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red code is green wildcard problems ++(IDEA-66750;IDEA-75178;IDEA-73377)

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This commit is contained in:
anna
2012-03-29 15:17:24 +02:00
parent cfbdc39e46
commit 1563df17f1
4 changed files with 54 additions and 49 deletions
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java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/WildcardTypes.java
+44
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@@ -172,4 +172,48 @@ class My<T> {
public void test() {
if (getSuperclass() == List.class);
}
}
class IDEA75178 {
void test(Set<String> labels) {
final Matcher<? super Object> empty = isEmpty();
assertThat(labels, empty);
assertAlsoThat(empty, labels);
}
public static <T> void assertThat(T actual, Matcher<T> matcher) { throw new AssertionError(actual.toString() + matcher.toString());}
public static <T> void assertAlsoThat(Matcher<T> matcher, T actual) { throw new AssertionError(actual.toString() + matcher.toString());}
public static <T> Matcher<? super T> isEmpty() {
return null;
}
static class Matcher<<warning descr="Type parameter 'T' is never used">T</warning>>{}
class Foo {}
void testComment() {
Set<Foo> foos = Collections.emptySet();
assertThatComment(foos, hasSize(0));
}
<E> Matcher<? super Collection<? extends E>> hasSize(int size) {return size == 0 ? null : null;}
<T> void assertThatComment(T actual, Matcher<? super T> matcher){ throw new AssertionError(actual.toString() + matcher.toString());}
}
class IDEA66750 {
public void test() {
List<List<String>> data = new ArrayList<List<String>>();
List<List<?>> y = <error descr="Inconvertible types; cannot cast 'java.util.List<java.util.List<java.lang.String>>' to 'java.util.List<java.util.List<?>>'">(List<List<?>>)data</error>;
System.out.println(y);
ArrayList<Number> al = <error descr="Inconvertible types; cannot cast 'java.util.ArrayList<java.lang.Integer>' to 'java.util.ArrayList<java.lang.Number>'">(ArrayList<Number>) new ArrayList<Integer>(1)</error>;
System.out.println(al);
}
}
class IDEA73377 {
public Iterator<Map.Entry<Map.Entry<?, ?>, ?>> iterator(Map<?, ?> map) {
//noinspection unchecked
return <error descr="Inconvertible types; cannot cast 'java.util.Iterator<java.util.Map.Entry<capture<?>,capture<?>>>' to 'java.util.Iterator<java.util.Map.Entry<java.util.Map.Entry<?,?>,?>>'">(Iterator<Map.Entry<Map.Entry<?, ?>, ?>>)map.entrySet().iterator()</error>;
}
}