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Additional IntervalSet unit test (catches underlying cause of #153)

This commit is contained in:
Sam Harwell 2013-02-05 13:09:14 -06:00
parent 59f7467d68
commit aae042c6db
1 changed files with 15 additions and 0 deletions
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15
tool/test/org/antlr/v4/test/TestIntervalSet.java
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@ -340,6 +340,21 @@ public class TestIntervalSet extends BaseTest {
assertEquals(expecting, result);
}
/**
* This case is responsible for antlr/antlr4#153.
* https://github.com/antlr/antlr4/issues/153
*/
@Test public void testMergeWhereAdditionMergesThreeExistingIntervals() throws Exception {
IntervalSet s = new IntervalSet();
s.add(0);
s.add(3);
s.add(5);
s.add(0, 7);
String expecting = "{0..7}";
String result = s.toString();
assertEquals(expecting, result);
}
@Test public void testMergeWithDoubleOverlap() throws Exception {
IntervalSet s = IntervalSet.of(1,10);
s.add(20,30);