github.com/brandond/cni@v0.8.1/pkg/version/conf_test.go (about)

     1  // Copyright 2016 CNI authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package version_test
    16  
    17  import (
    18  	"github.com/containernetworking/cni/pkg/version"
    19  
    20  	. "github.com/onsi/ginkgo"
    21  	. "github.com/onsi/gomega"
    22  )
    23  
    24  var _ = Describe("Decoding the version of network config", func() {
    25  	var (
    26  		decoder     *version.ConfigDecoder
    27  		configBytes []byte
    28  	)
    29  
    30  	BeforeEach(func() {
    31  		decoder = &version.ConfigDecoder{}
    32  		configBytes = []byte(`{ "cniVersion": "4.3.2" }`)
    33  	})
    34  
    35  	Context("when the version is explicit", func() {
    36  		It("returns the version", func() {
    37  			version, err := decoder.Decode(configBytes)
    38  			Expect(err).NotTo(HaveOccurred())
    39  
    40  			Expect(version).To(Equal("4.3.2"))
    41  		})
    42  	})
    43  
    44  	Context("when the version is not present in the config", func() {
    45  		BeforeEach(func() {
    46  			configBytes = []byte(`{ "not-a-version-field": "foo" }`)
    47  		})
    48  
    49  		It("assumes the config is version 0.1.0", func() {
    50  			version, err := decoder.Decode(configBytes)
    51  			Expect(err).NotTo(HaveOccurred())
    52  
    53  			Expect(version).To(Equal("0.1.0"))
    54  		})
    55  	})
    56  
    57  	Context("when the config data is malformed", func() {
    58  		BeforeEach(func() {
    59  			configBytes = []byte(`{{{`)
    60  		})
    61  
    62  		It("returns a useful error", func() {
    63  			_, err := decoder.Decode(configBytes)
    64  			Expect(err).To(MatchError(HavePrefix(
    65  				"decoding version from network config: invalid character",
    66  			)))
    67  		})
    68  	})
    69  })