test/tck/AbstractQueueTest.java

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 * Other contributors include Andrew Wright, Jeffrey Hayes,
 * Pat Fisher, Mike Judd.
 */

import java.util.AbstractQueue;
import java.util.Arrays;
import java.util.Iterator;
import java.util.NoSuchElementException;

import junit.framework.Test;
import junit.framework.TestSuite;

public class AbstractQueueTest extends JSR166TestCase {
    public static void main(String[] args) {
        main(suite(), args);
    }
    public static Test suite() {
        return new TestSuite(AbstractQueueTest.class);
    }

    static class Succeed extends AbstractQueue<Item> {
        public boolean offer(Item x) {
            if (x == null) throw new NullPointerException();
            return true;
        }
        public Item peek() { return one; }
        public Item poll() { return one; }
        public int size() { return 0; }
        public Iterator<Item> iterator() { return null; } // not needed
    }

    static class Fail extends AbstractQueue<Item> {
        public boolean offer(Item x) {
            if (x == null) throw new NullPointerException();
            return false;
        }
        public Item peek() { return null; }
        public Item poll() { return null; }
        public int size() { return 0; }
        public Iterator<Item> iterator() { return null; } // not needed
    }

    /**
     * add returns true if offer succeeds
     */
    public void testAddS() {
        Succeed q = new Succeed();
        assertTrue(q.add(two));
    }

    /**
     * add throws IllegalStateException if offer fails
     */
    public void testAddF() {
        Fail q = new Fail();
        try {
            q.add(one);
            shouldThrow();
        } catch (IllegalStateException success) {}
    }

    /**
     * add throws NullPointerException if offer does
     */
    public void testAddNPE() {
        Succeed q = new Succeed();
        try {
            q.add(null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }

    /**
     * remove returns normally if poll succeeds
     */
    public void testRemoveS() {
        Succeed q = new Succeed();
        assertSame(one, q.remove());
    }

    /**
     * remove throws NSEE if poll returns null
     */
    public void testRemoveF() {
        Fail q = new Fail();
        try {
            q.remove();
            shouldThrow();
        } catch (NoSuchElementException success) {}
    }

    /**
     * element returns normally if peek succeeds
     */
    public void testElementS() {
        Succeed q = new Succeed();
        assertSame(one, q.element());
    }

    /**
     * element throws NSEE if peek returns null
     */
    public void testElementF() {
        Fail q = new Fail();
        try {
            q.element();
            shouldThrow();
        } catch (NoSuchElementException success) {}
    }

    /**
     * addAll(null) throws NullPointerException
     */
    public void testAddAll1() {
        Succeed q = new Succeed();
        try {
            q.addAll(null);
            shouldThrow();
        } catch (NullPointerException success) {}
    }

    /**
     * addAll(this) throws IllegalArgumentException
     */
    public void testAddAllSelf() {
        Succeed q = new Succeed();
        try {
            q.addAll(q);
            shouldThrow();
        } catch (IllegalArgumentException success) {}
    }

    /**
     * addAll of a collection with null elements throws NullPointerException
     */
    public void testAddAll2() {
        Succeed q = new Succeed();
        Item[] items = new Item[SIZE];
        try {
            q.addAll(Arrays.asList(items));
            shouldThrow();
        } catch (NullPointerException success) {}
    }

    /**
     * addAll of a collection with any null elements throws NPE after
     * possibly adding some elements
     */
    public void testAddAll3() {
        Succeed q = new Succeed();
        Item[] items = new Item[SIZE];
        for (int i = 0; i < SIZE - 1; ++i)
            items[i] = itemFor(i);
        try {
            q.addAll(Arrays.asList(items));
            shouldThrow();
        } catch (NullPointerException success) {}
    }

    /**
     * addAll throws IllegalStateException if an add fails
     */
    public void testAddAll4() {
        Fail q = new Fail();
        Item[] items = seqItems(SIZE);
        try {
            q.addAll(Arrays.asList(items));
            shouldThrow();
        } catch (IllegalStateException success) {}
    }

}
Revision:	1.19
Committed:	Tue Jan 26 13:33:05 2021 UTC (3 years, 3 months ago) by dl
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.18:	+17 -19 lines
Log Message:	Replace Integer with Item class
#	User	Rev	Content
1	dl	1.1	/*
2			* Written by Doug Lea with assistance from members of JCP JSR-166
3			* Expert Group and released to the public domain, as explained at
4	jsr166	1.7	* http://creativecommons.org/publicdomain/zero/1.0/
5	jsr166	1.2	* Other contributors include Andrew Wright, Jeffrey Hayes,
6			* Pat Fisher, Mike Judd.
7	dl	1.1	*/
8
9	jsr166	1.9	import java.util.AbstractQueue;
10			import java.util.Arrays;
11			import java.util.Iterator;
12			import java.util.NoSuchElementException;
13	dl	1.1
14	jsr166	1.10	import junit.framework.Test;
15			import junit.framework.TestSuite;
16
17	dl	1.1	public class AbstractQueueTest extends JSR166TestCase {
18			public static void main(String[] args) {
19	jsr166	1.13	main(suite(), args);
20	dl	1.1	}
21			public static Test suite() {
22			return new TestSuite(AbstractQueueTest.class);
23			}
24
25	dl	1.19	static class Succeed extends AbstractQueue<Item> {
26			public boolean offer(Item x) {
27	dl	1.1	if (x == null) throw new NullPointerException();
28	jsr166	1.2	return true;
29	dl	1.1	}
30	dl	1.19	public Item peek() { return one; }
31			public Item poll() { return one; }
32	dl	1.1	public int size() { return 0; }
33	dl	1.19	public Iterator<Item> iterator() { return null; } // not needed
34	dl	1.1	}
35
36	dl	1.19	static class Fail extends AbstractQueue<Item> {
37			public boolean offer(Item x) {
38	dl	1.1	if (x == null) throw new NullPointerException();
39	jsr166	1.2	return false;
40	dl	1.1	}
41	dl	1.19	public Item peek() { return null; }
42			public Item poll() { return null; }
43	dl	1.1	public int size() { return 0; }
44	dl	1.19	public Iterator<Item> iterator() { return null; } // not needed
45	dl	1.1	}
46
47			/**
48			* add returns true if offer succeeds
49			*/
50			public void testAddS() {
51			Succeed q = new Succeed();
52			assertTrue(q.add(two));
53			}
54
55			/**
56	jsr166	1.16	* add throws IllegalStateException if offer fails
57	dl	1.1	*/
58			public void testAddF() {
59			Fail q = new Fail();
60			try {
61			q.add(one);
62			shouldThrow();
63	jsr166	1.3	} catch (IllegalStateException success) {}
64	dl	1.1	}
65
66			/**
67	jsr166	1.15	* add throws NullPointerException if offer does
68	dl	1.1	*/
69			public void testAddNPE() {
70			Succeed q = new Succeed();
71			try {
72			q.add(null);
73			shouldThrow();
74	jsr166	1.3	} catch (NullPointerException success) {}
75	dl	1.1	}
76
77			/**
78			* remove returns normally if poll succeeds
79			*/
80			public void testRemoveS() {
81			Succeed q = new Succeed();
82	jsr166	1.17	assertSame(one, q.remove());
83	dl	1.1	}
84
85			/**
86			* remove throws NSEE if poll returns null
87			*/
88			public void testRemoveF() {
89			Fail q = new Fail();
90			try {
91			q.remove();
92			shouldThrow();
93	jsr166	1.3	} catch (NoSuchElementException success) {}
94	dl	1.1	}
95
96			/**
97			* element returns normally if peek succeeds
98			*/
99			public void testElementS() {
100			Succeed q = new Succeed();
101	jsr166	1.18	assertSame(one, q.element());
102	dl	1.1	}
103
104			/**
105			* element throws NSEE if peek returns null
106			*/
107			public void testElementF() {
108			Fail q = new Fail();
109			try {
110			q.element();
111			shouldThrow();
112	jsr166	1.3	} catch (NoSuchElementException success) {}
113	dl	1.1	}
114
115			/**
116	jsr166	1.15	* addAll(null) throws NullPointerException
117	dl	1.1	*/
118			public void testAddAll1() {
119	jsr166	1.11	Succeed q = new Succeed();
120	dl	1.1	try {
121			q.addAll(null);
122			shouldThrow();
123	jsr166	1.3	} catch (NullPointerException success) {}
124	dl	1.1	}
125
126			/**
127	jsr166	1.15	* addAll(this) throws IllegalArgumentException
128	dl	1.1	*/
129			public void testAddAllSelf() {
130	jsr166	1.11	Succeed q = new Succeed();
131	dl	1.1	try {
132			q.addAll(q);
133			shouldThrow();
134	jsr166	1.3	} catch (IllegalArgumentException success) {}
135	dl	1.1	}
136
137			/**
138	jsr166	1.15	* addAll of a collection with null elements throws NullPointerException
139	dl	1.1	*/
140			public void testAddAll2() {
141	jsr166	1.11	Succeed q = new Succeed();
142	dl	1.19	Item[] items = new Item[SIZE];
143	dl	1.1	try {
144	dl	1.19	q.addAll(Arrays.asList(items));
145	dl	1.1	shouldThrow();
146	jsr166	1.3	} catch (NullPointerException success) {}
147	dl	1.1	}
148	jsr166	1.5
149	dl	1.1	/**
150			* addAll of a collection with any null elements throws NPE after
151			* possibly adding some elements
152			*/
153			public void testAddAll3() {
154	jsr166	1.11	Succeed q = new Succeed();
155	dl	1.19	Item[] items = new Item[SIZE];
156	jsr166	1.14	for (int i = 0; i < SIZE - 1; ++i)
157	dl	1.19	items[i] = itemFor(i);
158	dl	1.1	try {
159	dl	1.19	q.addAll(Arrays.asList(items));
160	dl	1.1	shouldThrow();
161	jsr166	1.3	} catch (NullPointerException success) {}
162	dl	1.1	}
163	jsr166	1.5
164	dl	1.1	/**
165	jsr166	1.15	* addAll throws IllegalStateException if an add fails
166	dl	1.1	*/
167			public void testAddAll4() {
168	jsr166	1.12	Fail q = new Fail();
169	dl	1.19	Item[] items = seqItems(SIZE);
170	dl	1.1	try {
171	dl	1.19	q.addAll(Arrays.asList(items));
172	dl	1.1	shouldThrow();
173	jsr166	1.3	} catch (IllegalStateException success) {}
174	dl	1.1	}
175
176			}