Feature 02 integration fix: repository coverage and boot-path tests (#15)

Co-authored-by: dev_agent <dev_agent@cubecraftlabs.com>
Co-committed-by: dev_agent <dev_agent@cubecraftlabs.com>

cmd/server/boot_test.go

@@ -0,0 +1,96 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"io/fs"
+	"log/slog"
+	"net/url"
+	"strings"
+	"testing"
+	"testing/fstest"
+	"time"
+
+	"code.cubecraftlabs.com/Maniacs_Mansion/Meal-Quest/internal/config"
+	"code.cubecraftlabs.com/Maniacs_Mansion/Meal-Quest/migrations"
+)
+
+// useBootMigrations swaps bootMigrations for the test and restores it after.
+// Tests that call it must not run in parallel.
+func useBootMigrations(t *testing.T, m fstest.MapFS) {
+	t.Helper()
+	saved := bootMigrations
+	bootMigrations = m
+	t.Cleanup(func() { bootMigrations = saved })
+}
+
+var brokenMigrations = fstest.MapFS{
+	"0000_good.sql":   {Data: []byte("CREATE TABLE good (id INTEGER PRIMARY KEY);")},
+	"0001_broken.sql": {Data: []byte("CREATE TABLE broken (id INTEGER PRIMARY KEY;")},
+}
+
+func TestOpenStoreMigrationFailureStopsBoot(t *testing.T) {
+	useBootMigrations(t, brokenMigrations)
+
+	db, err := openStore(context.Background(), t.TempDir())
+	if err == nil {
+		db.Close()
+		t.Fatal("openStore succeeded with a broken migration")
+	}
+	if db != nil {
+		t.Error("openStore returned a store alongside the error")
+	}
+	if !strings.Contains(err.Error(), "0001_broken.sql") {
+		t.Errorf("error does not name the broken migration: %v", err)
+	}
+}
+
+func TestOpenStoreAppliesEmbeddedMigrations(t *testing.T) {
+	ctx := context.Background()
+	db, err := openStore(ctx, t.TempDir())
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() {
+		if err := db.Close(); err != nil {
+			t.Error(err)
+		}
+	})
+	var n int
+	if err := db.Reader.QueryRowContext(ctx, "SELECT count(*) FROM schema_migrations").Scan(&n); err != nil {
+		t.Fatal(err)
+	}
+	files, err := fs.Glob(migrations.FS, "*.sql")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if n != len(files) {
+		t.Errorf("schema_migrations has %d rows, want %d", n, len(files))
+	}
+}
+
+func TestRunMigrationFailureReturnsBeforeListening(t *testing.T) {
+	useBootMigrations(t, brokenMigrations)
+
+	var logs bytes.Buffer
+	cfg := config.Config{
+		HTTPAddr:        "127.0.0.1:0",
+		PublicURL:       &url.URL{Scheme: "http", Host: "localhost"},
+		DataDir:         t.TempDir(),
+		ShutdownTimeout: time.Second,
+	}
+	errc := make(chan error, 1)
+	go func() { errc <- run(cfg, slog.New(slog.NewJSONHandler(&logs, nil))) }()
+
+	select {
+	case err := <-errc:
+		if err == nil || !strings.Contains(err.Error(), "0001_broken.sql") {
+			t.Fatalf("run error = %v, want the broken migration's error", err)
+		}
+	case <-time.After(10 * time.Second):
+		t.Fatal("run kept going after a migration failure")
+	}
+	if strings.Contains(logs.String(), `"listening"`) {
+		t.Errorf("run started listening despite the migration failure: %s", logs.String())
+	}
+}