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[LANG-1702] Add test in TypeUtilsTest #1151

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merged 3 commits into from
Jan 3, 2024
Merged

[LANG-1702] Add test in TypeUtilsTest #1151

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3ef61aa
test for LANG-1702
elharo Dec 19, 2023
cb036c5
remove trailing space
elharo Dec 23, 2023
9fed76d
Comments -> Javadoc
garydgregory Jan 3, 2024
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20 changes: 20 additions & 0 deletions src/test/java/org/apache/commons/lang3/reflect/TypeUtilsTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -315,6 +315,26 @@ public void test_LANG_820() {
assertArrayEquals(expectedArray, TypeUtils.normalizeUpperBounds(typeArray));
}

/** This non-static inner class is parameterized. */
private class MyInnerClass<T> {
}

/** The inner class is used as a return type from a method. */
private <U> MyInnerClass<U> aMethod() {
return null;
}

@Test
public void test_LANG_1702() throws NoSuchMethodException, SecurityException {
final Type type = TypeUtilsTest.class.getDeclaredMethod("aMethod").getGenericReturnType();

// any map will do
final Map<TypeVariable<?>, Type> typeArguments = Collections.emptyMap();

// this fails with a stack overflow
final Type unrolledType = TypeUtils.unrollVariables(typeArguments, type);
}

@Test
public void testContainsTypeVariables() throws Exception {
assertFalse(TypeUtils.containsTypeVariables(Test1.class.getMethod("m0").getGenericReturnType()));
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