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Fix balanced match for empty string (fixes issue #23)

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This commit is contained in:
James Roseborough
2014-03-09 15:33:44 +00:00
parent f17e9d7018
commit 7b97573ac8
4 changed files with 49 additions and 10 deletions
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29
test/junit/org/luaj/vm2/StringTest.java
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@@ -349,4 +349,33 @@ public class StringTest extends TestCase {
assertEquals(1, sub.indexOfAny(CdEFGHIJ));
assertEquals(-1, sub.indexOfAny(EFGHIJKL));
}
public void testMatchShortPatterns() {
LuaValue[] args = { LuaString.valueOf("%bxy") };
LuaString _ = LuaString.valueOf("");
LuaString a = LuaString.valueOf("a");
LuaString ax = LuaString.valueOf("ax");
LuaString axb = LuaString.valueOf("axb");
LuaString axby = LuaString.valueOf("axby");
LuaString xbya = LuaString.valueOf("xbya");
LuaString bya = LuaString.valueOf("bya");
LuaString xby = LuaString.valueOf("xby");
LuaString axbya = LuaString.valueOf("axbya");
LuaValue nil = LuaValue.NIL;
assertEquals(nil, _.invokemethod("match", args));
assertEquals(nil, a.invokemethod("match", args));
assertEquals(nil, ax.invokemethod("match", args));
assertEquals(nil, axb.invokemethod("match", args));
assertEquals(xby, axby.invokemethod("match", args));
assertEquals(xby, xbya.invokemethod("match", args));
assertEquals(nil, bya.invokemethod("match", args));
assertEquals(xby, xby.invokemethod("match", args));
assertEquals(xby, axbya.invokemethod("match", args));
assertEquals(xby, axbya.substring(0,4).invokemethod("match", args));
assertEquals(nil, axbya.substring(0,3).invokemethod("match", args));
assertEquals(xby, axbya.substring(1,5).invokemethod("match", args));
assertEquals(nil, axbya.substring(2,5).invokemethod("match", args));
}
}