Serge NOEL
96 lines
2.9 KiB
Java
96 lines
2.9 KiB
Java
package jmri.util;
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import org.junit.jupiter.api.*;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertNotNull;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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/**
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* This is here so that SpotBugs can check proper static performance.
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* The {@link NonNullArrayList} class and this test class should always
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* show completely clean in SpotBugs.
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*
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* @author Bob Jacobsen Copyright (C) 2017
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*/
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public class NonNullArrayListTest {
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@Test
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public void testCTor() {
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NonNullArrayList<String> t = new NonNullArrayList<>();
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assertNotNull( t, "exists");
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}
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@Test
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public void testAddAndGet() {
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NonNullArrayList<Integer> t = new NonNullArrayList<>();
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t.add(100);
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assertNotNull( t.get(0), "[0]");
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assertNotNull( t.get(0).toString(), "SpotBugs should complain about dereference");
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}
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@Test
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public void testNotAddNull() {
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NonNullArrayList<Integer> t = new NonNullArrayList<>();
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Exception ex = assertThrows(IllegalArgumentException.class,
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() -> { addNull(t); } );
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assertEquals("NonNullArrayList.addAll cannot add null item", ex.getMessage());
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assertEquals(0, t.size());
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}
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@SuppressWarnings("null") // passing null to non-null to check exception
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private void addNull(NonNullArrayList<Integer> t){
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t.add(null);
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}
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@Test
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public void testNotAddIndexNull() {
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NonNullArrayList<Integer> t = new NonNullArrayList<>();
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Exception ex = Assertions.assertThrows(IllegalArgumentException.class,
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() -> { addZeroNull(t); } );
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assertEquals("NonNullArrayList.addAll cannot add null item", ex.getMessage());
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assertEquals(0, t.size());
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}
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@SuppressWarnings("null") // passing null to non-null to check exception
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private void addZeroNull(NonNullArrayList<Integer> t){
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t.add(0, null);
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}
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@Test
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public void testNotSetNull() {
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NonNullArrayList<Integer> t = new NonNullArrayList<>();
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Exception ex = Assertions.assertThrows(IllegalArgumentException.class,
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() -> { setZeroNull(t); } );
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assertEquals("NonNullArrayList.addAll cannot set item null", ex.getMessage());
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assertEquals(0, t.size());
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}
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@SuppressWarnings("null") // passing null to non-null to check exception
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private void setZeroNull(NonNullArrayList<Integer> t){
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t.set(0, null);
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}
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@Test
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public void testLoop() {
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NonNullArrayList<Integer> t = new NonNullArrayList<>();
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t.add(100);
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for (Integer s : t) {
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assertNotNull( t.get(0), "s");
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assertNotNull( s.toString(), "SpotBugs should complain about dereference");
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assertNotNull(t.get(0).toString());
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}
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}
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@BeforeEach
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public void setUp() {
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JUnitUtil.setUp();
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}
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@AfterEach
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public void tearDown() {
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JUnitUtil.tearDown();
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}
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}
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