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/*
* Copyright 2018 Intel Corporation, Inc
* Copyright 2020,2021 Samsung Electronics, Modifications
*
* 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 helm
import (
"crypto/sha256"
"fmt"
"io/ioutil"
"path/filepath"
"strings"
"testing"
"gopkg.in/yaml.v2"
"k8s.io/apimachinery/pkg/runtime/schema"
)
func TestProcessValues(t *testing.T) {
chartDir := "../../mock_files/mock_charts/testchart2"
profileDir := "../../mock_files/mock_profiles/profile1"
testCases := []struct {
label string
valueFiles []string
values []string
expectedHash string
expectedError string
}{
{
label: "Process Values with Value Files Override",
valueFiles: []string{
filepath.Join(chartDir, "values.yaml"),
filepath.Join(profileDir, "override_values.yaml"),
},
//Hash of a combined values.yaml file that is expected
expectedHash: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
expectedError: "",
},
{
label: "Process Values with Values Pair Override",
valueFiles: []string{
filepath.Join(chartDir, "values.yaml"),
},
//Use the same convention as specified in helm template --set
values: []string{
"service.externalPort=82",
},
//Hash of a combined values.yaml file that is expected
expectedHash: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
expectedError: "",
},
{
label: "Process Values with Both Overrides",
valueFiles: []string{
filepath.Join(chartDir, "values.yaml"),
filepath.Join(profileDir, "override_values.yaml"),
},
//Use the same convention as specified in helm template --set
//Key takes precedence over the value from override_values.yaml
values: []string{
"service.externalPort=82",
},
//Hash of a combined values.yaml file that is expected
expectedHash: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
expectedError: "",
},
{
label: "Process complex Pair Override",
values: []string{
"name={a,b,c}",
"servers[0].port=80",
},
expectedError: "",
expectedHash: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
},
}
h := sha256.New()
for _, testCase := range testCases {
t.Run(testCase.label, func(t *testing.T) {
tc := NewTemplateClient("1.12.3", "testnamespace", "testreleasename")
out, err := tc.ProcessValues(testCase.valueFiles, testCase.values)
if err != nil {
if testCase.expectedError == "" {
t.Fatalf("Got an error %s", err)
}
if strings.Contains(err.Error(), testCase.expectedError) == false {
t.Fatalf("Got unexpected error message %s", err)
}
} else {
//Compute the hash of returned data and compare
gotHash := fmt.Sprintf("%x", h.Sum(nil))
h.Reset()
if gotHash != testCase.expectedHash {
mout, _ := yaml.Marshal(&out)
t.Fatalf("Got unexpected hash '%s' of values.yaml:\n%v", gotHash, string(mout))
}
}
})
}
}
func TestGenerateKubernetesArtifacts(t *testing.T) {
chartDir := "../../mock_files/mock_charts/testchart2"
profileDir := "../../mock_files/mock_profiles/profile1"
testCases := []struct {
label string
chartPath string
valueFiles []string
values []string
expectedHashMap map[string]string
expectedError string
}{
{
label: "Generate artifacts without any overrides",
chartPath: chartDir,
valueFiles: []string{},
values: []string{},
//sha256 hash of the evaluated templates in each chart
expectedHashMap: map[string]string{
"manifest-0": "fcc1083ace82b633e3a0a687d50f532c07e1212b7a42b2c178b65e5768fffcfe",
"manifest-2": "eefeac6ff5430a16a32ae3974857cbe5ff516a1a68566e5edcddd410d60397c0",
"manifest-1": "b88aa963ee3afb9676e9930519d7caa103df1251da48a9351ab4ac0c5730d2af",
},
expectedError: "",
},
{
label: "Generate artifacts with overrides",
chartPath: chartDir,
valueFiles: []string{
filepath.Join(profileDir, "override_values.yaml"),
},
values: []string{
"service.externalPort=82",
},
//sha256 hash of the evaluated templates in each chart
expectedHashMap: map[string]string{
"manifest-0": "fcc1083ace82b633e3a0a687d50f532c07e1212b7a42b2c178b65e5768fffcfe",
"manifest-2": "03ae530e49071d005be78f581b7c06c59119f91f572b28c0c0c06ced8e37bf6e",
"manifest-1": "b88aa963ee3afb9676e9930519d7caa103df1251da48a9351ab4ac0c5730d2af",
},
expectedError: "",
},
{
label: "Generate artifacts from multi-template and empty files v1",
chartPath: "../../mock_files/mock_charts/testchart3",
valueFiles: []string{},
values: []string{
"goingEmpty=false",
},
expectedHashMap: map[string]string{
"manifest-0": "666e8d114981a4b5d13fb799be060aa57e0e48904bba4a410f87a2e827a57ddb",
"manifest-2": "6a5af22538c273b9d4a3156e3b6bb538c655041eae31e93db21a9e178f73ecf0",
},
expectedError: "",
},
{
label: "Generate artifacts from multi-template and empty files v2",
chartPath: "../../mock_files/mock_charts/testchart3",
valueFiles: []string{},
values: []string{
"goingEmpty=true",
},
expectedHashMap: map[string]string{
"manifest-0": "666e8d114981a4b5d13fb799be060aa57e0e48904bba4a410f87a2e827a57ddb",
"manifest-1": "8613e7e7cc0186516b13be37ec7fc321ff89e3abaed0a841773a4eba2d77ce2a",
"manifest-2": "3543ae9563fe62ce4a7446d72e1cd23140d8cc5495f0221430d70e94845c1408",
},
expectedError: "",
},
{
label: "Test simple v3 helm charts support",
chartPath: "../../mock_files/mock_charts/mockv3",
valueFiles: []string{},
values: []string{},
expectedError: "",
expectedHashMap: map[string]string{
"manifest-0": "94975ff704b9cc00a7988fe7fc865665495655ec2584d3e9de2f7e5294c7eb0d",
"dummy-test": "b50bb5f818fe0be332f09401104ae9cea59442e2dabe1a16b4ce21b753177a80",
},
},
}
h := sha256.New()
for _, testCase := range testCases {
t.Run(testCase.label, func(t *testing.T) {
tc := NewTemplateClient("1.12.3", "testnamespace", "testreleasename")
out, _, hooks, err := tc.GenerateKubernetesArtifacts(testCase.chartPath, testCase.valueFiles,
testCase.values)
if err != nil {
if testCase.expectedError == "" {
t.Fatalf("Got an error %s", err)
}
if strings.Contains(err.Error(), testCase.expectedError) == false {
t.Fatalf("Got unexpected error message %s", err)
}
} else if len(testCase.expectedHashMap) != len(out)+len(hooks) {
t.Fatalf("Mismatch of expected files (%d) and returned resources (%d)",
len(testCase.expectedHashMap), len(out)+len(hooks))
} else {
//Compute the hash of returned data and compare
for _, v := range out {
f := v.FilePath
data, err := ioutil.ReadFile(f)
if err != nil {
t.Fatalf("Unable to read file %s", v)
}
h.Write(data)
gotHash := fmt.Sprintf("%x", h.Sum(nil))
h.Reset()
//Find the right hash from expectedHashMap
expectedHash := ""
for k1, v1 := range testCase.expectedHashMap {
if strings.Contains(f, k1) == true {
expectedHash = v1
break
}
}
if gotHash != expectedHash {
t.Fatalf("Got unexpected hash for %s: '%s'; expected: '%s'", f, gotHash, expectedHash)
}
}
for _, v := range hooks {
f := v.KRT.FilePath
data, err := ioutil.ReadFile(f)
if err != nil {
t.Fatalf("Unable to read file %+v", v)
}
h.Write(data)
gotHash := fmt.Sprintf("%x", h.Sum(nil))
h.Reset()
//Find the right hash from expectedHashMap
expectedHash := ""
for k1, v1 := range testCase.expectedHashMap {
if strings.Contains(f, k1) == true {
expectedHash = v1
break
}
}
if gotHash != expectedHash {
t.Fatalf("Got unexpected hash for %s: '%s'; expected: '%s'", f, gotHash, expectedHash)
}
}
}
})
}
}
func TestReverseResources(t *testing.T) {
t.Run("Successfully reverse resources", func(t *testing.T) {
data := []KubernetesResource{
{
GVK: schema.GroupVersionKind{
Group: "apps",
Version: "v1",
Kind: "Deployment"},
Name: "deployment-1",
},
{
GVK: schema.GroupVersionKind{
Group: "apps",
Version: "v1",
Kind: "Deployment"},
Name: "deployment-2",
},
{
GVK: schema.GroupVersionKind{
Group: "",
Version: "v1",
Kind: "Service"},
Name: "service-1",
},
{
GVK: schema.GroupVersionKind{
Group: "",
Version: "v1",
Kind: "Service"},
Name: "service-2",
},
}
reversed := GetReverseK8sResources(data)
if reversed[0] != data[len(data)-1] {
t.Fatalf("Unexpected k8s resource at position 0 %s", reversed[0])
}
})
}
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