github.com/cloudfoundry/libcfbuildpack@v1.91.23/test/have_plans.go (about)

     1  /*
     2   * Copyright 2018-2020 the original author or authors.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *      https://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  package test
    18  
    19  import (
    20  	"fmt"
    21  	"reflect"
    22  
    23  	"github.com/buildpack/libbuildpack/buildplan"
    24  	"github.com/onsi/gomega/types"
    25  )
    26  
    27  // HavePlans tests that a set of plans is returned from detect.
    28  func HavePlans(plans ...buildplan.Plan) types.GomegaMatcher {
    29  	return &havePlans{plans}
    30  }
    31  
    32  type havePlans struct {
    33  	plans []buildplan.Plan
    34  }
    35  
    36  func (p *havePlans) Match(actual interface{}) (bool, error) {
    37  	a, ok := actual.(buildplan.Plans)
    38  	if !ok {
    39  		return false, fmt.Errorf("actual must be a buildplan.Plans: %s", reflect.TypeOf(a))
    40  	}
    41  
    42  	return reflect.DeepEqual(a, p.expected()), nil
    43  }
    44  
    45  func (p *havePlans) FailureMessage(actual interface{}) (message string) {
    46  	return fmt.Sprintf("Expected\n\t%#v\n to match\n\t%#v\n", actual, p.expected())
    47  }
    48  
    49  func (p *havePlans) NegatedFailureMessage(actual interface{}) (message string) {
    50  	return fmt.Sprintf("Expected\n\t%#v\n not to match\n\t%#v\n", actual, p.expected())
    51  }
    52  
    53  func (p *havePlans) expected() buildplan.Plans {
    54  	e := buildplan.Plans{}
    55  
    56  	if len(p.plans) > 0 {
    57  		e.Plan = p.plans[0]
    58  	}
    59  
    60  	if len(p.plans) > 1 {
    61  		e.Or = p.plans[1:]
    62  	}
    63  
    64  	return e
    65  }