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Fix JavaSortingUnitTest

This commit is contained in:
pivovarit 2017-05-16 09:39:39 +03:00
parent adb4b9bfdf
commit 15fe1f0996
1 changed files with 13 additions and 54 deletions
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67
core-java/src/test/java/org/baeldung/java/sorting/JavaSortingUnitTest.java
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@ -1,34 +1,20 @@
package org.baeldung.java.sorting; package org.baeldung.java.sorting;
import static org.junit.Assert.assertTrue; import com.google.common.primitives.Ints;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.commons.lang3.ArrayUtils; import org.apache.commons.lang3.ArrayUtils;
import org.junit.Before; import org.junit.Before;
import org.junit.Test; import org.junit.Test;
import com.google.common.primitives.Ints; import java.util.*;
import java.util.Map.Entry;
import static org.junit.Assert.assertTrue;
public class JavaSortingUnitTest { public class JavaSortingUnitTest {
private int[] toSort; private int[] toSort;
private int[] sortedInts; private int[] sortedInts;
private int[] sortedRangeInts; private int[] sortedRangeInts;
// private Integer [] integers;
// private Integer [] sortedIntegers;
// private List<Integer> integersList;
// private List<Integer> sortedIntegersList;
private Employee[] employees; private Employee[] employees;
private Employee[] employeesSorted; private Employee[] employeesSorted;
private Employee[] employeesSortedByAge; private Employee[] employeesSortedByAge;
@ -41,19 +27,11 @@ public class JavaSortingUnitTest {
sortedInts = new int[] { 1, 5, 7, 66, 88, 89, 123, 200, 255 }; sortedInts = new int[] { 1, 5, 7, 66, 88, 89, 123, 200, 255 };
sortedRangeInts = new int[] { 5, 1, 89, 7, 88, 200, 255, 123, 66 }; sortedRangeInts = new int[] { 5, 1, 89, 7, 88, 200, 255, 123, 66 };
// integers = new Integer[]
// { 5, 1, 89, 255, 7, 88, 200, 123, 66 };
// sortedIntegers = new Integer[]
// {1, 5, 7, 66, 88, 89, 123, 200, 255};
//
// integersList = Arrays.asList(new Integer[] { 5, 1, 89, 255, 7, 88, 200, 123, 66 });
// sortedIntegersList = Arrays.asList(new Integer[] {1, 5, 7, 66, 88, 89, 123, 200, 255});
employees = new Employee[] { new Employee("John", 23, 5000), new Employee("Steve", 26, 6000), new Employee("Frank", 33, 7000), new Employee("Earl", 43, 10000), new Employee("Jessica", 23, 4000), new Employee("Pearl", 33, 6000) }; employees = new Employee[] { new Employee("John", 23, 5000), new Employee("Steve", 26, 6000), new Employee("Frank", 33, 7000), new Employee("Earl", 43, 10000), new Employee("Jessica", 23, 4000), new Employee("Pearl", 33, 6000) };
employeesSorted = new Employee[] { new Employee("Earl", 43, 10000), new Employee("Frank", 33, 70000), new Employee("Jessica", 23, 4000), new Employee("John", 23, 5000), new Employee("Pearl", 33, 4000), new Employee("Steve", 26, 6000) }; employeesSorted = new Employee[] { new Employee("Earl", 43, 10000), new Employee("Frank", 33, 70000), new Employee("Jessica", 23, 4000), new Employee("John", 23, 5000), new Employee("Pearl", 33, 4000), new Employee("Steve", 26, 6000) };
employeesSortedByAge = new Employee[] { new Employee("John", 23, 5000), new Employee("Jessica", 23, 4000), new Employee("Steve", 26, 6000), new Employee("Frank", 33, 70000), new Employee("Pearl", 33, 4000), new Employee("Earl", 43, 10000) }; employeesSortedByAge = new Employee[] { new Employee("John", 23, 5000), new Employee("Jessica", 23, 4000), new Employee("Steve", 26, 6000), new Employee("Frank", 33, 70000), new Employee("Pearl", 33, 4000), new Employee("Earl", 43, 10000) };
HashMap<Integer, String> map = new HashMap<>(); map = new HashMap<>();
map.put(55, "John"); map.put(55, "John");
map.put(22, "Apple"); map.put(22, "Apple");
map.put(66, "Earl"); map.put(66, "Earl");
@ -73,12 +51,7 @@ public class JavaSortingUnitTest {
@Test @Test
public void givenIntegerArray_whenUsingSort_thenSortedArray() { public void givenIntegerArray_whenUsingSort_thenSortedArray() {
Integer[] integers = ArrayUtils.toObject(toSort); Integer[] integers = ArrayUtils.toObject(toSort);
Arrays.sort(integers, new Comparator<Integer>() { Arrays.sort(integers, Comparator.comparingInt(a -> a));
@Override
public int compare(Integer a, Integer b) {
return a - b;
}
});
assertTrue(Arrays.equals(integers, ArrayUtils.toObject(sortedInts))); assertTrue(Arrays.equals(integers, ArrayUtils.toObject(sortedInts)));
} }
@ -86,9 +59,7 @@ public class JavaSortingUnitTest {
@Test @Test
public void givenArray_whenUsingSortWithLambdas_thenSortedArray() { public void givenArray_whenUsingSortWithLambdas_thenSortedArray() {
Integer[] integersToSort = ArrayUtils.toObject(toSort); Integer[] integersToSort = ArrayUtils.toObject(toSort);
Arrays.sort(integersToSort, (a, b) -> { Arrays.sort(integersToSort, Comparator.comparingInt(a -> a));
return a - b;
});
assertTrue(Arrays.equals(integersToSort, ArrayUtils.toObject(sortedInts))); assertTrue(Arrays.equals(integersToSort, ArrayUtils.toObject(sortedInts)));
} }
@ -136,12 +107,7 @@ public class JavaSortingUnitTest {
Integer[] sortedKeys = new Integer[] { 6, 12, 22, 55, 66, 77 }; Integer[] sortedKeys = new Integer[] { 6, 12, 22, 55, 66, 77 };
List<Map.Entry<Integer, String>> entries = new ArrayList<>(map.entrySet()); List<Map.Entry<Integer, String>> entries = new ArrayList<>(map.entrySet());
Collections.sort(entries, new Comparator<Entry<Integer, String>>() { entries.sort(Comparator.comparing(Entry::getKey));
@Override
public int compare(Entry<Integer, String> o1, Entry<Integer, String> o2) {
return o1.getKey().compareTo(o2.getKey());
}
});
HashMap<Integer, String> sortedMap = new LinkedHashMap<>(); HashMap<Integer, String> sortedMap = new LinkedHashMap<>();
for (Map.Entry<Integer, String> entry : entries) { for (Map.Entry<Integer, String> entry : entries) {
sortedMap.put(entry.getKey(), entry.getValue()); sortedMap.put(entry.getKey(), entry.getValue());
@ -155,12 +121,7 @@ public class JavaSortingUnitTest {
String[] sortedValues = new String[] { "Apple", "Earl", "George", "John", "Pearl", "Rocky" }; String[] sortedValues = new String[] { "Apple", "Earl", "George", "John", "Pearl", "Rocky" };
List<Map.Entry<Integer, String>> entries = new ArrayList<>(map.entrySet()); List<Map.Entry<Integer, String>> entries = new ArrayList<>(map.entrySet());
Collections.sort(entries, new Comparator<Entry<Integer, String>>() { entries.sort(Comparator.comparing(Entry::getValue));
@Override
public int compare(Entry<Integer, String> o1, Entry<Integer, String> o2) {
return o1.getValue().compareTo(o2.getValue());
}
});
HashMap<Integer, String> sortedMap = new LinkedHashMap<>(); HashMap<Integer, String> sortedMap = new LinkedHashMap<>();
for (Map.Entry<Integer, String> entry : entries) { for (Map.Entry<Integer, String> entry : entries) {
sortedMap.put(entry.getKey(), entry.getValue()); sortedMap.put(entry.getKey(), entry.getValue());
@ -172,12 +133,10 @@ public class JavaSortingUnitTest {
@Test @Test
public void givenSet_whenUsingSort_thenSortedSet() { public void givenSet_whenUsingSort_thenSortedSet() {
HashSet<Integer> integersSet = new LinkedHashSet<>(Ints.asList(toSort)); HashSet<Integer> integersSet = new LinkedHashSet<>(Ints.asList(toSort));
HashSet<Integer> descSortedIntegersSet = new LinkedHashSet<>(Arrays.asList(new Integer[] { 255, 200, 123, 89, 88, 66, 7, 5, 1 })); HashSet<Integer> descSortedIntegersSet = new LinkedHashSet<>(Arrays.asList(255, 200, 123, 89, 88, 66, 7, 5, 1));
ArrayList<Integer> list = new ArrayList<Integer>(integersSet); ArrayList<Integer> list = new ArrayList<>(integersSet);
Collections.sort(list, (i1, i2) -> { list.sort((i1, i2) -> i2 - i1);
return i2 - i1;
});
integersSet = new LinkedHashSet<>(list); integersSet = new LinkedHashSet<>(list);
assertTrue(Arrays.equals(integersSet.toArray(), descSortedIntegersSet.toArray())); assertTrue(Arrays.equals(integersSet.toArray(), descSortedIntegersSet.toArray()));