feat: add tests

internal/api/handler_test.go

@@ -0,0 +1,90 @@
+package api_test
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/babariviere/short/internal/api"
+	"github.com/babariviere/short/internal/db"
+	"github.com/babariviere/short/internal/oas"
+	"github.com/jackc/pgx/v5"
+)
+
+func withServer(f func(handler oas.Handler)) {
+	name := fmt.Sprintf("test%d", time.Now().Unix())
+
+	ctx := context.TODO()
+	root, err := pgx.Connect(ctx, os.Getenv("DATABASE_URL"))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if _, err = root.Exec(ctx, "CREATE DATABASE "+name+";"); err != nil {
+		log.Fatal("failed to create database", name)
+	}
+	defer func() {
+		root.Exec(ctx, "DROP DATABASE "+name+";")
+	}()
+
+	// TODO: substitute from DATABASE_URL instead
+	conn, err := pgx.Connect(ctx, "postgres://short:short@localhost:5432/"+name)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	schema, err := os.ReadFile("../../sql/schema.sql")
+	if err != nil {
+		log.Fatal(err)
+	}
+	conn.Exec(ctx, string(schema))
+
+	f(api.NewHandler("http://test", db.New(conn)))
+	conn.Close(ctx)
+}
+
+func TestCreateURL(t *testing.T) {
+	cases := []string{
+		"http://test.com",
+		"http://github.com",
+		"abcdef", // FIXME: should not pass but it works...
+	}
+	withServer(func(h oas.Handler) {
+		for _, url := range cases {
+			shortenRes, err := h.CreateShortURL(context.TODO(), &oas.CreateShortURLReq{
+				URL: url,
+			})
+			if err != nil {
+				t.Errorf("failed to create url %q: %v", url, err)
+				continue
+			}
+
+			shorten, ok := shortenRes.(*oas.CreateShortURLCreated)
+			if !ok {
+				t.Errorf("expected 201 status code, got 400 for url %q", url)
+				continue
+			}
+
+			res, err := h.RedirectLongURL(context.TODO(), oas.RedirectLongURLParams{
+				Hash: strings.TrimPrefix(shorten.Shorten, "http://test/"),
+			})
+			if err != nil {
+				t.Errorf("failed to get redirect url for %q: %v", url, err)
+				continue
+			}
+
+			redirect, ok := res.(*oas.RedirectLongURLTemporaryRedirect)
+			if !ok {
+				t.Errorf("expected 307 status code, got 404 for url %q with shorten %q", url, shorten.Shorten)
+			}
+
+			if redirect.Location.Value != url {
+				t.Errorf("supplied %q but got %q during redirect", url, redirect.Location.Value)
+			}
+		}
+	})
+}