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*/ |
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import java.util.Collection; |
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import java.util.Deque; |
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import java.util.NoSuchElementException; |
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import java.util.Queue; |
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import junit.framework.Test; |
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34 |
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impl)); |
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} |
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|
37 |
< |
/** A test of the CollectionImplementation implementation ! */ |
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/** Checks properties of empty collections. */ |
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public void testEmptyMeansEmpty() { |
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< |
assertTrue(impl.emptyCollection().isEmpty()); |
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assertEquals(0, impl.emptyCollection().size()); |
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Collection c = impl.emptyCollection(); |
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assertTrue(c.isEmpty()); |
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assertEquals(0, c.size()); |
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assertEquals("[]", c.toString()); |
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assertEquals(0, c.toArray().length); |
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{ |
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Object[] a = new Object[0]; |
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assertSame(a, c.toArray(a)); |
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} |
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> |
c.forEach((e) -> { throw new AssertionError(); }); |
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> |
if (Queue.class.isAssignableFrom(impl.klazz())) { |
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Queue q = (Queue) c; |
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assertNull(q.peek()); |
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assertNull(q.poll()); |
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> |
} |
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> |
if (Deque.class.isAssignableFrom(impl.klazz())) { |
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> |
Deque d = (Deque) c; |
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> |
assertNull(d.peekFirst()); |
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assertNull(d.peekLast()); |
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assertNull(d.pollFirst()); |
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assertNull(d.pollLast()); |
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> |
} |
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> |
} |
62 |
> |
|
63 |
> |
public void testNullPointerExceptions() { |
64 |
> |
Collection c = impl.emptyCollection(); |
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> |
assertThrows( |
66 |
> |
NullPointerException.class, |
67 |
> |
() -> c.addAll(null), |
68 |
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() -> c.containsAll(null), |
69 |
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() -> c.retainAll(null), |
70 |
> |
() -> c.removeAll(null), |
71 |
> |
() -> c.removeIf(null)); |
72 |
> |
|
73 |
> |
if (!impl.permitsNulls()) { |
74 |
> |
assertThrows( |
75 |
> |
NullPointerException.class, |
76 |
> |
() -> c.add(null)); |
77 |
> |
} |
78 |
> |
if (!impl.permitsNulls() |
79 |
> |
&& Queue.class.isAssignableFrom(impl.klazz())) { |
80 |
> |
Queue q = (Queue) c; |
81 |
> |
assertThrows( |
82 |
> |
NullPointerException.class, |
83 |
> |
() -> q.offer(null)); |
84 |
> |
} |
85 |
> |
if (!impl.permitsNulls() |
86 |
> |
&& Deque.class.isAssignableFrom(impl.klazz())) { |
87 |
> |
Deque d = (Deque) c; |
88 |
> |
assertThrows( |
89 |
> |
NullPointerException.class, |
90 |
> |
() -> d.addFirst(null), |
91 |
> |
() -> d.addLast(null), |
92 |
> |
() -> d.offerFirst(null), |
93 |
> |
() -> d.offerLast(null), |
94 |
> |
() -> d.push(null)); |
95 |
> |
} |
96 |
> |
} |
97 |
> |
|
98 |
> |
public void testNoSuchElementExceptions() { |
99 |
> |
Collection c = impl.emptyCollection(); |
100 |
> |
|
101 |
> |
if (Queue.class.isAssignableFrom(impl.klazz())) { |
102 |
> |
Queue q = (Queue) c; |
103 |
> |
assertThrows( |
104 |
> |
NoSuchElementException.class, |
105 |
> |
() -> q.element(), |
106 |
> |
() -> q.remove()); |
107 |
> |
} |
108 |
> |
if (Deque.class.isAssignableFrom(impl.klazz())) { |
109 |
> |
Deque d = (Deque) c; |
110 |
> |
assertThrows( |
111 |
> |
NoSuchElementException.class, |
112 |
> |
() -> d.getFirst(), |
113 |
> |
() -> d.getLast(), |
114 |
> |
() -> d.removeFirst(), |
115 |
> |
() -> d.removeLast(), |
116 |
> |
() -> d.pop()); |
117 |
> |
} |
118 |
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} |
119 |
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|
120 |
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// public void testCollectionDebugFail() { fail(); } |