255de605b1
- Cover six-level precedence, env mapping, .env, Set/Persist/Reload - Require HasConfig merge before plugin Register - Assert hello command observes overlay and plugin defaults
92 lines
2.2 KiB
Go
92 lines
2.2 KiB
Go
package main
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import (
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"bytes"
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"crypto/sha256"
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"os"
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"os/exec"
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"strings"
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"testing"
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)
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func TestGreeterHelloPrintsLayeredConfig(t *testing.T) {
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got := runHello(t, nil)
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want := "name=hello-app posts_per_page=10 debug=false"
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if got != want {
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t.Fatalf("output = %q, want %q", got, want)
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}
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}
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func TestGreeterHelloSeesDevelopmentOverlay(t *testing.T) {
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got := runHello(t, map[string]string{"SUMMER_ENV": "development"})
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want := "name=hello-dev posts_per_page=10 debug=true"
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if got != want {
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t.Fatalf("output = %q, want %q", got, want)
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}
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}
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func TestGreeterHelloSeesEnvVarOverrideOfPluginDefault(t *testing.T) {
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got := runHello(t, map[string]string{
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"SUMMER_GOLEM15__HELLO__POSTS_PER_PAGE": "25",
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})
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want := "name=hello-app posts_per_page=25 debug=false"
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if got != want {
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t.Fatalf("output = %q, want %q", got, want)
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}
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}
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func runHello(t *testing.T, env map[string]string) string {
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t.Helper()
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for k, v := range env {
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t.Setenv(k, v)
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}
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var buf bytes.Buffer
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if err := run([]string{"greeter:hello"}, &buf); err != nil {
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t.Fatalf("greeter:hello: %v", err)
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}
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return strings.TrimSpace(buf.String())
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}
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func TestBuiltBinaryGreeterHello(t *testing.T) {
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first := runSummerBuild(t)
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h1 := generatedHash(t)
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second := runSummerBuild(t)
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h2 := generatedHash(t)
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if h1 != h2 {
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t.Fatalf("generated files changed on second build\nfirst:\n%s\nsecond:\n%s", first, second)
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}
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cmd := exec.Command("./bin/hello", "greeter:hello")
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out, err := cmd.CombinedOutput()
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if err != nil {
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t.Fatalf("bin/hello greeter:hello: %v\n%s", err, out)
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}
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if got := strings.TrimSpace(string(out)); got != "name=hello-app posts_per_page=10 debug=false" {
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t.Fatalf("output = %q, want layered production config", got)
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}
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}
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func runSummerBuild(t *testing.T) string {
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t.Helper()
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cmd := exec.Command("go", "run", "../../cmd/summer", "build")
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cmd.Dir = "."
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out, err := cmd.CombinedOutput()
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if err != nil {
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t.Fatalf("summer build: %v\n%s", err, out)
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}
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return string(out)
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}
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func generatedHash(t *testing.T) [32]byte {
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t.Helper()
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var buf bytes.Buffer
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for _, name := range []string{"main.go", "plugins.gen.go"} {
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body, err := os.ReadFile(name)
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if err != nil {
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t.Fatal(err)
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}
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buf.Write(body)
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}
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return sha256.Sum256(buf.Bytes())
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}
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