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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"
)
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: "c18a70f426933de3c051c996dc34fd537d0131b2d13a2112a2ecff674db6c2f9",
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: "028a3521fc9f8777ea7e67a6de0c51f2c875b88ca91734999657f0ca924ddb7a",
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: "516fab4ab7b76ba2ff35a97c2a79b74302543f532857b945f2fe25e717e755be",
expectedError: "",
},
{
label: "Process complex Pair Override",
values: []string{
"name={a,b,c}",
"servers[0].port=80",
},
expectedError: "",
expectedHash: "50d9401b003f65c1ccfd1c5155106fff88c8201ab8b7d66bd6ffa4fe2883bead",
},
}
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
h.Write(out)
gotHash := fmt.Sprintf("%x", h.Sum(nil))
h.Reset()
if gotHash != testCase.expectedHash {
t.Fatalf("Got unexpected hash '%s' of values.yaml:\n%s", gotHash, out)
}
}
})
}
}
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{
"testchart2/templates/service.yaml": "fdd6a2b6795486f0dd1d8c44379afb5ffe4072c09f9cf6594738e8ded4dd872d",
"subcharta/templates/service.yaml": "570389588fffdb7193ab265888d781f3d751f3a40362533344f9aa7bb93a8bb0",
"subchartb/templates/service.yaml": "5654e03d922e8ec49649b4bbda9dfc9e643b3b7c9c18b602cc7e26fd36a39c2a",
},
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{
"testchart2/templates/service.yaml": "2bb96e791ecb6a3404bc5de3f6c4182aed881630269e2aa6766df38b0f852724",
"subcharta/templates/service.yaml": "570389588fffdb7193ab265888d781f3d751f3a40362533344f9aa7bb93a8bb0",
"subchartb/templates/service.yaml": "5654e03d922e8ec49649b4bbda9dfc9e643b3b7c9c18b602cc7e26fd36a39c2a",
},
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{
"testchart3/templates/multi.yaml-2": "e24cbbefac2c2f700880b8fd041838f2dd48bbc1e099e7c1d2485ae7feb3da0d",
"testchart3/templates/multi.yaml-3": "592a8e5b2c35b8469aa45703a835bc00657bfe36b51eb08427a46e7d22fb1525",
},
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{
"testchart3/templates/multi.yaml-3": "e24cbbefac2c2f700880b8fd041838f2dd48bbc1e099e7c1d2485ae7feb3da0d",
"testchart3/templates/multi.yaml-4": "0bea01e65148584609ede5000c024241ba1c35b440b32ec0a4f7013015715bfe",
"testchart3/templates/multi.yaml-5": "6a5af22538c273b9d4a3156e3b6bb538c655041eae31e93db21a9e178f73ecf0",
},
expectedError: "",
},
{
label: "Test simple v3 helm charts support",
chartPath: "../../mock_files/mock_charts/mockv3",
valueFiles: []string{},
values: []string{},
expectedError: "",
expectedHashMap: map[string]string{
"mockv3/templates/deployment.yaml": "259a027a4957e7428eb1d2e774fa1afaa62449521853f8b2916887040bae2ca4",
},
},
}
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.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 {
//Compute the hash of returned data and compare
for _, v := range out {
f := v.FilePath
data, err := ioutil.ReadFile(f)
if err != nil {
t.Errorf("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)
}
}
}
})
}
}
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