Unit test for IRC Reader

Change-Id: Ib2b5179775c4d6580382691d77fbd3318da28d16
Reviewed-on: http://gerrit.dmdirc.com/1776
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Greg Holmes <greg@dmdirc.com>

test/com/dmdirc/parser/irc/IRCReaderTest.java

@@ -0,0 +1,195 @@
+/*
+ * Copyright (c) 2006-2011 Chris Smith, Shane Mc Cormack, Gregory Holmes
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.dmdirc.parser.irc;
+
+import com.dmdirc.parser.irc.IRCReader.ReadLine;
+import com.dmdirc.parser.interfaces.Encoder;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.junit.Test;
+import static org.junit.Assert.*;
+import static org.mockito.Mockito.*;
+
+public class IRCReaderTest {
+
+    /** Reads and verifies a single line. */
+    @Test
+    public void testReadLine() throws IOException {
+        final InputStream stream = mock(InputStream.class);
+        final Encoder encoder = mock(Encoder.class);
+
+        when(stream.read()).thenReturn((int) 't', (int) 'e', (int) 's',
+                (int) 't', (int) '\r', (int) '\n');
+
+        final IRCReader reader = new IRCReader(stream, encoder);
+        final ReadLine line = reader.readLine();
+
+        assertEquals("test", line.getLine());
+    }
+
+    /** Reads and verifies a single line with only a trailing LF. */
+    @Test
+    public void testReadLineWithOnlyLF() throws IOException {
+        final InputStream stream = mock(InputStream.class);
+        final Encoder encoder = mock(Encoder.class);
+
+        when(stream.read()).thenReturn((int) 't', (int) 'e', (int) 's',
+                (int) 't', (int) '\n');
+
+        final IRCReader reader = new IRCReader(stream, encoder);
+        final ReadLine line = reader.readLine();
+
+        assertEquals("test", line.getLine());
+    }
+
+    /** Reads and verifies a single line with a trailing parameter. */
+    @Test
+    public void testReadLineWithParameter() throws IOException {
+        final InputStream stream = mock(InputStream.class);
+        final Encoder encoder = mock(Encoder.class);
+
+        when(stream.read()).thenReturn((int) 't', (int) 'e', (int) ' ',
+                (int) 't', (int) ' ', (int) ':', (int) 'f', (int) 'o',
+                (int) 'o', (int) '\r', (int) '\n');
+        when(encoder.encode((String) isNull(), (String) isNull(),
+                (byte[]) anyObject(), anyInt(), eq(3)))
+                .thenReturn("encoded");
+
+        final IRCReader reader = new IRCReader(stream, encoder);
+        final ReadLine line = reader.readLine();
+
+        assertArrayEquals(new String[]{"te", "t", "encoded",},
+                line.getTokens());
+    }
+
+    /** Verifies that a source is extracted properly. */
+    @Test
+    public void testGetSource() throws IOException {
+        final InputStream stream = mock(InputStream.class);
+        final Encoder encoder = mock(Encoder.class);
+
+        when(stream.read()).thenReturn((int) ':', (int) 's', (int) 'r',
+                (int) 'c', (int) ' ', (int) 'x', (int) ' ', (int) ':',
+                (int) 'o', (int) '\r', (int) '\n');
+
+        new IRCReader(stream, encoder).readLine();
+
+        verify(encoder).encode(eq("src"), anyString(),
+                (byte[]) anyObject(), anyInt(), anyInt());
+    }
+
+    /** Verifies that no source is passed if the source is empty. */
+    @Test
+    public void testGetEmptySource() throws IOException {
+        final InputStream stream = mock(InputStream.class);
+        final Encoder encoder = mock(Encoder.class);
+
+        when(stream.read()).thenReturn((int) ':', (int) ' ', (int) 'r',
+                (int) 'c', (int) ' ', (int) 'x', (int) ' ', (int) ':',
+                (int) 'o', (int) '\r', (int) '\n');
+
+        new IRCReader(stream, encoder).readLine();
+
+        verify(encoder).encode((String) isNull(), anyString(),
+                (byte[]) anyObject(), anyInt(), anyInt());
+    }
+
+    /** Verifies that a destination is extracted properly. */
+    @Test
+    public void testGetDestination() throws IOException {
+        final InputStream stream = mock(InputStream.class);
+        final Encoder encoder = mock(Encoder.class);
+
+        when(stream.read()).thenReturn((int) ':', (int) 's', (int) 'r',
+                (int) 'c', (int) ' ', (int) 'x', (int) ' ', (int) 'y',
+                (int) ' ', (int) ':', (int) 'z', (int) '\r', (int) '\n');
+
+        new IRCReader(stream, encoder).readLine();
+
+        verify(encoder).encode(anyString(), eq("y"), (byte[]) anyObject(),
+                anyInt(), anyInt());
+    }
+
+    /** Verifies that no destination is extracted if there's no source. */
+    @Test
+    public void testGetDestinationNoSource() throws IOException {
+        final InputStream stream = mock(InputStream.class);
+        final Encoder encoder = mock(Encoder.class);
+
+        when(stream.read()).thenReturn((int) '_', (int) 's', (int) 'r',
+                (int) 'c', (int) ' ', (int) 'x', (int) ' ', (int) 'y',
+                (int) ' ', (int) ':', (int) 'z', (int) '\r', (int) '\n');
+
+        new IRCReader(stream, encoder).readLine();
+
+        verify(encoder).encode(anyString(), (String) isNull(),
+                (byte[]) anyObject(), anyInt(), anyInt());
+    }
+
+    /** Verifies that no destination is extracted if there are too few args. */
+    @Test
+    public void testGetDestinationTooShort() throws IOException {
+        final InputStream stream = mock(InputStream.class);
+        final Encoder encoder = mock(Encoder.class);
+
+        when(stream.read()).thenReturn((int) ':', (int) 's', (int) 'r',
+                (int) 'c', (int) ' ', (int) 'x', (int) ' ', (int) ':',
+                (int) 'a', (int) 'b', (int) 'z', (int) '\r', (int) '\n');
+
+        new IRCReader(stream, encoder).readLine();
+
+        verify(encoder).encode(anyString(), (String) isNull(),
+                (byte[]) anyObject(), anyInt(), anyInt());
+    }
+
+    /** Verifies that a numeric's destination is extracted properly. */
+    @Test
+    public void testGetDestinationWithNumeric() throws IOException {
+        final InputStream stream = mock(InputStream.class);
+        final Encoder encoder = mock(Encoder.class);
+
+        when(stream.read()).thenReturn((int) ':', (int) 's', (int) 'r',
+                (int) 'c', (int) ' ', (int) '1', (int) ' ', (int) 'x',
+                (int) ' ', (int) 'y', (int) ' ', (int) 'z', (int) ' ',
+                (int) ':', (int) 'x', (int) '\r', (int) '\n');
+
+        new IRCReader(stream, encoder).readLine();
+
+        verify(encoder).encode(anyString(), eq("y"),
+                (byte[]) anyObject(), anyInt(), anyInt());
+    }
+
+    /** Verifies that the close call is proxied to the stream. */
+    @Test
+    public void testClose() throws IOException {
+        final InputStream stream = mock(InputStream.class);
+        final Encoder encoder = mock(Encoder.class);
+
+        new IRCReader(stream, encoder).close();
+
+        verify(stream).close();
+    }
+
+}