github.com/paketoio/libpak@v1.3.1/binding_test.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 libpak_test
    18  
    19  import (
    20  	"fmt"
    21  	"testing"
    22  
    23  	"github.com/buildpacks/libcnb"
    24  	. "github.com/onsi/gomega"
    25  	"github.com/paketoio/libpak"
    26  	"github.com/sclevine/spec"
    27  )
    28  
    29  func testBinding(t *testing.T, context spec.G, it spec.S) {
    30  	var (
    31  		Expect = NewWithT(t).Expect
    32  
    33  		resolver libpak.BindingResolver
    34  	)
    35  
    36  	it.Before(func() {
    37  		resolver.Bindings = libcnb.Bindings{}
    38  	})
    39  
    40  	it("returns error if binding does not exist", func() {
    41  		_, ok, err := resolver.Resolve(libpak.BindingConstraint{})
    42  		Expect(err).NotTo(HaveOccurred())
    43  		Expect(ok).To(BeFalse())
    44  	})
    45  
    46  	it("returns error if multiple bindings exist", func() {
    47  		resolver.Bindings["test-binding-1"] = libcnb.NewBinding()
    48  		resolver.Bindings["test-binding-2"] = libcnb.NewBinding()
    49  
    50  		_, _, err := resolver.Resolve(libpak.BindingConstraint{})
    51  		Expect(err).To(MatchError(fmt.Errorf("multiple bindings found for %+v in %+v",
    52  			libpak.BindingConstraint{}, resolver.Bindings)))
    53  	})
    54  
    55  	it("filters on name", func() {
    56  		resolver.Bindings["test-binding-1"] = libcnb.NewBinding()
    57  		resolver.Bindings["test-binding-2"] = libcnb.NewBinding()
    58  		resolver.Bindings["test-binding-2"].Metadata["test-key"] = "test-value"
    59  
    60  		expected := libcnb.NewBinding()
    61  		expected.Metadata["test-key"] = "test-value"
    62  
    63  		b, ok, err := resolver.Resolve(libpak.BindingConstraint{Name: "test-binding-2"})
    64  		Expect(err).NotTo(HaveOccurred())
    65  		Expect(ok).To(BeTrue())
    66  		Expect(b).To(Equal(expected))
    67  	})
    68  
    69  	it("filters on kind", func() {
    70  		resolver.Bindings["test-binding-1"] = libcnb.NewBinding()
    71  		resolver.Bindings["test-binding-2"] = libcnb.NewBinding()
    72  		resolver.Bindings["test-binding-2"].Metadata[libcnb.BindingKind] = "test-kind"
    73  		resolver.Bindings["test-binding-2"].Metadata["test-key"] = "test-value"
    74  
    75  		expected := libcnb.NewBinding()
    76  		expected.Metadata[libcnb.BindingKind] = "test-kind"
    77  		expected.Metadata["test-key"] = "test-value"
    78  
    79  		b, ok, err := resolver.Resolve(libpak.BindingConstraint{Kind: "test-kind"})
    80  		Expect(err).NotTo(HaveOccurred())
    81  		Expect(ok).To(BeTrue())
    82  		Expect(b).To(Equal(expected))
    83  
    84  	})
    85  
    86  	it("filters on provider", func() {
    87  		resolver.Bindings["test-binding-1"] = libcnb.NewBinding()
    88  		resolver.Bindings["test-binding-2"] = libcnb.NewBinding()
    89  		resolver.Bindings["test-binding-2"].Metadata[libcnb.BindingProvider] = "test-provider"
    90  		resolver.Bindings["test-binding-2"].Metadata["test-key"] = "test-value"
    91  
    92  		expected := libcnb.NewBinding()
    93  		expected.Metadata[libcnb.BindingProvider] = "test-provider"
    94  		expected.Metadata["test-key"] = "test-value"
    95  
    96  		b, ok, err := resolver.Resolve(libpak.BindingConstraint{Provider: "test-provider"})
    97  		Expect(err).NotTo(HaveOccurred())
    98  		Expect(ok).To(BeTrue())
    99  		Expect(b).To(Equal(expected))
   100  
   101  	})
   102  
   103  	it("filters on all tags", func() {
   104  		resolver.Bindings["test-binding-1"] = libcnb.NewBinding()
   105  		resolver.Bindings["test-binding-2"] = libcnb.NewBinding()
   106  		resolver.Bindings["test-binding-2"].Metadata[libcnb.BindingTags] = "test-tag-1\ntest-tag-2\ntest-tag-3"
   107  		resolver.Bindings["test-binding-2"].Metadata["test-key"] = "test-value"
   108  
   109  		expected := libcnb.NewBinding()
   110  		expected.Metadata[libcnb.BindingTags] = "test-tag-1\ntest-tag-2\ntest-tag-3"
   111  		expected.Metadata["test-key"] = "test-value"
   112  
   113  		b, ok, err := resolver.Resolve(libpak.BindingConstraint{Tags: []string{"test-tag-1", "test-tag-2"}})
   114  		Expect(err).NotTo(HaveOccurred())
   115  		Expect(ok).To(BeTrue())
   116  		Expect(b).To(Equal(expected))
   117  	})
   118  }