chore: use testcontainers-go in postgres store

postgres/postgres_test.go

@@ -8,14 +8,52 @@ import (
 
 	"github.com/jackc/pgx/v5"
 	"github.com/stretchr/testify/require"
+	"github.com/testcontainers/testcontainers-go"
+	"github.com/testcontainers/testcontainers-go/modules/postgres"
+	"github.com/testcontainers/testcontainers-go/wait"
 )
 
-var testStore = New(Config{
-	Database: os.Getenv("POSTGRES_DATABASE"),
-	Username: os.Getenv("POSTGRES_USERNAME"),
-	Password: os.Getenv("POSTGRES_PASSWORD"),
-	Reset:    true,
-})
+const (
+	// postgresImage is the default image used for running Postgres in tests.
+	postgresImage              = "docker.io/postgres:16-alpine"
+	postgresImageEnvVar string = "TEST_POSTGRES_IMAGE"
+	postgresUser        string = "username"
+	postgresPass        string = "p4ssw0rd"
+	postgresDatabase    string = "fiber"
+)
+
+func newTestStore(t testing.TB) (*Storage, error) {
+	t.Helper()
+
+	ctx := context.Background()
+
+	img := postgresImage
+	if imgFromEnv := os.Getenv(postgresImageEnvVar); imgFromEnv != "" {
+		img = imgFromEnv
+	}
+
+	c, err := postgres.Run(ctx, img,
+		postgres.WithUsername(postgresUser),
+		postgres.WithPassword(postgresPass),
+		postgres.WithDatabase(postgresDatabase),
+		testcontainers.WithWaitStrategy(
+			// First, we wait for the container to log readiness twice.
+			// This is because it will restart itself after the first startup.
+			wait.ForLog("database system is ready to accept connections").WithOccurrence(2),
+		),
+	)
+	require.NoError(t, err)
+
+	conn, err := c.ConnectionString(ctx, "sslmode=disable")
+	if err != nil {
+		return nil, err
+	}
+
+	return New(Config{
+		ConnectionURI: conn,
+		Reset:         true,
+	}), nil
+}
 
 func Test_Postgres_Set(t *testing.T) {
 	var (
@@ -23,7 +61,10 @@ func Test_Postgres_Set(t *testing.T) {
 		val = []byte("doe")
 	)
 
-	err := testStore.Set(key, val, 0)
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
+	err = testStore.Set(key, val, 0)
 	require.NoError(t, err)
 }
 
@@ -33,7 +74,10 @@ func Test_Postgres_Set_Override(t *testing.T) {
 		val = []byte("doe")
 	)
 
-	err := testStore.Set(key, val, 0)
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
+	err = testStore.Set(key, val, 0)
 	require.NoError(t, err)
 
 	err = testStore.Set(key, val, 0)
@@ -46,7 +90,10 @@ func Test_Postgres_Get(t *testing.T) {
 		val = []byte("doe")
 	)
 
-	err := testStore.Set(key, val, 0)
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
+	err = testStore.Set(key, val, 0)
 	require.NoError(t, err)
 
 	result, err := testStore.Get(key)
@@ -61,7 +108,10 @@ func Test_Postgres_Set_Expiration(t *testing.T) {
 		exp = 1 * time.Second
 	)
 
-	err := testStore.Set(key, val, exp)
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
+	err = testStore.Set(key, val, exp)
 	require.NoError(t, err)
 
 	time.Sleep(1100 * time.Millisecond)
@@ -70,12 +120,18 @@ func Test_Postgres_Set_Expiration(t *testing.T) {
 func Test_Postgres_Get_Expired(t *testing.T) {
 	key := "john"
 
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
 	result, err := testStore.Get(key)
 	require.NoError(t, err)
 	require.Zero(t, len(result))
 }
 
 func Test_Postgres_Get_NotExist(t *testing.T) {
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
 	result, err := testStore.Get("notexist")
 	require.NoError(t, err)
 	require.Zero(t, len(result))
@@ -87,7 +143,10 @@ func Test_Postgres_Delete(t *testing.T) {
 		val = []byte("doe")
 	)
 
-	err := testStore.Set(key, val, 0)
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
+	err = testStore.Set(key, val, 0)
 	require.NoError(t, err)
 
 	err = testStore.Delete(key)
@@ -101,7 +160,10 @@ func Test_Postgres_Delete(t *testing.T) {
 func Test_Postgres_Reset(t *testing.T) {
 	val := []byte("doe")
 
-	err := testStore.Set("john1", val, 0)
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
+	err = testStore.Set("john1", val, 0)
 	require.NoError(t, err)
 
 	err = testStore.Set("john2", val, 0)
@@ -122,8 +184,11 @@ func Test_Postgres_Reset(t *testing.T) {
 func Test_Postgres_GC(t *testing.T) {
 	testVal := []byte("doe")
 
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
 	// This key should expire
-	err := testStore.Set("john", testVal, time.Nanosecond)
+	err = testStore.Set("john", testVal, time.Nanosecond)
 	require.NoError(t, err)
 
 	testStore.gc(time.Now())
@@ -144,7 +209,10 @@ func Test_Postgres_GC(t *testing.T) {
 func Test_Postgres_Non_UTF8(t *testing.T) {
 	val := []byte("0xF5")
 
-	err := testStore.Set("0xF6", val, 0)
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
+	err = testStore.Set("0xF6", val, 0)
 	require.NoError(t, err)
 
 	result, err := testStore.Get("0xF6")
@@ -164,18 +232,26 @@ func Test_SslRequiredMode(t *testing.T) {
 }
 
 func Test_Postgres_Conn(t *testing.T) {
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
 	require.True(t, testStore.Conn() != nil)
 }
 
 func Test_Postgres_Close(t *testing.T) {
+	testStore, err := newTestStore(t)
+	require.NoError(t, err)
+
 	require.Nil(t, testStore.Close())
 }
 
 func Benchmark_Postgres_Set(b *testing.B) {
+	testStore, err := newTestStore(b)
+	require.NoError(b, err)
+
 	b.ReportAllocs()
 	b.ResetTimer()
 
-	var err error
 	for i := 0; i < b.N; i++ {
 		err = testStore.Set("john", []byte("doe"), 0)
 	}
@@ -184,7 +260,10 @@ func Benchmark_Postgres_Set(b *testing.B) {
 }
 
 func Benchmark_Postgres_Get(b *testing.B) {
-	err := testStore.Set("john", []byte("doe"), 0)
+	testStore, err := newTestStore(b)
+	require.NoError(b, err)
+
+	err = testStore.Set("john", []byte("doe"), 0)
 	require.NoError(b, err)
 
 	b.ReportAllocs()
@@ -198,10 +277,12 @@ func Benchmark_Postgres_Get(b *testing.B) {
 }
 
 func Benchmark_Postgres_SetAndDelete(b *testing.B) {
+	testStore, err := newTestStore(b)
+	require.NoError(b, err)
+
 	b.ReportAllocs()
 	b.ResetTimer()
 
-	var err error
 	for i := 0; i < b.N; i++ {
 		_ = testStore.Set("john", []byte("doe"), 0)
 		err = testStore.Delete("john")