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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 oglemock
// Expectation is an expectation for zero or more calls to a mock method with
// particular arguments or sets of arguments.
type Expectation interface {
// Times expresses that a matching method call should happen exactly N times.
// Times must not be called more than once, and must not be called after
// WillOnce or WillRepeatedly.
//
// The full rules for the cardinality of an expectation are as follows:
//
// 1. If an explicit cardinality is set with Times(N), then anything other
// than exactly N matching calls will cause a test failure.
//
// 2. Otherwise, if there are any one-time actions set up, then it is
// expected there will be at least that many matching calls. If there is
// not also a fallback action, then it is expected that there will be
// exactly that many.
//
// 3. Otherwise, if there is a fallback action configured, any number of
// matching calls (including zero) is allowed.
//
// 4. Otherwise, the implicit cardinality is one.
//
Times(n uint) Expectation
// WillOnce configures a "one-time action". WillOnce can be called zero or
// more times, but must be called after any call to Times and before any call
// to WillRepeatedly.
//
// When matching method calls are made on the mock object, one-time actions
// are invoked one per matching call in the order that they were set up until
// they are exhausted. Afterward the fallback action, if any, will be used.
WillOnce(a Action) Expectation
// WillRepeatedly configures a "fallback action". WillRepeatedly can be
// called zero or one times, and must not be called before Times or WillOnce.
//
// Once all one-time actions are exhausted (see above), the fallback action
// will be invoked for any further method calls. If WillRepeatedly is not
// called, the fallback action is implicitly an action that returns zero
// values for the method's return values.
WillRepeatedly(a Action) Expectation
}
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