/*
    *    Copyright 2009-2022 the original author or authors.
    *
    *    Licensed under the Apache License, Version 2.0 (the "License");
    *    you may not use this file except in compliance with the License.
    *    You may obtain a copy of the License at
    *
    *       https://www.apache.org/licenses/LICENSE-2.0
    *
   *    Unless required by applicable law or agreed to in writing, software
   *    distributed under the License is distributed on an "AS IS" BASIS,
   *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *    See the License for the specific language governing permissions and
   *    limitations under the License.
   */
  package org.apache.ibatis.type;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.math.BigDecimal;
  
  import org.junit.jupiter.api.Test;
  
  class TypeAliasRegistryTest {
  
    @Test
    void shouldRegisterAndResolveTypeAlias() {
      TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
  
      typeAliasRegistry.registerAlias("rich", "org.apache.ibatis.domain.misc.RichType");
  
      assertEquals("org.apache.ibatis.domain.misc.RichType", typeAliasRegistry.resolveAlias("rich").getName());
    }
  
    @Test
    void shouldFetchArrayType() {
      TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
      assertEquals(Byte[].class, typeAliasRegistry.resolveAlias("byte[]"));
    }
  
    @Test
    void shouldBeAbleToRegisterSameAliasWithSameTypeAgain() {
      TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
      typeAliasRegistry.registerAlias("String", String.class);
      typeAliasRegistry.registerAlias("string", String.class);
    }
  
    @Test
    void shouldNotBeAbleToRegisterSameAliasWithDifferentType() {
      TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
      assertThrows(TypeException.class, () -> typeAliasRegistry.registerAlias("string", BigDecimal.class));
    }
  
    @Test
    void shouldBeAbleToRegisterAliasWithNullType() {
      TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
      typeAliasRegistry.registerAlias("foo", (Class<?>) null);
      assertNull(typeAliasRegistry.resolveAlias("foo"));
    }
  
    @Test
    void shouldBeAbleToRegisterNewTypeIfRegisteredTypeIsNull() {
      TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
      typeAliasRegistry.registerAlias("foo", (Class<?>) null);
      typeAliasRegistry.registerAlias("foo", String.class);
    }
  
    @Test
    void shouldFetchCharType() {
      TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
      assertEquals(Character.class, typeAliasRegistry.resolveAlias("char"));
      assertEquals(Character[].class, typeAliasRegistry.resolveAlias("char[]"));
      assertEquals(char[].class, typeAliasRegistry.resolveAlias("_char[]"));
    }
  
  }