binding/yang-binding/src/test/java/org/opendaylight/yangtools/yang/binding/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.yang.binding;
   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
  23 public class CodeHelpersTest {
  24     @Test
  25     public void testCheckedFieldCast() {
  26         assertNull(CodeHelpers.checkFieldCast(CodeHelpersTest.class, "foo", null));
  27         assertSame(this, CodeHelpers.checkFieldCast(CodeHelpersTest.class, "foo", this));
  28
  29         final IllegalArgumentException iae = assertThrows(IllegalArgumentException.class,
  30             () -> CodeHelpers.checkFieldCast(CodeHelpersTest.class, "foo", new Object()));
  31         assertThat(iae.getCause(), instanceOf(ClassCastException.class));
  32     }
  33
  34     @Test
  35     public void testCheckListFieldCast() {
  36         assertNull(CodeHelpers.checkListFieldCast(CodeHelpersTest.class, "foo", null));
  37         assertSame(List.of(), CodeHelpers.checkListFieldCast(CodeHelpersTest.class, "foo", List.of()));
  38         final var list = List.of(this);
  39         assertSame(list, CodeHelpers.checkListFieldCast(CodeHelpersTest.class, "foo", list));
  40
  41         IllegalArgumentException iae = assertThrows(IllegalArgumentException.class,
  42             () -> CodeHelpers.checkListFieldCast(CodeHelpersTest.class, "foo", Collections.singletonList(null)));
  43         assertThat(iae.getCause(), instanceOf(NullPointerException.class));
  44
  45         iae = assertThrows(IllegalArgumentException.class,
  46             () -> CodeHelpers.checkListFieldCast(CodeHelpersTest.class, "foo", List.of(new Object())));
  47         assertThat(iae.getCause(), instanceOf(ClassCastException.class));
  48     }
  49
  50     @Test
  51     public void testCheckSetFieldCast() {
  52         assertNull(CodeHelpers.checkSetFieldCast(CodeHelpersTest.class, "foo", null));
  53         assertSame(Set.of(), CodeHelpers.checkSetFieldCast(CodeHelpersTest.class, "foo", Set.of()));
  54         final var list = Set.of(this);
  55         assertSame(list, CodeHelpers.checkSetFieldCast(CodeHelpersTest.class, "foo", list));
  56
  57         IllegalArgumentException iae = assertThrows(IllegalArgumentException.class,
  58             () -> CodeHelpers.checkSetFieldCast(CodeHelpersTest.class, "foo", Collections.singleton(null)));
  59         assertThat(iae.getCause(), instanceOf(NullPointerException.class));
  60
  61         iae = assertThrows(IllegalArgumentException.class,
  62             () -> CodeHelpers.checkSetFieldCast(CodeHelpersTest.class, "foo", Set.of(new Object())));
  63         assertThat(iae.getCause(), instanceOf(ClassCastException.class));
  64     }
  65
  66     @Test
  67     public void testCheckEnumName() {
  68         final var ex = assertThrows(IllegalArgumentException.class, () -> CodeHelpers.checkEnum(null, "xyzzy"));
  69         assertEquals("\"xyzzy\" is not a valid name", ex.getMessage());
  70
  71         final var obj = mock(EnumTypeObject.class);
  72         assertSame(obj, CodeHelpers.checkEnum(obj, "xyzzy"));
  73     }
  74
  75     @Test
  76     public void testCheckEnumValue() {
  77         final var ex = assertThrows(IllegalArgumentException.class, () -> CodeHelpers.checkEnum(null, 1234));
  78         assertEquals("1234 is not a valid value", ex.getMessage());
  79
  80         final var obj = mock(EnumTypeObject.class);
  81         assertSame(obj, CodeHelpers.checkEnum(obj, 1234));
  82     }
  83 }