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added the failing test for issue #308 #309

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added the failing test for issue #308 #309

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15 changes: 15 additions & 0 deletions src/test/java/io/usethesource/vallang/issues/RegressionTests.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
import io.usethesource.vallang.ISet;
import io.usethesource.vallang.ISourceLocation;
import io.usethesource.vallang.IString;
import io.usethesource.vallang.ITuple;
import io.usethesource.vallang.IValueFactory;
import io.usethesource.vallang.ValueProvider;
import io.usethesource.vallang.io.StandardTextReader;
Expand Down Expand Up @@ -78,4 +79,18 @@ void escapeNormalCharacters(IValueFactory valueFactory, TypeStore typeStore) thr
assertEquals("$", s.getValue());
}

@ParameterizedTest @ArgumentsSource(ValueProvider.class)
void setDifferenceInThePresenceOfHashCollisions(
IValueFactory vf,
@GivenValue("{<\"990evT\",[]>,<\"\",[]>,<\"\\a00\",[]>}")
ISet s,
@GivenValue("<\"\\a00\",[]>")
ITuple elem) {

var lhs = s.delete(elem);
var rhs = s.stream().filter(p -> !p.equals(elem)).collect(vf.setWriter());

assertEquals(lhs, rhs);
}

}
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