1/*
2 * Copyright 2001-2009 Artima, Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package org.scalatest.matchers
17
18import org.scalatest._
19
20class ShouldThrowSpec extends WordSpec with ShouldMatchers {
21
22  "The evaluating { ... } should produce [ExceptionType] syntax" should {
23
24    "fail if a different exception is thrown" in {
25      val caught1 = intercept[TestFailedException] {
26        evaluating { "hi".charAt(-1) } should produce [IllegalArgumentException]
27      }
28      assert(caught1.getMessage === "Expected exception java.lang.IllegalArgumentException to be thrown, but java.lang.StringIndexOutOfBoundsException was thrown.")
29    }
30
31    "fail if no exception is thrown" in {
32      val caught2 = intercept[TestFailedException] {
33        evaluating { "hi" } should produce [IllegalArgumentException]
34      }
35      assert(caught2.getMessage === "Expected exception java.lang.IllegalArgumentException to be thrown, but no exception was thrown.")
36    }
37
38    "succeed if the expected exception is thrown" in {
39      evaluating { "hi".charAt(-1) } should produce [StringIndexOutOfBoundsException]
40    }
41
42    "succeed if a subtype of the expected exception is thrown, where the expected type is a class" in {
43      evaluating { "hi".charAt(-1) } should produce [Exception]
44    }
45
46    "succeed if a subtype of the expected exception is thrown, where the expected type is a trait" in {
47      trait Excitement
48      def kaboom() { throw new Exception with Excitement }
49      evaluating { kaboom() } should produce [Excitement]
50    }
51
52    "return the caught exception" in {
53      def kaboom() { throw new Exception("howdy") }
54      val thrown = evaluating { kaboom() } should produce [Exception]
55      thrown.getMessage should be === "howdy"
56    }
57  }
58}
59