriter.toString(), is("First Line.\n"));
+       }
+
+       @Test
+       public void multipleLinesAreSuppressed() throws IOException {
+               duplicateLineSuppressingWriter.write("First Line.\n");
+               duplicateLineSuppressingWriter.write("Second Line.\n");
+               duplicateLineSuppressingWriter.write("Second Line.\n");
+               duplicateLineSuppressingWriter.write("Second Line.\n");
+               duplicateLineSuppressingWriter.write("First Line.\n");
+               duplicateLineSuppressingWriter.write("First Line.\n");
+               assertThat(stringWriter.toString(), is("First Line.\nSecond Line.\nFirst Line.\n"));
+       }
+
+}