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// Copyright 2011 Aaron Jacobs. All Rights Reserved.
// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
//
// 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
//
// http://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 ogletest provides a framework for writing expressive unit tests. It
// integrates with the builtin testing package, so it works with the gotest
// command. Unlike the testing package which offers only basic capabilities for
// signalling failures, it offers ways to express expectations and get nice
// failure messages automatically.
//
// For example:
//
// ////////////////////////////////////////////////////////////////////////
// // testing package test
// ////////////////////////////////////////////////////////////////////////
//
// someStr, err := ComputeSomeString()
// if err != nil {
// t.Errorf("ComputeSomeString: expected nil error, got %v", err)
// }
//
// !strings.Contains(someStr, "foo") {
// t.Errorf("ComputeSomeString: expected substring foo, got %v", someStr)
// }
//
// ////////////////////////////////////////////////////////////////////////
// // ogletest test
// ////////////////////////////////////////////////////////////////////////
//
// someStr, err := ComputeSomeString()
// ExpectEq(nil, err)
// ExpectThat(someStr, HasSubstr("foo")
//
// Failure messages require no work from the user, and look like the following:
//
// foo_test.go:103:
// Expected: has substring "foo"
// Actual: "bar baz"
//
package ogletest
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