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omega_number_matchers.go
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/
omega_number_matchers.go
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/*
* Copyright (c) 2002-2020 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j.
*
* 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 test
import (
"fmt"
"math"
"github.com/onsi/gomega/types"
)
func BeNaN() types.GomegaMatcher {
return &floatNaNMatcher{}
}
type floatNaNMatcher struct{}
func (matcher *floatNaNMatcher) Match(actual interface{}) (success bool, err error) {
var f32 float32
var f64 float64
var ok bool
if f32, ok = actual.(float32); ok {
f64 = float64(f32)
} else if f64, ok = actual.(float64); !ok {
return false, fmt.Errorf("expected float32 or float64 values, found: %v", actual)
}
return math.IsNaN(f64), nil
}
func (matcher *floatNaNMatcher) FailureMessage(actual interface{}) (message string) {
return fmt.Sprintf("Expected\n\t%#v\nto be NaN", actual)
}
func (matcher *floatNaNMatcher) NegatedFailureMessage(actual interface{}) (message string) {
return fmt.Sprintf("Expected\n\t%#v\nnot to be NaN", actual)
}