From aa853d65192e333965bf663dbea7c61fe2523835 Mon Sep 17 00:00:00 2001
From: cbrun
Date: Tue, 18 Sep 2012 21:34:13 +0200
Subject: We should not use stat similarity to compare URIs

No more using the classical "string similarity" algorithm based on the
dice coefficient to compare URIs.

Introduces a specific implementation comparing URIs or fragments
spliting the path and comparing those.
---
 .../emf/compare/tests/diff/URIDistanceTest.java    | 73 ++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 plugins/org.eclipse.emf.compare.tests/src/org/eclipse/emf/compare/tests/diff/URIDistanceTest.java

(limited to 'plugins/org.eclipse.emf.compare.tests/src/org/eclipse/emf/compare/tests/diff')

diff --git a/plugins/org.eclipse.emf.compare.tests/src/org/eclipse/emf/compare/tests/diff/URIDistanceTest.java b/plugins/org.eclipse.emf.compare.tests/src/org/eclipse/emf/compare/tests/diff/URIDistanceTest.java
new file mode 100644
index 000000000..43051bdcb
--- /dev/null
+++ b/plugins/org.eclipse.emf.compare.tests/src/org/eclipse/emf/compare/tests/diff/URIDistanceTest.java
@@ -0,0 +1,73 @@
+/**
+ * Copyright (c) 2012 Obeo.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Contributors:
+ *     Obeo - initial API and implementation
+ */
+package org.eclipse.emf.compare.tests.diff;
+
+import static org.junit.Assert.assertEquals;
+
+import org.eclipse.emf.compare.match.eobject.URIDistance;
+import org.junit.Test;
+
+public class URIDistanceTest {
+
+	private URIDistance meter = new URIDistance();
+
+	@Test
+	public void sameNumberOfFragments() throws Exception {
+		assertEquals(3, meter.proximity("/root/a/b", "/root/a/b/c"));
+		assertEquals(3, meter.proximity("/root/a/b/", "/root/a/b/c/"));
+		assertEquals(0, meter.proximity("/root/a/b", "/root/a/b"));
+		assertEquals(8, meter.proximity("/root/a/a2/a3", "/root/b/b2/a3"));
+		assertEquals(8, meter.proximity("/root/a/a2/a3", "/root/b/b2/b3"));
+	}
+
+	@Test
+	public void identics() throws Exception {
+		assertEquals(0, meter.proximity("/root/a/b/", "/root/a/b/"));
+		assertEquals(0, meter.proximity("/root/", "/root/"));
+		assertEquals(0, meter.proximity("", ""));
+	}
+
+	@Test
+	public void limitCases() throws Exception {
+		assertEquals(0, meter.proximity("", ""));
+		assertEquals(10, meter.proximity("",
+				"/a/very/long/path/just/to/check/we/wont/ends/up/with/a/weird/thing"));
+	}
+
+	@Test
+	public void completelyDifferent() throws Exception {
+		assertEquals(10, meter.proximity("/c/d/e/", "/root/a/b/"));
+		assertEquals(10, meter.proximity("/c/", "/root/a/b/"));
+		assertEquals(10, meter.proximity("/c/d/e", "/root/"));
+		assertEquals(10, meter.proximity("/c/d/e/f", "/a/b/e/f"));
+		assertEquals(10, meter.proximity("/a", "/b"));
+	}
+
+	@Test
+	public void orderMatters() throws Exception {
+		assertEquals(10, meter.proximity("/c/d/e/f", "/f/d/c/e"));
+	}
+
+	@Test
+	public void idLikeURIs() throws Exception {
+		assertEquals(10, meter.proximity("#131233", "#azeazezae"));
+		assertEquals(3, meter.proximity("/c/d/e/f", "/c/d/e/f?#azeaze"));
+	}
+
+	@Test
+	public void traillingSlashes() throws Exception {
+		assertEquals(3, meter.proximity("/root/a/b/", "/root/a/b/c/"));
+		assertEquals(3, meter.proximity("root/a/b/", "/root/a/b/c/"));
+		assertEquals(3, meter.proximity("/root/a/b/", "/root/a/b/c"));
+		assertEquals(3, meter.proximity("///root/a/b/", "/root/a/b/c"));
+	}
+
+}
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