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/* |
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* Written by Martin Buchholz with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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|
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/* |
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* @test |
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* @bug 6950540 |
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* @summary Attempt to add a null throws NullPointerException |
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*/ |
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|
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Comparator; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.PriorityQueue; |
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import java.util.SortedSet; |
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import java.util.TreeSet; |
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import java.util.concurrent.ArrayBlockingQueue; |
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import java.util.concurrent.LinkedBlockingDeque; |
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import java.util.concurrent.LinkedBlockingQueue; |
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import java.util.concurrent.PriorityBlockingQueue; |
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|
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public class NoNulls { |
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void test(String[] args) throws Throwable { |
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final Comparator<String> nullTolerantComparator |
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= new Comparator<String>() { |
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public int compare(String x, String y) { |
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return (x == null ? -1 : |
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y == null ? 1 : |
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x.compareTo(y)); |
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}}; |
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|
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final SortedSet<String> nullSortedSet |
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= new TreeSet<>(nullTolerantComparator); |
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nullSortedSet.add(null); |
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|
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final PriorityQueue<String> nullPriorityQueue |
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= new PriorityQueue<String>() { |
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public Object[] toArray() { return new Object[] { null };}}; |
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|
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final Collection<String> nullCollection = new ArrayList<>(); |
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nullCollection.add(null); |
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|
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THROWS(NullPointerException.class, |
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new F() { void f() { |
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new PriorityQueue<String>(nullCollection); |
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}}, |
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new F() { void f() { |
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new PriorityBlockingQueue<String>(nullCollection); |
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}}, |
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new F() { void f() { |
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new ArrayBlockingQueue<String>(10, false, nullCollection); |
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}}, |
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new F() { void f() { |
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new ArrayBlockingQueue<String>(10, true, nullCollection); |
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}}, |
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new F() { void f() { |
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new LinkedBlockingQueue<String>(nullCollection); |
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}}, |
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new F() { void f() { |
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new LinkedBlockingDeque<String>(nullCollection); |
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}}, |
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|
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new F() { void f() { |
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new PriorityQueue<String>((Collection<String>) nullPriorityQueue); |
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}}, |
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new F() { void f() { |
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new PriorityBlockingQueue<String>((Collection<String>) nullPriorityQueue); |
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}}, |
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|
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new F() { void f() { |
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new PriorityQueue<String>(nullSortedSet); |
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}}, |
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new F() { void f() { |
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new PriorityBlockingQueue<String>(nullSortedSet); |
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}}, |
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|
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new F() { void f() { |
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new PriorityQueue<String>((Collection<String>) nullSortedSet); |
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}}, |
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new F() { void f() { |
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new PriorityBlockingQueue<String>((Collection<String>) nullSortedSet); |
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}}, |
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|
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new F() { void f() { |
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new PriorityQueue<String>(nullPriorityQueue); |
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}}, |
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new F() { void f() { |
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new PriorityBlockingQueue<String>(nullPriorityQueue); |
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}}, |
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|
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new F() { void f() { |
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new PriorityQueue<String>().add(null); |
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}}, |
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new F() { void f() { |
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new PriorityBlockingQueue<String>().add(null); |
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}}, |
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new F() { void f() { |
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new ArrayBlockingQueue<String>(10, false).add(null); |
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}}, |
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new F() { void f() { |
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new ArrayBlockingQueue<String>(10, true).add(null); |
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}}, |
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new F() { void f() { |
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new LinkedBlockingQueue<String>().add(null); |
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}}, |
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new F() { void f() { |
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new LinkedBlockingDeque<String>().add(null); |
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}}, |
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|
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new F() { void f() { |
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new PriorityQueue<String>().offer(null); |
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}}, |
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new F() { void f() { |
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new PriorityBlockingQueue<String>().offer(null); |
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}}); |
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|
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nullSortedSet.add("foo"); |
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nullCollection.add("foo"); |
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THROWS(NullPointerException.class, |
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new F() { void f() { |
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new PriorityQueue<String>(nullCollection); |
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}}, |
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new F() { void f() { |
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new PriorityBlockingQueue<String>(nullCollection); |
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}}, |
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|
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new F() { void f() { |
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new PriorityQueue<String>((Collection<String>) nullPriorityQueue); |
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}}, |
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new F() { void f() { |
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new PriorityBlockingQueue<String>((Collection<String>) nullPriorityQueue); |
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}}, |
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|
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new F() { void f() { |
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new PriorityQueue<String>(nullSortedSet); |
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}}, |
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new F() { void f() { |
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new PriorityBlockingQueue<String>(nullSortedSet); |
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}}, |
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|
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new F() { void f() { |
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new PriorityQueue<String>((Collection<String>) nullSortedSet); |
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}}, |
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new F() { void f() { |
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new PriorityBlockingQueue<String>((Collection<String>) nullSortedSet); |
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}}); |
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|
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} |
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|
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//--------------------- Infrastructure --------------------------- |
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volatile int passed = 0, failed = 0; |
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void pass() {passed++;} |
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void fail() {failed++; Thread.dumpStack();} |
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void fail(String msg) {System.err.println(msg); fail();} |
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void unexpected(Throwable t) {failed++; t.printStackTrace();} |
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void check(boolean cond) {if (cond) pass(); else fail();} |
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void equal(Object x, Object y) { |
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if (x == null ? y == null : x.equals(y)) pass(); |
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else fail(x + " not equal to " + y);} |
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public static void main(String[] args) throws Throwable { |
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new NoNulls().instanceMain(args);} |
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public void instanceMain(String[] args) throws Throwable { |
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try {test(args);} catch (Throwable t) {unexpected(t);} |
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System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
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if (failed > 0) throw new AssertionError("Some tests failed");} |
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abstract class F {abstract void f() throws Throwable;} |
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void THROWS(Class<? extends Throwable> k, F... fs) { |
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for (F f : fs) |
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try {f.f(); fail("Expected " + k.getName() + " not thrown");} |
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catch (Throwable t) { |
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if (k.isAssignableFrom(t.getClass())) pass(); |
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else unexpected(t);}} |
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} |
