istio

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// Copyright Istio Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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//     http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package helm
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import (
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	"errors"
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	"os"
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	"testing"
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	"helm.sh/helm/v3/pkg/chart"
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)
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func TestRenderManifest(t *testing.T) {
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	tests := []struct {
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		desc                  string
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		inValues              string
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		inChart               chart.Chart
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		startRender           bool
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		inPath                string
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		objFileTemplateReader Renderer
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		wantResult            string
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		wantErr               error
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	}{
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		{
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			desc:                  "not-started",
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			inValues:              "",
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			startRender:           false,
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			inChart:               chart.Chart{},
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			objFileTemplateReader: Renderer{},
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			wantResult:            "",
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			wantErr:               errors.New("fileTemplateRenderer for not started in renderChart"),
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		},
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		{
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			desc: "started-random-template",
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			inValues: `
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description: test
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`,
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			inPath:      "testdata/render/Chart.yaml",
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			startRender: true,
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			objFileTemplateReader: Renderer{
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				namespace:     "name-space",
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				componentName: "foo-component",
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				dir:           "testdata/render",
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				files:         os.DirFS("."),
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			},
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			wantResult: `apiVersion: v1
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description: test
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name: addon
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version: 1.1.0
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appVersion: 1.1.0
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tillerVersion: ">=2.7.2"
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keywords:
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  - istio-addon
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---
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`,
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			wantErr: nil,
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		},
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		{
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			desc:        "bad-file-path",
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			inValues:    "",
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			inPath:      "foo/bar/Chart.yaml",
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			startRender: true,
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			objFileTemplateReader: Renderer{
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				namespace:     "name-space",
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				componentName: "foo-component",
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				dir:           "foo/bar",
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				files:         os.DirFS("."),
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			},
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			wantResult: "",
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			wantErr:    errors.New(`component "foo-component" does not exist`),
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		},
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	}
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	for _, tt := range tests {
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		t.Run(tt.desc, func(t *testing.T) {
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			if tt.startRender {
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				err := tt.objFileTemplateReader.Run()
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				if err != nil && tt.wantErr != nil {
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					if err.Error() != tt.wantErr.Error() {
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						t.Errorf("%s: expected err: %q got %q", tt.desc, tt.wantErr.Error(), err.Error())
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					}
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				}
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			}
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			if res, err := tt.objFileTemplateReader.RenderManifest(tt.inValues); res != tt.wantResult ||
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				((tt.wantErr != nil && err == nil) || (tt.wantErr == nil && err != nil)) {
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				t.Errorf("%s: \nexpected vals: \n%v\n\nexpected err:%v\ngot vals:\n%v\n\n got err %v",
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					tt.desc, tt.wantResult, tt.wantErr, res, err)
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			}
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		})
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	}
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}
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