dockerfile_test.go

package stint_test

import (
	"os"
	"strings"
	"testing"
)

func TestProductionDockerfileDoesNotDownloadTestOnlyModuleGraph(t *testing.T) {
	sourceBytes, err := os.ReadFile("Dockerfile")
	if err != nil {
		t.Fatal(err)
	}
	source := string(sourceBytes)
	if strings.Contains(source, "go mod download") {
		t.Fatal("production Docker build should not run go mod download because it pulls test-only dependencies")
	}
	if !strings.Contains(source, "go build -o /out/stint ./cmd/server") {
		t.Fatal("production Docker build should still build the server binary")
	}
}

func TestDockerfileHealthchecksMatchRuntimeTargets(t *testing.T) {
	sourceBytes, err := os.ReadFile("Dockerfile")
	if err != nil {
		t.Fatal(err)
	}
	source := string(sourceBytes)
	if !strings.Contains(source, "HEALTHCHECK") || !strings.Contains(source, "/healthz") {
		t.Fatal("api image should publish an HTTP /healthz Dockerfile healthcheck")
	}
	collector := source[strings.Index(source, "FROM api AS collector"):]
	if !strings.Contains(collector, "HEALTHCHECK NONE") {
		t.Fatal("collector target should disable the inherited api HTTP healthcheck")
	}
}

func TestWebDockerfileHealthcheckUsesReachableNextBinding(t *testing.T) {
	sourceBytes, err := os.ReadFile("web/Dockerfile")
	if err != nil {
		t.Fatal(err)
	}
	source := string(sourceBytes)
	if !strings.Contains(source, "ENV HOSTNAME=0.0.0.0") {
		t.Fatal("web image should bind Next to all interfaces so its container healthcheck can reach 127.0.0.1")
	}
	if !strings.Contains(source, "http://127.0.0.1:3000/healthz") {
		t.Fatal("web image should healthcheck the lightweight /healthz route")
	}
}

func TestGitHubReleaseWorkflowPublishesStintBinaries(t *testing.T) {
	sourceBytes, err := os.ReadFile(".github/workflows/release.yml")
	if err != nil {
		t.Fatal(err)
	}
	source := string(sourceBytes)
	for _, want := range []string{
		"on:",
		"tags:",
		"v*",
		"cmd/stint",
		"goos: darwin",
		"goos: linux",
		"goarch: amd64",
		"goarch: arm64",
		"stint_${VERSION}_${GOOS}_${GOARCH}.tar.gz",
		"softprops/action-gh-release",
	} {
		if !strings.Contains(source, want) {
			t.Fatalf("release workflow missing %q", want)
		}
	}
	if strings.Contains(source, "go test ./...") {
		t.Fatal("release workflow should not run the full testcontainers test suite just to package binaries")
	}
}