binding/binding-spec/src/test/java/org/opendaylight/yangtools/binding/lib/CodeHelpersTest.java

   1 /*
   2  * Copyright (c) 2020 PANTHEON.tech, s.r.o. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.yangtools.binding.lib;
   9
  10 import static org.hamcrest.CoreMatchers.instanceOf;
  11 import static org.hamcrest.MatcherAssert.assertThat;
  12 import static org.junit.Assert.assertEquals;
  13 import static org.junit.Assert.assertNull;
  14 import static org.junit.Assert.assertSame;
  15 import static org.junit.Assert.assertThrows;
  16 import static org.mockito.Mockito.mock;
  17
  18 import java.util.Collections;
  19 import java.util.List;
  20 import java.util.Set;
  21 import org.junit.Test;
  22 import org.opendaylight.yangtools.binding.EnumTypeObject;
  23
  24 public class CodeHelpersTest {
  25     @Test
  26     public void testCheckedFieldCast() {
  27         assertNull(CodeHelpers.checkFieldCast(CodeHelpersTest.class, "foo", null));
  28         assertSame(this, CodeHelpers.checkFieldCast(CodeHelpersTest.class, "foo", this));
  29
  30         final IllegalArgumentException iae = assertThrows(IllegalArgumentException.class,
  31             () -> CodeHelpers.checkFieldCast(CodeHelpersTest.class, "foo", new Object()));
  32         assertThat(iae.getCause(), instanceOf(ClassCastException.class));
  33     }
  34
  35     @Test
  36     public void testCheckListFieldCast() {
  37         assertNull(CodeHelpers.checkListFieldCast(CodeHelpersTest.class, "foo", null));
  38         assertSame(List.of(), CodeHelpers.checkListFieldCast(CodeHelpersTest.class, "foo", List.of()));
  39         final var list = List.of(this);
  40         assertSame(list, CodeHelpers.checkListFieldCast(CodeHelpersTest.class, "foo", list));
  41
  42         IllegalArgumentException iae = assertThrows(IllegalArgumentException.class,
  43             () -> CodeHelpers.checkListFieldCast(CodeHelpersTest.class, "foo", Collections.singletonList(null)));
  44         assertThat(iae.getCause(), instanceOf(NullPointerException.class));
  45
  46         iae = assertThrows(IllegalArgumentException.class,
  47             () -> CodeHelpers.checkListFieldCast(CodeHelpersTest.class, "foo", List.of(new Object())));
  48         assertThat(iae.getCause(), instanceOf(ClassCastException.class));
  49     }
  50
  51     @Test
  52     public void testCheckSetFieldCast() {
  53         assertNull(CodeHelpers.checkSetFieldCast(CodeHelpersTest.class, "foo", null));
  54         assertSame(Set.of(), CodeHelpers.checkSetFieldCast(CodeHelpersTest.class, "foo", Set.of()));
  55         final var list = Set.of(this);
  56         assertSame(list, CodeHelpers.checkSetFieldCast(CodeHelpersTest.class, "foo", list));
  57
  58         IllegalArgumentException iae = assertThrows(IllegalArgumentException.class,
  59             () -> CodeHelpers.checkSetFieldCast(CodeHelpersTest.class, "foo", Collections.singleton(null)));
  60         assertThat(iae.getCause(), instanceOf(NullPointerException.class));
  61
  62         iae = assertThrows(IllegalArgumentException.class,
  63             () -> CodeHelpers.checkSetFieldCast(CodeHelpersTest.class, "foo", Set.of(new Object())));
  64         assertThat(iae.getCause(), instanceOf(ClassCastException.class));
  65     }
  66
  67     @Test
  68     public void testCheckEnumName() {
  69         final var ex = assertThrows(IllegalArgumentException.class, () -> CodeHelpers.checkEnum(null, "xyzzy"));
  70         assertEquals("\"xyzzy\" is not a valid name", ex.getMessage());
  71
  72         final var obj = mock(EnumTypeObject.class);
  73         assertSame(obj, CodeHelpers.checkEnum(obj, "xyzzy"));
  74     }
  75
  76     @Test
  77     public void testCheckEnumValue() {
  78         final var ex = assertThrows(IllegalArgumentException.class, () -> CodeHelpers.checkEnum(null, 1234));
  79         assertEquals("1234 is not a valid value", ex.getMessage());
  80
  81         final var obj = mock(EnumTypeObject.class);
  82         assertSame(obj, CodeHelpers.checkEnum(obj, 1234));
  83     }
  84 }