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Add test that removes elements from table while iterating.

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This commit is contained in:
James Roseborough
2013-07-05 21:02:00 +00:00
parent f3aeb69d30
commit e9c39d616b
1 changed files with 35 additions and 1 deletions
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34
test/junit/org/luaj/vm2/TableTest.java
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@@ -382,4 +382,38 @@ public class TableTest extends TestCase {
compareLists(t,v);
}
}
public void testRemoveWhileIterating() {
LuaTable t = LuaValue.tableOf(new LuaValue[] {
LuaValue.valueOf("a"), LuaValue.valueOf("aa"),
LuaValue.valueOf("b"), LuaValue.valueOf("bb"),
LuaValue.valueOf("c"), LuaValue.valueOf("cc"),
LuaValue.valueOf("d"), LuaValue.valueOf("dd"),
LuaValue.valueOf("e"), LuaValue.valueOf("ee"),
}, new LuaValue[] {
LuaValue.valueOf("11"),
LuaValue.valueOf("22"),
LuaValue.valueOf("33"),
LuaValue.valueOf("44"),
LuaValue.valueOf("55"),
});
// Find expected order after removal.
java.util.List<String> expected = new java.util.ArrayList<String>();
Varargs n;
int i;
for (n = t.next(LuaValue.NIL), i = 0; !n.arg1().isnil(); n = t.next(n.arg1()), ++i) {
if (i % 2 == 0)
expected.add(n.arg1() + "=" + n.arg(2));
}
// Remove every other key while iterating over the table.
for (n = t.next(LuaValue.NIL), i = 0; !n.arg1().isnil(); n = t.next(n.arg1()), ++i) {
if (i % 2 != 0)
t.set(n.arg1(), LuaValue.NIL);
}
// Iterate over remaining table, and form list of entries still in table.
java.util.List<String> actual = new java.util.ArrayList<String>();
for (n = t.next(LuaValue.NIL); !n.arg1().isnil(); n = t.next(n.arg1())) {
actual.add(n.arg1() + "=" + n.arg(2));
}
assertEquals(expected, actual);
}
}