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/*-
* ============LICENSE_START==========================================
* OPENECOMP - DCAE
* ===================================================================
* Copyright (c) 2017 AT&T Intellectual Property. All rights reserved.
* ===================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END============================================
*/
package org.openecomp.ncomp.utils;
import java.security.SecureRandom;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import org.openecomp.ncomp.utils.DiffUtil.Edit;
import org.openecomp.ncomp.utils.DiffUtil.EditType;
import junit.framework.TestCase;
public class DiffUtilTest extends TestCase {
private void stringtest (String a, String b, int expect) {
List<String> alist = Arrays.asList(a.split(""));
List<String> blist = Arrays.asList(b.split(""));
int got = DiffUtil.editDist(alist.subList(1, alist.size()), blist.subList(1,blist.size()));
assertEquals("editDist " + a + " " + b, expect, got);
}
private void stringscript (String a, String b, int expect) {
List<String> alist = Arrays.asList(a.split(""));
List<String> blist = Arrays.asList(b.split(""));
List<Edit<String>> script = DiffUtil.editScript(alist.subList(1, alist.size()), blist.subList(1,blist.size()));
assertEquals("editScript " + a + " " + b, expect, script.size());
}
private void stringtest_nochange (String a, String b, int expect) {
List<String> alist = Arrays.asList(a.split(""));
List<String> blist = Arrays.asList(b.split(""));
int got = DiffUtil.editDist(alist.subList(1, alist.size()), blist.subList(1,blist.size()),
new DiffUtil.DiffEqualsNoChange<String>());
assertEquals("editDist " + a + " " + b, expect, got);
}
public void test_simple() {
String a = "simpletest";
String b = "complextest";
stringtest (a, b, 3);
stringtest (b, a, 3);
stringtest ("simple", "dimple", 1);
stringtest ("simple", "sample", 1);
stringtest ("simple", "simply", 1);
stringscript (a, b, 3);
stringscript (b, a, 3);
}
public void test_nochange() {
String a = "simpletest";
String b = "complextest";
stringtest_nochange (a, b, 5);
stringtest_nochange (b, a, 5);
stringtest_nochange ("simple", "dimple", 2);
stringtest_nochange ("simple", "sample", 2);
stringtest_nochange ("simple", "simply", 2);
}
private int gentest (long seed, List<Integer> alist, List<Integer> blist, int n, double pa,
double pb, double pc) {
alist.clear();
blist.clear();
SecureRandom r = new SecureRandom();
r.setSeed(seed);
int dist = 0;
for (int i=0; i<n; i++) {
double p = r.nextDouble();
if (p < pa) {
blist.add(r.nextInt());
dist++;
} else if (p < pa+pb) {
alist.add(r.nextInt());
dist++;
} else if (p < pa+pb+pc) {
alist.add(r.nextInt());
blist.add(r.nextInt());
dist++;
} else {
int d = r.nextInt();
alist.add(d);
blist.add(d);
}
}
return dist;
}
private List<Edit<Integer>> gentestscript (long seed, List<Integer> alist, List<Integer> blist, int n, double pa,
double pb, double pc) {
alist.clear();
blist.clear();
List<Edit<Integer>> ret = new ArrayList<Edit<Integer>>();
SecureRandom r = new SecureRandom();
r.setSeed(seed);
for (int i=0; i<n; i++) {
double p = r.nextDouble();
if (p < pa) {
blist.add(r.nextInt());
ret.add(new Edit<Integer>(EditType.OnlyInB, -1, blist.size()-1, null, blist.get(blist.size()-1)));
} else if (p < pa+pb) {
alist.add(r.nextInt());
ret.add(new Edit<Integer>(EditType.OnlyInA, alist.size()-1, -1, alist.get(alist.size()-1), null));
} else if (p < pa+pb+pc) {
alist.add(r.nextInt());
blist.add(r.nextInt());
ret.add(new Edit<Integer>(EditType.ChangeAtoB, alist.size()-1, blist.size()-1, alist.get(alist.size()-1), blist.get(blist.size()-1)));
} else {
int d = r.nextInt();
alist.add(d);
blist.add(d);
}
}
return ret;
}
public void test_stats() {
List<Integer> alist = new ArrayList<Integer>();
List<Integer> blist = new ArrayList<Integer>();
List<Edit<Integer>> script1;
List<Edit<Integer>> script2;
int d1;
int d2;
script1 = gentestscript(100, alist, blist, 100, 0.01, 0.01, 0.01);
script2 = DiffUtil.editScript(alist, blist);
assertTrue("editScript random 100 0.01", script1.equals(script2));
d1 = script1.size();
d2 = DiffUtil.editDistStats(alist, blist);
assertEquals("editDist random 100 0.01", d1,d2);
d2 = DiffUtil.editDistSimple(alist, blist);
assertEquals("editDistSimple random 100 0.01", d1,d2);
script1 = gentestscript(110, alist, blist, 1000, 0.01, 0.01, 0.01);
script2 = DiffUtil.editScript(alist, blist);
assertTrue("editScript random 1000 0.01", script1.equals(script2));
d1 = script1.size();
d2 = DiffUtil.editDistStats(alist, blist);
assertEquals("editDist random 1000 0.01", d1,d2);
d2 = DiffUtil.editDistSimple(alist, blist);
assertEquals("editDistSimple random 1000 0.01", d1,d2);
d1 = gentest(SecurityUtils.inSecureSeed(120), alist, blist, 1000, 0.1, 0.1, 0.1);
d2 = DiffUtil.editDistStats(alist, blist);
assertEquals("editDist random 1000 0.1", 265,d2);
d2 = DiffUtil.editDistSimple(alist, blist);
assertEquals("editDistSimple random 1000 0.1", 265,d2);
d1 = gentest(SecurityUtils.inSecureSeed(130), alist, blist, 10000, 0.01, 0.01, 0.01);
d2 = DiffUtil.editDistStats(alist, blist);
assertEquals("editDist random 10000 0.01", 296, d2);
// d2 = DiffUtil.editDistSimple(alist, blist);
// assertEquals("editDistSimple random 10000 0.01", 296, d2);
script1 = gentestscript(140, alist, blist, 10000, 0.001, 0.001, 0.001);
script2 = DiffUtil.editScript(alist, blist);
assertTrue("editScript random 10000 0.001", script1.equals(script2));
d1 = script1.size();
d2 = DiffUtil.editDistStats(alist, blist);
assertEquals("editDist random 10000 0.001", d1, d2);
script1 = gentestscript(150, alist, blist, 100000, 0.001, 0.001, 0.001);
script2 = DiffUtil.editScript(alist, blist);
assertTrue("editScript random 100000 0.001", script1.equals(script2));
d1 = script1.size();
d2 = DiffUtil.editDistStats(alist, blist);
assertEquals("editDist random 100000 0.001", d1, d2);
}
public void test_fenceposts() {
String a = "simpletest";
String b = "asimpletest";
String c = "simpletestx";
stringtest (a, b, 1);
stringtest (a, c, 1);
stringtest (b, c, 2);
stringtest (b, a, 1);
stringtest (c, a, 1);
stringtest (c, b, 2);
String x = "aaaaaaaaaa";
String y = "abababababababababab";
String z = "babababababababababa";
stringtest (x, y, 10);
stringtest (y, x, 10);
stringtest (x, z, 10);
stringtest (z, x, 10);
stringtest (y, z, 2);
stringtest (z, y, 2);
stringtest ("", "hello", 5);
stringtest ("hello", "", 5);
stringtest ("", "", 0);
stringtest ("hello", "hello", 0);
}
private static class CompareFirst implements Comparator<String> {
public int compare(String a, String b) {
return a.substring(0,1).compareTo(b.substring(0,1));
}
}
private static class CompareString implements Comparator<String> {
public int compare(String a, String b) {
return a.compareTo(b);
}
}
public void test_sorted() {
CompareFirst cf = new CompareFirst();
CompareString cs = new CompareString();
List<String> a = new ArrayList<String>();
List<String> b = new ArrayList<String>();
a.add("aaa");
a.add("abc");
a.add("cba");
List<Edit<String>> script;
script = DiffUtil.editScriptSorted(a, b);
assertEquals("sorted test 1", 3, script.size());
script = DiffUtil.editScriptSorted(a, b, cs, cf);
assertEquals("sorted test 2", 3, script.size());
b.add("baa");
script = DiffUtil.editScriptSorted(a, b);
assertEquals("sorted test 3", 3, script.size());
script = DiffUtil.mergeReplaces(script);
assertEquals("merged test 3", 3, script.size());
script = DiffUtil.editScriptSorted(a, b, cs, cf);
assertEquals("sorted test 4", 4, script.size());
script = DiffUtil.mergeReplaces(script);
assertEquals("merged test 4", 3, script.size());
b.add("caa");
b.add("cba");
a.add("cca");
script = DiffUtil.editScriptSorted(a, b, cs, cf);
assertEquals("sorted test 5", 4, script.size());
script = DiffUtil.mergeReplaces(script);
assertEquals("merged test 5", 3, script.size());
}
}
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