test/loops/NavigableMapCheck.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/licenses/publicdomain
 */
/**
 * @test
 * @synopsis Times and checks basic map operations
 */
import java.util.*;
import java.io.*;

public class NavigableMapCheck {

    static int absentSize;
    static int absentMask;
    static Integer[] absent;

    static final Integer MISSING = new Integer(Integer.MIN_VALUE);

    static TestTimer timer = new TestTimer();

    static void reallyAssert(boolean b) {
        if (!b) throw new Error("Failed Assertion");
    }

    public static void main(String[] args) throws Exception {
        Class mapClass = null;
        int numTests = 50;
        int size = 50000;

        if (args.length > 0) {
            try {
                mapClass = Class.forName(args[0]);
            } catch(ClassNotFoundException e) {
                throw new RuntimeException("Class " + args[0] + " not found.");
            }
        }


        if (args.length > 1) 
            numTests = Integer.parseInt(args[1]);

        if (args.length > 2) 
            size = Integer.parseInt(args[2]);

        System.out.println("Testing " + mapClass.getName() + " trials: " + numTests + " size: " + size);


        absentSize = 8;
        while (absentSize < size) absentSize <<= 1;
        absentMask = absentSize - 1;
        absent = new Integer[absentSize];

        for (int i = 0; i < absentSize; ++i) 
            absent[i] = new Integer(i * 2);

        Integer[] key = new Integer[size];
        for (int i = 0; i < size; ++i) 
            key[i] = new Integer(i * 2 + 1);


        for (int rep = 0; rep < numTests; ++rep) {
            runTest(newMap(mapClass), key);
        }

        TestTimer.printStats();

    }

    static NavigableMap newMap(Class cl) {
        try {
            NavigableMap m = (NavigableMap)cl.newInstance();
            return m;
        } catch(Exception e) {
            throw new RuntimeException("Can't instantiate " + cl + ": " + e);
        }
    }


    static void runTest(NavigableMap s, Integer[] key) {
        shuffle(key);
        int size = key.length;
        long startTime = System.currentTimeMillis();
        test(s, key);
        long time = System.currentTimeMillis() - startTime;
    }

    static void t1(String nm, int n, NavigableMap s, Integer[] key, int expect) {
        int sum = 0;
        int iters = 4;
        timer.start(nm, n * iters);
        for (int j = 0; j < iters; ++j) {
            for (int i = 0; i < n; i++) {
                if (s.get(key[i]) != null) ++sum;
            }
        }
        timer.finish(); 
        reallyAssert (sum == expect * iters);
    }

    static void t2(String nm, int n, NavigableMap s, Integer[] key, int expect) {
        int sum = 0;
        timer.start(nm, n);
        for (int i = 0; i < n; i++) {
            if (s.remove(key[i]) != null) ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == expect);
    }

    static void t3(String nm, int n, NavigableMap s, Integer[] key, int expect) {
        int sum = 0;
        timer.start(nm, n);
        for (int i = 0; i < n; i++) {
            if (s.put(key[i], absent[i & absentMask]) == null) ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == expect);
    }

    static void t4(String nm, int n, NavigableMap s, Integer[] key, int expect) {
        int sum = 0;
        timer.start(nm, n);
        for (int i = 0; i < n; i++) {
            if (s.containsKey(key[i])) ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == expect);
    }

    static void t5(String nm, int n, NavigableMap s, Integer[] key, int expect) {
        int sum = 0;
        timer.start(nm, n/2);
        for (int i = n-2; i >= 0; i-=2) {
            if (s.remove(key[i]) != null) ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == expect);
    }

    static void t6(String nm, int n, NavigableMap s, Integer[] k1, Integer[] k2) {
        int sum = 0;
        timer.start(nm, n * 2);
        for (int i = 0; i < n; i++) {
            if (s.get(k1[i]) != null) ++sum;
            if (s.get(k2[i & absentMask]) != null) ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == n);
    }

    static void t7(String nm, int n, NavigableMap s, Integer[] k1, Integer[] k2) {
        int sum = 0;
        timer.start(nm, n * 2);
        for (int i = 0; i < n; i++) {
            if (s.containsKey(k1[i])) ++sum;
            if (s.containsKey(k2[i & absentMask])) ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == n);
    }

    static void t8(String nm, int n, NavigableMap s, Integer[] key, int expect) {
        int sum = 0;
        timer.start(nm, n);
        for (int i = 0; i < n; i++) {
            if (s.get(key[i]) != null) ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == expect);
    }


    static void t9(NavigableMap s) {
        int sum = 0;
        int iters = 20;
        timer.start("ContainsValue (/n)     ", iters * s.size());
        int step = absentSize / iters;
        for (int i = 0; i < absentSize; i += step)
            if (s.containsValue(absent[i])) ++sum;
        timer.finish(); 
        reallyAssert (sum != 0);
    }

    static void higherTest(NavigableMap s) {
        int sum = 0;
        int iters = s.size();
        timer.start("Higher                 ", iters);
        Map.Entry e = s.firstEntry();
        while (e != null) {
            ++sum;
            e = s.higherEntry(e.getKey());
        }
        timer.finish(); 
        reallyAssert (sum == iters);
    }

    static void lowerTest(NavigableMap s) {
        int sum = 0;
        int iters = s.size();
        timer.start("Lower                  ", iters);
        Map.Entry e = s.firstEntry();
        while (e != null) {
            ++sum;
            e = s.higherEntry(e.getKey());
        }
        timer.finish(); 
        reallyAssert (sum == iters);
    }

    static void ceilingTest(NavigableMap s) {
        int sum = 0;
        int iters = s.size();
        if (iters > absentSize) iters = absentSize;
        timer.start("Ceiling                ", iters);
        for (int i = 0; i < iters; ++i) {
            Map.Entry e = s.ceilingEntry(absent[i]);
            if (e != null)
                ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == iters);
    }

    static void floorTest(NavigableMap s) {
        int sum = 0;
        int iters = s.size();
        if (iters > absentSize) iters = absentSize;
        timer.start("Floor                  ", iters);
        for (int i = 1; i < iters; ++i) {
            Map.Entry e = s.floorEntry(absent[i]);
            if (e != null)
                ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == iters-1);
    }


    static void ktest(NavigableMap s, int size, Integer[] key) {
        timer.start("ContainsKey            ", size);
        Set ks = s.keySet();
        int sum = 0;
        for (int i = 0; i < size; i++) {
            if (ks.contains(key[i])) ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == size);
    }


    static void ittest1(NavigableMap s, int size) {
        int sum = 0;
        timer.start("Iter Key               ", size);
        for (Iterator it = s.keySet().iterator(); it.hasNext(); ) {
            if(it.next() != MISSING)
                ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == size);
    }

    static void ittest2(NavigableMap s, int size) {
        int sum = 0;
        timer.start("Iter Value             ", size);
        for (Iterator it = s.values().iterator(); it.hasNext(); ) {
            if(it.next() != MISSING)
                ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == size);
    }
    static void ittest3(NavigableMap s, int size) {
        int sum = 0;
        timer.start("Iter Entry             ", size);
        for (Iterator it = s.entrySet().iterator(); it.hasNext(); ) {
            if(it.next() != MISSING)
                ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == size);
    }

    static void ittest(NavigableMap s, int size) {
        ittest1(s, size);
        ittest2(s, size);
        ittest3(s, size);
    }

    static void rittest1(NavigableMap s, int size) {
        int sum = 0;
        timer.start("Desc Iter Key          ", size);
        for (Iterator it = s.descendingKeySet().iterator(); it.hasNext(); ) {
            if(it.next() != MISSING)
                ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == size);
    }

    static void rittest2(NavigableMap s, int size) {
        int sum = 0;
        timer.start("Desc Iter Entry        ", size);
        for (Iterator it = s.descendingEntrySet().iterator(); it.hasNext(); ) {
            if(it.next() != MISSING)
                ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == size);
    }

    static void rittest(NavigableMap s, int size) {
        rittest1(s, size);
        rittest2(s, size);
    }


    static void rtest(NavigableMap s, int size) {
        timer.start("Remove (iterator)      ", size);
        for (Iterator it = s.keySet().iterator(); it.hasNext(); ) {
            it.next();
            it.remove();
        }
        timer.finish(); 
    }

    static void rvtest(NavigableMap s, int size) {
        timer.start("Remove (iterator)      ", size);
        for (Iterator it = s.values().iterator(); it.hasNext(); ) {
            it.next();
            it.remove();
        }
        timer.finish(); 
    }


    static void dtest(NavigableMap s, int size, Integer[] key) {
        timer.start("Put (putAll)           ", size * 2);
        NavigableMap s2 = null;
        try {
            s2 = (NavigableMap) (s.getClass().newInstance());
            s2.putAll(s);
        }
        catch (Exception e) { e.printStackTrace(); return; }
        timer.finish(); 
    
        timer.start("Iter Equals            ", size * 2);
        boolean eqt = s2.equals(s) && s.equals(s2);
        reallyAssert (eqt);
        timer.finish(); 

        timer.start("Iter HashCode          ", size * 2);
        int shc = s.hashCode();
        int s2hc = s2.hashCode();
        reallyAssert (shc == s2hc);
        timer.finish(); 

        timer.start("Put (present)          ", size);
        s2.putAll(s);
        timer.finish(); 

        timer.start("Iter EntrySet contains ", size * 2);
        Set es2 = s2.entrySet();
        int sum = 0;
        for (Iterator i1 = s.entrySet().iterator(); i1.hasNext(); ) {
            Object entry = i1.next();
            if (es2.contains(entry)) ++sum;
        }
        timer.finish(); 
        reallyAssert (sum == size);

        t6("Get                    ", size, s2, key, absent);

        Object hold = s2.get(key[size-1]);
        s2.put(key[size-1], absent[0]);
        timer.start("Iter Equals            ", size * 2);
        eqt = s2.equals(s) && s.equals(s2);
        reallyAssert (!eqt);
        timer.finish(); 

        timer.start("Iter HashCode          ", size * 2);
        int s1h = s.hashCode();
        int s2h = s2.hashCode();
        reallyAssert (s1h != s2h);
        timer.finish(); 

        s2.put(key[size-1], hold);
        timer.start("Remove (iterator)      ", size * 2);
        Iterator s2i = s2.entrySet().iterator();
        Set es = s.entrySet();
        while (s2i.hasNext())
            es.remove(s2i.next());
        timer.finish(); 

        reallyAssert (s.isEmpty());

        timer.start("Clear                  ", size);
        s2.clear();
        timer.finish(); 
        reallyAssert (s2.isEmpty() && s.isEmpty());
    }


    static void test(NavigableMap s, Integer[] key) {
        int size = key.length;

        t3("Put (absent)           ", size, s, key, size);
        t3("Put (present)          ", size, s, key, 0);
        t7("ContainsKey            ", size, s, key, absent);
        t4("ContainsKey            ", size, s, key, size);
        ktest(s, size, key);
        t4("ContainsKey            ", absentSize, s, absent, 0);
        t6("Get                    ", size, s, key, absent);
        t1("Get (present)          ", size, s, key, size);
        t1("Get (absent)           ", absentSize, s, absent, 0);
        t2("Remove (absent)        ", absentSize, s, absent, 0);
        t5("Remove (present)       ", size, s, key, size / 2);
        t3("Put (half present)     ", size, s, key, size / 2);

        ittest(s, size);
        rittest(s, size);
        higherTest(s);
        ceilingTest(s);
        floorTest(s);
        lowerTest(s);
        t9(s);
        rtest(s, size);

        t4("ContainsKey            ", size, s, key, 0);
        t2("Remove (absent)        ", size, s, key, 0);
        t3("Put (presized)         ", size, s, key, size);
        dtest(s, size, key);
    }

    static class TestTimer {
        private String name;
        private long numOps;
        private long startTime;
        private String cname;

        static final java.util.TreeMap accum = new java.util.TreeMap();
    
        static void printStats() {
            for (Iterator it = accum.entrySet().iterator(); it.hasNext(); ) {
                Map.Entry e = (Map.Entry)(it.next());
                Stats stats = ((Stats)(e.getValue()));
                int n = stats.number;
                double t;
                if (n > 0) 
                    t = stats.sum / n;
                else
                    t = stats.least;
                long nano = Math.round(1000000.0 * t);
                System.out.println(e.getKey() + ": " + nano);
            }
        }
    
        void start(String name, long numOps) {
            this.name = name;
            this.cname = classify();
            this.numOps = numOps;
            startTime = System.currentTimeMillis();
        }
    

        String classify() {
            if (name.startsWith("Get"))
                return "Get                    ";
            else if (name.startsWith("Put"))
                return "Put                    ";
            else if (name.startsWith("Remove"))
                return "Remove                 ";
            else if (name.startsWith("Iter"))
                return "Iter                   ";
            else 
                return null;
        }

        void finish() {
            long endTime = System.currentTimeMillis();
            long time = endTime - startTime;
            double timePerOp = ((double)time)/numOps;

            Object st = accum.get(name);
            if (st == null)
                accum.put(name, new Stats(timePerOp));
            else {
                Stats stats = (Stats) st;
                stats.sum += timePerOp;
                stats.number++;
                if (timePerOp < stats.least) stats.least = timePerOp;
            }

            if (cname != null) {
                st = accum.get(cname);
                if (st == null)
                    accum.put(cname, new Stats(timePerOp));
                else {
                    Stats stats = (Stats) st;
                    stats.sum += timePerOp;
                    stats.number++;
                    if (timePerOp < stats.least) stats.least = timePerOp;
                }
            }

        }

    }

    static class Stats {
        double sum = 0;
        double least;
        int number = 0;
        Stats(double t) { least = t; }
    }

    static Random rng = new Random();

    static void shuffle(Integer[] keys) {
        int size = keys.length;
        for (int i=size; i>1; i--) {
            int r = rng.nextInt(i);
            Integer t = keys[i-1];
            keys[i-1] = keys[r];
            keys[r] = t;
        }
    }

}

Revision:	1.2
Committed:	Mon May 9 19:33:30 2005 UTC (18 years, 11 months ago) by dl
Branch:	MAIN
Changes since 1.1:	+5 -0 lines
Log Message:	Add headers
#	Content
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	* http://creativecommons.org/licenses/publicdomain
5	*/
6	/**
7	* @test
8	* @synopsis Times and checks basic map operations
9	*/
10	import java.util.*;
11	import java.io.*;
12
13	public class NavigableMapCheck {
14
15	static int absentSize;
16	static int absentMask;
17	static Integer[] absent;
18
19	static final Integer MISSING = new Integer(Integer.MIN_VALUE);
20
21	static TestTimer timer = new TestTimer();
22
23	static void reallyAssert(boolean b) {
24	if (!b) throw new Error("Failed Assertion");
25	}
26
27	public static void main(String[] args) throws Exception {
28	Class mapClass = null;
29	int numTests = 50;
30	int size = 50000;
31
32	if (args.length > 0) {
33	try {
34	mapClass = Class.forName(args[0]);
35	} catch(ClassNotFoundException e) {
36	throw new RuntimeException("Class " + args[0] + " not found.");
37	}
38	}
39
40
41	if (args.length > 1)
42	numTests = Integer.parseInt(args[1]);
43
44	if (args.length > 2)
45	size = Integer.parseInt(args[2]);
46
47	System.out.println("Testing " + mapClass.getName() + " trials: " + numTests + " size: " + size);
48
49
50	absentSize = 8;
51	while (absentSize < size) absentSize <<= 1;
52	absentMask = absentSize - 1;
53	absent = new Integer[absentSize];
54
55	for (int i = 0; i < absentSize; ++i)
56	absent[i] = new Integer(i * 2);
57
58	Integer[] key = new Integer[size];
59	for (int i = 0; i < size; ++i)
60	key[i] = new Integer(i * 2 + 1);
61
62
63	for (int rep = 0; rep < numTests; ++rep) {
64	runTest(newMap(mapClass), key);
65	}
66
67	TestTimer.printStats();
68
69	}
70
71	static NavigableMap newMap(Class cl) {
72	try {
73	NavigableMap m = (NavigableMap)cl.newInstance();
74	return m;
75	} catch(Exception e) {
76	throw new RuntimeException("Can't instantiate " + cl + ": " + e);
77	}
78	}
79
80
81	static void runTest(NavigableMap s, Integer[] key) {
82	shuffle(key);
83	int size = key.length;
84	long startTime = System.currentTimeMillis();
85	test(s, key);
86	long time = System.currentTimeMillis() - startTime;
87	}
88
89	static void t1(String nm, int n, NavigableMap s, Integer[] key, int expect) {
90	int sum = 0;
91	int iters = 4;
92	timer.start(nm, n * iters);
93	for (int j = 0; j < iters; ++j) {
94	for (int i = 0; i < n; i++) {
95	if (s.get(key[i]) != null) ++sum;
96	}
97	}
98	timer.finish();
99	reallyAssert (sum == expect * iters);
100	}
101
102	static void t2(String nm, int n, NavigableMap s, Integer[] key, int expect) {
103	int sum = 0;
104	timer.start(nm, n);
105	for (int i = 0; i < n; i++) {
106	if (s.remove(key[i]) != null) ++sum;
107	}
108	timer.finish();
109	reallyAssert (sum == expect);
110	}
111
112	static void t3(String nm, int n, NavigableMap s, Integer[] key, int expect) {
113	int sum = 0;
114	timer.start(nm, n);
115	for (int i = 0; i < n; i++) {
116	if (s.put(key[i], absent[i & absentMask]) == null) ++sum;
117	}
118	timer.finish();
119	reallyAssert (sum == expect);
120	}
121
122	static void t4(String nm, int n, NavigableMap s, Integer[] key, int expect) {
123	int sum = 0;
124	timer.start(nm, n);
125	for (int i = 0; i < n; i++) {
126	if (s.containsKey(key[i])) ++sum;
127	}
128	timer.finish();
129	reallyAssert (sum == expect);
130	}
131
132	static void t5(String nm, int n, NavigableMap s, Integer[] key, int expect) {
133	int sum = 0;
134	timer.start(nm, n/2);
135	for (int i = n-2; i >= 0; i-=2) {
136	if (s.remove(key[i]) != null) ++sum;
137	}
138	timer.finish();
139	reallyAssert (sum == expect);
140	}
141
142	static void t6(String nm, int n, NavigableMap s, Integer[] k1, Integer[] k2) {
143	int sum = 0;
144	timer.start(nm, n * 2);
145	for (int i = 0; i < n; i++) {
146	if (s.get(k1[i]) != null) ++sum;
147	if (s.get(k2[i & absentMask]) != null) ++sum;
148	}
149	timer.finish();
150	reallyAssert (sum == n);
151	}
152
153	static void t7(String nm, int n, NavigableMap s, Integer[] k1, Integer[] k2) {
154	int sum = 0;
155	timer.start(nm, n * 2);
156	for (int i = 0; i < n; i++) {
157	if (s.containsKey(k1[i])) ++sum;
158	if (s.containsKey(k2[i & absentMask])) ++sum;
159	}
160	timer.finish();
161	reallyAssert (sum == n);
162	}
163
164	static void t8(String nm, int n, NavigableMap s, Integer[] key, int expect) {
165	int sum = 0;
166	timer.start(nm, n);
167	for (int i = 0; i < n; i++) {
168	if (s.get(key[i]) != null) ++sum;
169	}
170	timer.finish();
171	reallyAssert (sum == expect);
172	}
173
174
175	static void t9(NavigableMap s) {
176	int sum = 0;
177	int iters = 20;
178	timer.start("ContainsValue (/n) ", iters * s.size());
179	int step = absentSize / iters;
180	for (int i = 0; i < absentSize; i += step)
181	if (s.containsValue(absent[i])) ++sum;
182	timer.finish();
183	reallyAssert (sum != 0);
184	}
185
186	static void higherTest(NavigableMap s) {
187	int sum = 0;
188	int iters = s.size();
189	timer.start("Higher ", iters);
190	Map.Entry e = s.firstEntry();
191	while (e != null) {
192	++sum;
193	e = s.higherEntry(e.getKey());
194	}
195	timer.finish();
196	reallyAssert (sum == iters);
197	}
198
199	static void lowerTest(NavigableMap s) {
200	int sum = 0;
201	int iters = s.size();
202	timer.start("Lower ", iters);
203	Map.Entry e = s.firstEntry();
204	while (e != null) {
205	++sum;
206	e = s.higherEntry(e.getKey());
207	}
208	timer.finish();
209	reallyAssert (sum == iters);
210	}
211
212	static void ceilingTest(NavigableMap s) {
213	int sum = 0;
214	int iters = s.size();
215	if (iters > absentSize) iters = absentSize;
216	timer.start("Ceiling ", iters);
217	for (int i = 0; i < iters; ++i) {
218	Map.Entry e = s.ceilingEntry(absent[i]);
219	if (e != null)
220	++sum;
221	}
222	timer.finish();
223	reallyAssert (sum == iters);
224	}
225
226	static void floorTest(NavigableMap s) {
227	int sum = 0;
228	int iters = s.size();
229	if (iters > absentSize) iters = absentSize;
230	timer.start("Floor ", iters);
231	for (int i = 1; i < iters; ++i) {
232	Map.Entry e = s.floorEntry(absent[i]);
233	if (e != null)
234	++sum;
235	}
236	timer.finish();
237	reallyAssert (sum == iters-1);
238	}
239
240
241	static void ktest(NavigableMap s, int size, Integer[] key) {
242	timer.start("ContainsKey ", size);
243	Set ks = s.keySet();
244	int sum = 0;
245	for (int i = 0; i < size; i++) {
246	if (ks.contains(key[i])) ++sum;
247	}
248	timer.finish();
249	reallyAssert (sum == size);
250	}
251
252
253	static void ittest1(NavigableMap s, int size) {
254	int sum = 0;
255	timer.start("Iter Key ", size);
256	for (Iterator it = s.keySet().iterator(); it.hasNext(); ) {
257	if(it.next() != MISSING)
258	++sum;
259	}
260	timer.finish();
261	reallyAssert (sum == size);
262	}
263
264	static void ittest2(NavigableMap s, int size) {
265	int sum = 0;
266	timer.start("Iter Value ", size);
267	for (Iterator it = s.values().iterator(); it.hasNext(); ) {
268	if(it.next() != MISSING)
269	++sum;
270	}
271	timer.finish();
272	reallyAssert (sum == size);
273	}
274	static void ittest3(NavigableMap s, int size) {
275	int sum = 0;
276	timer.start("Iter Entry ", size);
277	for (Iterator it = s.entrySet().iterator(); it.hasNext(); ) {
278	if(it.next() != MISSING)
279	++sum;
280	}
281	timer.finish();
282	reallyAssert (sum == size);
283	}
284
285	static void ittest(NavigableMap s, int size) {
286	ittest1(s, size);
287	ittest2(s, size);
288	ittest3(s, size);
289	}
290
291	static void rittest1(NavigableMap s, int size) {
292	int sum = 0;
293	timer.start("Desc Iter Key ", size);
294	for (Iterator it = s.descendingKeySet().iterator(); it.hasNext(); ) {
295	if(it.next() != MISSING)
296	++sum;
297	}
298	timer.finish();
299	reallyAssert (sum == size);
300	}
301
302	static void rittest2(NavigableMap s, int size) {
303	int sum = 0;
304	timer.start("Desc Iter Entry ", size);
305	for (Iterator it = s.descendingEntrySet().iterator(); it.hasNext(); ) {
306	if(it.next() != MISSING)
307	++sum;
308	}
309	timer.finish();
310	reallyAssert (sum == size);
311	}
312
313	static void rittest(NavigableMap s, int size) {
314	rittest1(s, size);
315	rittest2(s, size);
316	}
317
318
319	static void rtest(NavigableMap s, int size) {
320	timer.start("Remove (iterator) ", size);
321	for (Iterator it = s.keySet().iterator(); it.hasNext(); ) {
322	it.next();
323	it.remove();
324	}
325	timer.finish();
326	}
327
328	static void rvtest(NavigableMap s, int size) {
329	timer.start("Remove (iterator) ", size);
330	for (Iterator it = s.values().iterator(); it.hasNext(); ) {
331	it.next();
332	it.remove();
333	}
334	timer.finish();
335	}
336
337
338	static void dtest(NavigableMap s, int size, Integer[] key) {
339	timer.start("Put (putAll) ", size * 2);
340	NavigableMap s2 = null;
341	try {
342	s2 = (NavigableMap) (s.getClass().newInstance());
343	s2.putAll(s);
344	}
345	catch (Exception e) { e.printStackTrace(); return; }
346	timer.finish();
347
348	timer.start("Iter Equals ", size * 2);
349	boolean eqt = s2.equals(s) && s.equals(s2);
350	reallyAssert (eqt);
351	timer.finish();
352
353	timer.start("Iter HashCode ", size * 2);
354	int shc = s.hashCode();
355	int s2hc = s2.hashCode();
356	reallyAssert (shc == s2hc);
357	timer.finish();
358
359	timer.start("Put (present) ", size);
360	s2.putAll(s);
361	timer.finish();
362
363	timer.start("Iter EntrySet contains ", size * 2);
364	Set es2 = s2.entrySet();
365	int sum = 0;
366	for (Iterator i1 = s.entrySet().iterator(); i1.hasNext(); ) {
367	Object entry = i1.next();
368	if (es2.contains(entry)) ++sum;
369	}
370	timer.finish();
371	reallyAssert (sum == size);
372
373	t6("Get ", size, s2, key, absent);
374
375	Object hold = s2.get(key[size-1]);
376	s2.put(key[size-1], absent[0]);
377	timer.start("Iter Equals ", size * 2);
378	eqt = s2.equals(s) && s.equals(s2);
379	reallyAssert (!eqt);
380	timer.finish();
381
382	timer.start("Iter HashCode ", size * 2);
383	int s1h = s.hashCode();
384	int s2h = s2.hashCode();
385	reallyAssert (s1h != s2h);
386	timer.finish();
387
388	s2.put(key[size-1], hold);
389	timer.start("Remove (iterator) ", size * 2);
390	Iterator s2i = s2.entrySet().iterator();
391	Set es = s.entrySet();
392	while (s2i.hasNext())
393	es.remove(s2i.next());
394	timer.finish();
395
396	reallyAssert (s.isEmpty());
397
398	timer.start("Clear ", size);
399	s2.clear();
400	timer.finish();
401	reallyAssert (s2.isEmpty() && s.isEmpty());
402	}
403
404
405
406	static void test(NavigableMap s, Integer[] key) {
407	int size = key.length;
408
409	t3("Put (absent) ", size, s, key, size);
410	t3("Put (present) ", size, s, key, 0);
411	t7("ContainsKey ", size, s, key, absent);
412	t4("ContainsKey ", size, s, key, size);
413	ktest(s, size, key);
414	t4("ContainsKey ", absentSize, s, absent, 0);
415	t6("Get ", size, s, key, absent);
416	t1("Get (present) ", size, s, key, size);
417	t1("Get (absent) ", absentSize, s, absent, 0);
418	t2("Remove (absent) ", absentSize, s, absent, 0);
419	t5("Remove (present) ", size, s, key, size / 2);
420	t3("Put (half present) ", size, s, key, size / 2);
421
422	ittest(s, size);
423	rittest(s, size);
424	higherTest(s);
425	ceilingTest(s);
426	floorTest(s);
427	lowerTest(s);
428	t9(s);
429	rtest(s, size);
430
431	t4("ContainsKey ", size, s, key, 0);
432	t2("Remove (absent) ", size, s, key, 0);
433	t3("Put (presized) ", size, s, key, size);
434	dtest(s, size, key);
435	}
436
437	static class TestTimer {
438	private String name;
439	private long numOps;
440	private long startTime;
441	private String cname;
442
443	static final java.util.TreeMap accum = new java.util.TreeMap();
444
445	static void printStats() {
446	for (Iterator it = accum.entrySet().iterator(); it.hasNext(); ) {
447	Map.Entry e = (Map.Entry)(it.next());
448	Stats stats = ((Stats)(e.getValue()));
449	int n = stats.number;
450	double t;
451	if (n > 0)
452	t = stats.sum / n;
453	else
454	t = stats.least;
455	long nano = Math.round(1000000.0 * t);
456	System.out.println(e.getKey() + ": " + nano);
457	}
458	}
459
460	void start(String name, long numOps) {
461	this.name = name;
462	this.cname = classify();
463	this.numOps = numOps;
464	startTime = System.currentTimeMillis();
465	}
466
467
468	String classify() {
469	if (name.startsWith("Get"))
470	return "Get ";
471	else if (name.startsWith("Put"))
472	return "Put ";
473	else if (name.startsWith("Remove"))
474	return "Remove ";
475	else if (name.startsWith("Iter"))
476	return "Iter ";
477	else
478	return null;
479	}
480
481	void finish() {
482	long endTime = System.currentTimeMillis();
483	long time = endTime - startTime;
484	double timePerOp = ((double)time)/numOps;
485
486	Object st = accum.get(name);
487	if (st == null)
488	accum.put(name, new Stats(timePerOp));
489	else {
490	Stats stats = (Stats) st;
491	stats.sum += timePerOp;
492	stats.number++;
493	if (timePerOp < stats.least) stats.least = timePerOp;
494	}
495
496	if (cname != null) {
497	st = accum.get(cname);
498	if (st == null)
499	accum.put(cname, new Stats(timePerOp));
500	else {
501	Stats stats = (Stats) st;
502	stats.sum += timePerOp;
503	stats.number++;
504	if (timePerOp < stats.least) stats.least = timePerOp;
505	}
506	}
507
508	}
509
510	}
511
512	static class Stats {
513	double sum = 0;
514	double least;
515	int number = 0;
516	Stats(double t) { least = t; }
517	}
518
519	static Random rng = new Random();
520
521	static void shuffle(Integer[] keys) {
522	int size = keys.length;
523	for (int i=size; i>1; i--) {
524	int r = rng.nextInt(i);
525	Integer t = keys[i-1];
526	keys[i-1] = keys[r];
527	keys[r] = t;
528	}
529	}
530
531	}
532