github.com/petergtz/pegomock@v2.9.1-0.20230424204322-eb0e044013df+incompatible/testing_t_support.go (about)

     1  // Copyright (c) 2013-2014 Onsi Fakhouri
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining
     4  // a copy of this software and associated documentation files (the
     5  // "Software"), to deal in the Software without restriction, including
     6  // without limitation the rights to use, copy, modify, merge, publish,
     7  // distribute, sublicense, and/or sell copies of the Software, and to
     8  // permit persons to whom the Software is furnished to do so, subject to
     9  // the following conditions:
    10  //
    11  // The above copyright notice and this permission notice shall be
    12  // included in all copies or substantial portions of the Software.
    13  //
    14  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    15  // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    16  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    17  // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
    18  // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
    19  // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
    20  // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    21  
    22  package pegomock
    23  
    24  import (
    25  	"regexp"
    26  	"runtime/debug"
    27  	"strings"
    28  )
    29  
    30  type testingT interface {
    31  	Errorf(format string, args ...interface{})
    32  }
    33  
    34  func BuildTestingTFailHandler(t testingT) FailHandler {
    35  	return func(message string, callerSkip ...int) {
    36  		skip := 1
    37  		if len(callerSkip) > 0 {
    38  			skip = callerSkip[0]
    39  		}
    40  		stackTrace := pruneStack(string(debug.Stack()), skip)
    41  		t.Errorf("\n%s\n%s", stackTrace, message)
    42  	}
    43  }
    44  
    45  func pruneStack(fullStackTrace string, skip int) string {
    46  	stack := strings.Split(fullStackTrace, "\n")
    47  	if len(stack) > 2*(skip+1) {
    48  		stack = stack[2*(skip+1):]
    49  	}
    50  	prunedStack := []string{}
    51  	re := regexp.MustCompile(`\/ginkgo\/|\/pkg\/testing\/|\/pkg\/runtime\/`)
    52  	for i := 0; i < len(stack)/2; i++ {
    53  		if !re.Match([]byte(stack[i*2])) {
    54  			prunedStack = append(prunedStack, stack[i*2])
    55  			prunedStack = append(prunedStack, stack[i*2+1])
    56  		}
    57  	}
    58  	return strings.Join(prunedStack, "\n")
    59  }
    60  
    61  func WithT(t testingT) Option {
    62  	return WithFailHandler(BuildTestingTFailHandler(t))
    63  }