Simplify pgm tests: allow varargs and trim output for toString()

Change-Id: Ia5bcd9e560b90cf872fef75c2800c889ef1cc85a
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>

org.eclipse.jgit.pgm.test/src/org/eclipse/jgit/lib/CLIRepositoryTestCase.java

@@ -223,19 +223,23 @@ public class CLIRepositoryTestCase extends LocalDiskRepositoryTestCase {
 		assertEquals(toString(expected), toString(actual));
 	}
 
-	public static String toString(String[] lines) {
+	public static String toString(String... lines) {
 		return toString(Arrays.asList(lines));
 	}
 
 	public static String toString(List<String> lines) {
 		StringBuilder b = new StringBuilder();
 		for (String s : lines) {
+			// trim indentation, to simplify tests
+			s = s.trim();
 			if (s != null && !s.isEmpty()) {
 				b.append(s);
-				if (!s.endsWith("\n")) {
 				b.append('\n');
 			}
 		}
+		// delete last line break to allow simpler tests with one line compare
+		if (b.length() > 0 && b.charAt(b.length() - 1) == '\n') {
+			b.deleteCharAt(b.length() - 1);
 		}
 		return b.toString();
 	}

org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/CommitTest.java

@@ -42,7 +42,7 @@
  */
 package org.eclipse.jgit.pgm;
 
-import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
 
 import org.eclipse.jgit.lib.CLIRepositoryTestCase;
 import org.junit.Test;
@@ -54,26 +54,27 @@ public class CommitTest extends CLIRepositoryTestCase {
 		writeTrashFile("a", "a");
 		writeTrashFile("b", "a");
 		String result = toString(execute("git add a"));
-		assertTrue("Unexpected output: " + result, result.isEmpty());
+		assertEquals("", result);
 
 		result = toString(execute("git status -- a"));
-		assertTrue("Unexpected output: " + result,
-				result.contains("new file:   a"));
+		assertEquals(toString("On branch master", "Changes to be committed:",
+				"new file:   a"), result);
 
 		result = toString(execute("git status -- b"));
-		assertTrue("Unexpected output: " + result,
-				result.trim().contains("Untracked files:\n	b"));
+		assertEquals(toString("On branch master", "Untracked files:", "b"),
+				result);
 
 		result = toString(execute("git commit a -m 'added a'"));
-		assertTrue("Unexpected output: " + result, result.contains("added a"));
+		assertEquals(
+				"[master 8cb3ef7e5171aaee1792df6302a5a0cd30425f7a] added a",
+				result);
 
 		result = toString(execute("git status -- a"));
-		assertTrue("Unexpected output: " + result,
-				result.trim().equals("On branch master"));
+		assertEquals("On branch master", result);
 
 		result = toString(execute("git status -- b"));
-		assertTrue("Unexpected output: " + result,
-				result.trim().contains("Untracked files:\n	b"));
+		assertEquals(toString("On branch master", "Untracked files:", "b"),
+				result);
 	}
 
 	@Test
@@ -81,21 +82,19 @@ public class CommitTest extends CLIRepositoryTestCase {
 		writeTrashFile("a", "a");
 		writeTrashFile("b", "a");
 		String result = toString(execute("git add a b"));
-		assertTrue("Unexpected output: " + result, result.isEmpty());
+		assertEquals("", result);
 
 		result = toString(execute("git status -- a b"));
-		assertTrue("Unexpected output: " + result,
-				result.contains("new file:   a"));
-		assertTrue("Unexpected output: " + result,
-				result.contains("new file:   b"));
+		assertEquals(toString("On branch master", "Changes to be committed:",
+				"new file:   a", "new file:   b"), result);
 
 		result = toString(execute("git commit -m 'added a b'"));
-		assertTrue("Unexpected output: " + result,
-				result.contains("added a b"));
+		assertEquals(
+				"[master 3c93fa8e3a28ee26690498be78016edcb3a38c73] added a b",
+				result);
 
 		result = toString(execute("git status -- a b"));
-		assertTrue("Unexpected output: " + result,
-				result.trim().equals("On branch master"));
+		assertEquals("On branch master", result);
 	}
 
 }