Add --match option for `jgit describe` to CLI

This adds --match option for glob(7) matchers on git tags to jgit
describe in CLI.

Bug: 518377
Change-Id: I745988d565dd4391e8b3e5a91bbfbae575333819
Signed-off-by: Oliver Lockwood <oliver.lockwood@cantab.net>

1 files changed, 49 insertions, 3 deletions

diff --git a/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/DescribeTest.java b/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/DescribeTest.java
index 086e72e9a4..e97762d8d1 100644
--- a/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/DescribeTest.java
+++ b/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/DescribeTest.java
@@ -46,6 +46,7 @@ import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 import java.util.Arrays;
 
@@ -71,6 +72,12 @@ public class DescribeTest extends CLIRepositoryTestCase {
 		git.tag().setName("v1.0").call();
 	}
 
+	private void secondCommit() throws Exception {
+		writeTrashFile("greeting", "Hello, world!");
+		git.add().addFilepattern("greeting").call();
+		git.commit().setMessage("2nd commit").call();
+	}
+
 	@Test
 	public void testNoHead() throws Exception {
 		assertEquals(CLIText.fatalError(CLIText.get().noNamesFound),
@@ -94,9 +101,7 @@ public class DescribeTest extends CLIRepositoryTestCase {
 	@Test
 	public void testDescribeCommit() throws Exception {
 		initialCommitAndTag();
-		writeTrashFile("greeting", "Hello, world!");
-		git.add().addFilepattern("greeting").call();
-		git.commit().setMessage("2nd commit").call();
+		secondCommit();
 		assertArrayEquals(new String[] { "v1.0-1-g56f6ceb", "" },
 				execute("git describe"));
 	}
@@ -109,6 +114,47 @@ public class DescribeTest extends CLIRepositoryTestCase {
 	}
 
 	@Test
+	public void testDescribeCommitMatch() throws Exception {
+		initialCommitAndTag();
+		secondCommit();
+		assertArrayEquals(new String[] { "v1.0-1-g56f6ceb", "" },
+				execute("git describe --match v1.*"));
+	}
+
+	@Test
+	public void testDescribeCommitMatch2() throws Exception {
+		initialCommitAndTag();
+		secondCommit();
+		git.tag().setName("v2.0").call();
+		assertArrayEquals(new String[] { "v1.0-1-g56f6ceb", "" },
+				execute("git describe --match v1.*"));
+	}
+
+	@Test
+	public void testDescribeCommitMultiMatch() throws Exception {
+		initialCommitAndTag();
+		secondCommit();
+		git.tag().setName("v2.0.0").call();
+		git.tag().setName("v2.1.1").call();
+		assertArrayEquals("git yields v2.0.0", new String[] { "v2.0.0", "" },
+				execute("git describe --match v2.0* --match v2.1.*"));
+	}
+
+	@Test
+	public void testDescribeCommitNoMatch() throws Exception {
+		initialCommitAndTag();
+		writeTrashFile("greeting", "Hello, world!");
+		secondCommit();
+		try {
+			execute("git describe --match 1.*");
+			fail("git describe should not find any tag matching 1.*");
+		} catch (Die e) {
+			assertEquals("No names found, cannot describe anything.",
+					e.getMessage());
+		}
+	}
+
+	@Test
 	public void testHelpArgumentBeforeUnknown() throws Exception {
 		String[] output = execute("git describe -h -XYZ");
 		String all = Arrays.toString(output);