Add unit test for ImageLinkFilter.

diff --git a/src/test/java/net/pterodactylus/sone/template/ImageLinkFilterTest.java b/src/test/java/net/pterodactylus/sone/template/ImageLinkFilterTest.java
new file mode 100644 (file)
index 0000000..b2cdf13
--- /dev/null
+++ b/src/test/java/net/pterodactylus/sone/template/ImageLinkFilterTest.java
@@ -0,0 +1,135 @@
+/*
+ * Sone - ImageLinkFilterTest.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.sone.template;
+
+import static com.google.common.base.Optional.of;
+import static net.pterodactylus.util.template.TemplateContextFactory.getInstance;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.nullValue;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.util.Collections;
+
+import net.pterodactylus.sone.data.Image;
+import net.pterodactylus.sone.data.Mocks;
+import net.pterodactylus.util.template.HtmlFilter;
+import net.pterodactylus.util.template.TemplateContextFactory;
+
+import com.google.common.collect.ImmutableMap;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * Unit test for {@link ImageLinkFilter}.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class ImageLinkFilterTest {
+
+       private final Mocks mocks = new Mocks();
+       private final TemplateContextFactory templateContextFactory = getInstance();
+       private final ImageLinkFilter imageLinkFilter = new ImageLinkFilter(mocks.core, templateContextFactory);
+
+       @Before
+       public void setup() {
+               templateContextFactory.addFilter("css", new CssClassNameFilter());
+               templateContextFactory.addFilter("html", new HtmlFilter());
+       }
+
+       @Test
+       public void nullImageReturnsANullLink() {
+               assertThat(imageLinkFilter.format(null, null, Collections.<String, Object>emptyMap()), nullValue());
+       }
+
+       @Test
+       public void linkForAnImageWithoutAdditionalParametersIsGenerated() {
+               Image image = createImage("ImageId", "KSK@foo.png", "Title", "Description", 640, 480);
+               String link = (String) imageLinkFilter.format(null, image, Collections.<String, Object>emptyMap());
+               assertThat(link, is("<img src=\"/KSK@foo.png?forcedownload=true\" alt=\"Description\" title=\"Title\" width=\"640\" height=\"480\" style=\"position: relative;\"/>"));
+       }
+
+       @Test
+       public void overridingTheTitleChangesBothAltAndTitleAttributes() {
+               Image image = createImage("ImageId", "KSK@foo.png", "Title", "Description", 640, 480);
+               String link = (String) imageLinkFilter.format(null, image, ImmutableMap.<String, Object>of("title", "Other Title"));
+               assertThat(link, is("<img src=\"/KSK@foo.png?forcedownload=true\" alt=\"Other Title\" title=\"Other Title\" width=\"640\" height=\"480\" style=\"position: relative;\"/>"));
+       }
+
+       @Test
+       public void classAttributeIsFilteredAndSet() {
+               Image image = createImage("ImageId", "KSK@foo.png", "Title", "Description", 640, 480);
+               String link = (String) imageLinkFilter.format(null, image, ImmutableMap.<String, Object>of("class", "some class"));
+               assertThat(link, is("<img class=\"some_class\" src=\"/KSK@foo.png?forcedownload=true\" alt=\"Description\" title=\"Title\" width=\"640\" height=\"480\" style=\"position: relative;\"/>"));
+       }
+
+       @Test
+       public void resizingImageToHalfItsSize() {
+               Image image = createImage("ImageId", "KSK@foo.png", "Title", "Description", 640, 480);
+               String link = (String) imageLinkFilter.format(null, image, ImmutableMap.<String, Object>of("max-width", "320", "max-height", "320"));
+               assertThat(link, is("<img src=\"/KSK@foo.png?forcedownload=true\" alt=\"Description\" title=\"Title\" width=\"320\" height=\"240\" style=\"position: relative;\"/>"));
+       }
+
+       @Test
+       public void enlargingAnImage() {
+               Image image = createImage("ImageId", "KSK@foo.png", "Title", "Description", 640, 480);
+               String link = (String) imageLinkFilter.format(null, image, ImmutableMap.<String, Object>of("mode", "enlarge", "max-width", "960", "max-height", "960"));
+               assertThat(link, is("<img src=\"/KSK@foo.png?forcedownload=true\" alt=\"Description\" title=\"Title\" width=\"1280\" height=\"960\" style=\"position: relative;top: 0px;left: -160px;\"/>"));
+       }
+
+       @Test
+       public void notInsertedImage() {
+               Image image = createNotInsertedImage("ImageId", "KSK@foo.png", "Title", "Description", 640, 480);
+               String link = (String) imageLinkFilter.format(null, image, Collections.<String, Object>emptyMap());
+               assertThat(link, is("<img src=\"getImage.html?image=ImageId\" alt=\"Description\" title=\"Title\" width=\"640\" height=\"480\" style=\"position: relative;\"/>"));
+       }
+
+       @Test
+       public void creatingALinkFromAnImageId() {
+               Image image = createImage("ImageId", "KSK@foo.png", "Title", "Description", 640, 480);
+               when(mocks.core.getImage(eq("ImageId"))).thenReturn(of(image));
+               String link = (String) imageLinkFilter.format(null, image.getId(), Collections.<String, Object>emptyMap());
+               assertThat(link, is("<img src=\"/KSK@foo.png?forcedownload=true\" alt=\"Description\" title=\"Title\" width=\"640\" height=\"480\" style=\"position: relative;\"/>"));
+       }
+
+       private Image createNotInsertedImage(String id, String key, String title, String description, int width, int height) {
+               Image image = createBasicImage(id, key, title, description, width, height);
+               when(image.isInserted()).thenReturn(false);
+               return image;
+       }
+
+       private Image createImage(String id, String key, String title, String description, int width, int height) {
+               Image image = createBasicImage(id, key, title, description, width, height);
+               when(image.isInserted()).thenReturn(true);
+               return image;
+       }
+
+       private Image createBasicImage(String id, String key, String title, String description, int width, int height) {
+               Image image = mock(Image.class);
+               when(image.getId()).thenReturn(id);
+               when(image.getKey()).thenReturn(key);
+               when(image.getTitle()).thenReturn(title);
+               when(image.getDescription()).thenReturn(description);
+               when(image.getWidth()).thenReturn(width);
+               when(image.getHeight()).thenReturn(height);
+               return image;
+       }
+
+}