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53 lines
1.4 KiB
53 lines
1.4 KiB
// Copyright 2011 Aaron Jacobs. All Rights Reserved. |
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// Author: aaronjjacobs@gmail.com (Aaron Jacobs) |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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package oglematchers |
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import ( |
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"errors" |
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"fmt" |
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) |
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// Not returns a matcher that inverts the set of values matched by the wrapped |
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// matcher. It does not transform the result for values for which the wrapped |
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// matcher returns a fatal error. |
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func Not(m Matcher) Matcher { |
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return ¬Matcher{m} |
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} |
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type notMatcher struct { |
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wrapped Matcher |
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} |
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func (m *notMatcher) Matches(c interface{}) (err error) { |
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err = m.wrapped.Matches(c) |
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// Did the wrapped matcher say yes? |
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if err == nil { |
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return errors.New("") |
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} |
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// Did the wrapped matcher return a fatal error? |
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if _, isFatal := err.(*FatalError); isFatal { |
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return err |
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} |
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// The wrapped matcher returned a non-fatal error. |
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return nil |
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} |
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func (m *notMatcher) Description() string { |
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return fmt.Sprintf("not(%s)", m.wrapped.Description()) |
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}
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