main_test.go

package main

import (
	"io"
	"os"
	"strings"
	"testing"

	"github.com/andreyvit/diff"
)

var cwd, _ = os.Getwd()

func TestBase(t *testing.T) {
	inputs := []string{"testData/helm", "testData/helm/helmfile.nix", "./testData/helm/helmfile.nix", cwd + "/testData/helm/helmfile.nix", "testData/helm/helmfile.nix"}
	for _, input := range inputs {
		opts = Options{File: input, Env: "test"}
		base, err := findBase()
		if err != nil {
			t.Error("full path failed:", err)
		}
		if base != cwd+"/testData/helm" {
			t.Error("Base not matched: ", base, " != ", cwd+"testData/helm")
		}
	}
}

var output = `environments:
    dev:
        values: []
---
releases:
    - chart: ../chart/
      name: test
`

func TestRender(t *testing.T) {
	hf, err := renderHelmfile(cwd+"/testData/helm", "dev")
	if err != nil {
		t.Error("Failed to parse helmfile: ", err)
	}
	if string(hf) != output {
		t.Errorf("Result not as expected:\n%v", diff.LineDiff(string(hf), output))
	}
}

func TestTemplate(t *testing.T) {
	storeStdout := os.Stdout
	r, w, _ := os.Pipe()
	os.Stdout = w
	callHelmfile([]byte(output), []string{"lint"}, cwd+"/testData/helm", "dev")
	w.Close()
	out, _ := io.ReadAll(r)
	os.Stdout = storeStdout

	// restore the stdout
	if !strings.Contains(string(out), "1 chart(s) linted, 0 chart(s) failed\n") {
		t.Error("Output not matched: ::", string(out), "::")
	}
}

var vals = `{"bad":123,"bar":"true","foo":{"bad":"hello","bar":false,"baz":true,"foo":true}}`

func TestWriteValJson(t *testing.T) {
	f, err := writeValJson(cwd+"/testData/helm", "test", []string{"foo.bar=false", "bad=123", "foo.bad=hello"})
	if err != nil {
		t.Error("Failed to write values file: ", err)
	}
	defer os.Remove(f.Name())
	res, err := os.ReadFile(f.Name())
	if err != nil {
		t.Error("Failed to read file: ", err)
	}
	if string(res) != vals {
		t.Errorf("Result not as expected:\n%v", diff.LineDiff(string(res), vals))
	}
}