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moved examples for 'removing all occurrences of an element from a list' to core-java-collections (#4878)

This commit is contained in:
fanatixan 2018-08-02 08:59:55 +02:00 committed by Grzegorz Piwowarek
parent 6a53e33a0c
commit cc4ab484cc
3 changed files with 211 additions and 209 deletions
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208
core-java-8/src/test/java/com/baeldung/list/RemoveAllUnitTest.java
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@ -1,208 +0,0 @@
package com.baeldung.list;
import static com.baeldung.list.RemoveAll.removeWithCallingRemoveUntilModifies;
import static com.baeldung.list.RemoveAll.removeWithCollectingAndReturningRemainingElements;
import static com.baeldung.list.RemoveAll.removeWithCollectingRemainingElementsAndAddingToOriginalList;
import static com.baeldung.list.RemoveAll.removeWithForEachLoop;
import static com.baeldung.list.RemoveAll.removeWithForLoopDecrementOnRemove;
import static com.baeldung.list.RemoveAll.removeWithForLoopIncrementIfRemains;
import static com.baeldung.list.RemoveAll.removeWithIterator;
import static com.baeldung.list.RemoveAll.removeWithRemoveIf;
import static com.baeldung.list.RemoveAll.removeWithStandardForLoopUsingIndex;
import static com.baeldung.list.RemoveAll.removeWithStreamFilter;
import static com.baeldung.list.RemoveAll.*;
import static org.assertj.core.api.Assertions.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.ConcurrentModificationException;
import java.util.List;
import org.junit.Test;
public class RemoveAllUnitTest {
private List<Integer> list(Integer... elements) {
return new ArrayList<>(Arrays.asList(elements));
}
@Test
public void givenAList_whenRemovingElementsWithWhileLoopUsingPrimitiveElement_thenTheResultCorrect() {
// given
List<Integer> list = list(1, 2, 3);
int valueToRemove = 1;
// when
assertThatThrownBy(() -> removeWithWhileLoopPrimitiveElement(list, valueToRemove))
.isInstanceOf(IndexOutOfBoundsException.class);
}
@Test
public void givenAList_whenRemovingElementsWithWhileLoopUsingNonPrimitiveElement_thenTheResultCorrect() {
// given
List<Integer> list = list(1, 2, 3);
int valueToRemove = 1;
// when
removeWithWhileLoopNonPrimitiveElement(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithWhileLoopStoringFirstOccurrenceIndex_thenTheResultCorrect() {
// given
List<Integer> list = list(1, 2, 3);
int valueToRemove = 1;
// when
removeWithWhileLoopStoringFirstOccurrenceIndex(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithCallingRemoveUntilModifies_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithCallingRemoveUntilModifies(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAListWithoutDuplication_whenRemovingElementsWithStandardForLoopUsingIndex_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 2, 3);
int valueToRemove = 1;
// when
removeWithStandardForLoopUsingIndex(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAListWithAdjacentElements_whenRemovingElementsWithStandardForLoop_thenTheResultIsInCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithStandardForLoopUsingIndex(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(1, 2, 3));
}
@Test
public void givenAListWithAdjacentElements_whenRemovingElementsWithForLoopAndDecrementOnRemove_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithForLoopDecrementOnRemove(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAListWithAdjacentElements_whenRemovingElementsWithForLoopAndIncrementIfRemains_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithForLoopIncrementIfRemains(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithForEachLoop_thenExceptionIsThrown() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
assertThatThrownBy(() -> removeWithForEachLoop(list, valueToRemove))
.isInstanceOf(ConcurrentModificationException.class);
}
@Test
public void givenAList_whenRemovingElementsWithIterator_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithIterator(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithCollectingAndReturningRemainingElements_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
List<Integer> result = removeWithCollectingAndReturningRemainingElements(list, valueToRemove);
// then
assertThat(result).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithCollectingRemainingAndAddingToOriginalList_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithCollectingRemainingElementsAndAddingToOriginalList(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithStreamFilter_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
List<Integer> result = removeWithStreamFilter(list, valueToRemove);
// then
assertThat(result).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithCallingRemoveIf_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithRemoveIf(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
}

2
core-java-8/src/main/java/com/baeldung/list/RemoveAll.java → core-java-collections/src/main/java/com/baeldung/list/removeall/RemoveAll.java
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@ -1,4 +1,4 @@
package com.baeldung.list; package com.baeldung.list.removeall;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Iterator; import java.util.Iterator;

210
core-java-collections/src/test/java/com/baeldung/list/removeall/RemoveAllUnitTest.java Normal file
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@ -0,0 +1,210 @@
package com.baeldung.list.removeall;
import static com.baeldung.list.removeall.RemoveAll.removeWithCallingRemoveUntilModifies;
import static com.baeldung.list.removeall.RemoveAll.removeWithCollectingAndReturningRemainingElements;
import static com.baeldung.list.removeall.RemoveAll.removeWithCollectingRemainingElementsAndAddingToOriginalList;
import static com.baeldung.list.removeall.RemoveAll.removeWithForEachLoop;
import static com.baeldung.list.removeall.RemoveAll.removeWithForLoopDecrementOnRemove;
import static com.baeldung.list.removeall.RemoveAll.removeWithForLoopIncrementIfRemains;
import static com.baeldung.list.removeall.RemoveAll.removeWithIterator;
import static com.baeldung.list.removeall.RemoveAll.removeWithRemoveIf;
import static com.baeldung.list.removeall.RemoveAll.removeWithStandardForLoopUsingIndex;
import static com.baeldung.list.removeall.RemoveAll.removeWithStreamFilter;
import static com.baeldung.list.removeall.RemoveAll.removeWithWhileLoopNonPrimitiveElement;
import static com.baeldung.list.removeall.RemoveAll.removeWithWhileLoopPrimitiveElement;
import static com.baeldung.list.removeall.RemoveAll.removeWithWhileLoopStoringFirstOccurrenceIndex;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.ConcurrentModificationException;
import java.util.List;
import org.junit.Test;
public class RemoveAllUnitTest {
private List<Integer> list(Integer... elements) {
return new ArrayList<>(Arrays.asList(elements));
}
@Test
public void givenAList_whenRemovingElementsWithWhileLoopUsingPrimitiveElement_thenTheResultCorrect() {
// given
List<Integer> list = list(1, 2, 3);
int valueToRemove = 1;
// when
assertThatThrownBy(() -> removeWithWhileLoopPrimitiveElement(list, valueToRemove))
.isInstanceOf(IndexOutOfBoundsException.class);
}
@Test
public void givenAList_whenRemovingElementsWithWhileLoopUsingNonPrimitiveElement_thenTheResultCorrect() {
// given
List<Integer> list = list(1, 2, 3);
int valueToRemove = 1;
// when
removeWithWhileLoopNonPrimitiveElement(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithWhileLoopStoringFirstOccurrenceIndex_thenTheResultCorrect() {
// given
List<Integer> list = list(1, 2, 3);
int valueToRemove = 1;
// when
removeWithWhileLoopStoringFirstOccurrenceIndex(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithCallingRemoveUntilModifies_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithCallingRemoveUntilModifies(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAListWithoutDuplication_whenRemovingElementsWithStandardForLoopUsingIndex_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 2, 3);
int valueToRemove = 1;
// when
removeWithStandardForLoopUsingIndex(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAListWithAdjacentElements_whenRemovingElementsWithStandardForLoop_thenTheResultIsInCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithStandardForLoopUsingIndex(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(1, 2, 3));
}
@Test
public void givenAListWithAdjacentElements_whenRemovingElementsWithForLoopAndDecrementOnRemove_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithForLoopDecrementOnRemove(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAListWithAdjacentElements_whenRemovingElementsWithForLoopAndIncrementIfRemains_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithForLoopIncrementIfRemains(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithForEachLoop_thenExceptionIsThrown() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
assertThatThrownBy(() -> removeWithForEachLoop(list, valueToRemove))
.isInstanceOf(ConcurrentModificationException.class);
}
@Test
public void givenAList_whenRemovingElementsWithIterator_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithIterator(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithCollectingAndReturningRemainingElements_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
List<Integer> result = removeWithCollectingAndReturningRemainingElements(list, valueToRemove);
// then
assertThat(result).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithCollectingRemainingAndAddingToOriginalList_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithCollectingRemainingElementsAndAddingToOriginalList(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithStreamFilter_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
List<Integer> result = removeWithStreamFilter(list, valueToRemove);
// then
assertThat(result).isEqualTo(list(2, 3));
}
@Test
public void givenAList_whenRemovingElementsWithCallingRemoveIf_thenTheResultIsCorrect() {
// given
List<Integer> list = list(1, 1, 2, 3);
int valueToRemove = 1;
// when
removeWithRemoveIf(list, valueToRemove);
// then
assertThat(list).isEqualTo(list(2, 3));
}
}