chore: add sign in tests

service/auth_test.go

@@ -0,0 +1,107 @@
+package service
+
+import (
+	"me-fit/db"
+	"me-fit/types"
+
+	"errors"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type DbAuthStub struct {
+	user *db.User
+	err  error
+}
+
+func (d DbAuthStub) GetUser(email string) (*db.User, error) {
+	return d.user, d.err
+}
+
+func TestSignIn(t *testing.T) {
+	t.Parallel()
+	t.Run("should return user if password is correct", func(t *testing.T) {
+		t.Parallel()
+		salt := []byte("salt")
+		stub := DbAuthStub{
+			user: db.NewUser(
+				uuid.New(),
+				"test@test.de",
+				true,
+				time.Date(2020, 1, 2, 0, 0, 0, 0, time.UTC),
+				false,
+				getHashPassword("password", salt),
+				salt,
+				time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC),
+			),
+			err: nil,
+		}
+		underTest := NewServiceAuthImpl(stub)
+
+		actualUser, err := underTest.SignIn("test@test.de", "password")
+		if err != nil {
+			t.Errorf("Expected nil, got %v", err)
+		}
+
+		expectedUser := User{
+			Id:            stub.user.Id,
+			Email:         stub.user.Email,
+			EmailVerified: stub.user.EmailVerified,
+		}
+		if *actualUser != expectedUser {
+			t.Errorf("Expected %v, got %v", expectedUser, actualUser)
+		}
+	})
+
+	t.Run("should return ErrInvalidCretentials if password is not correct", func(t *testing.T) {
+		t.Parallel()
+		salt := []byte("salt")
+		stub := DbAuthStub{
+			user: db.NewUser(
+				uuid.New(),
+				"test@test.de",
+				true,
+				time.Date(2020, 1, 2, 0, 0, 0, 0, time.UTC),
+				false,
+				getHashPassword("password", salt),
+				salt,
+				time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC),
+			),
+			err: nil,
+		}
+		underTest := NewServiceAuthImpl(stub)
+
+		_, err := underTest.SignIn("test@test.de", "wrong password")
+		if err != ErrInvaidCredentials {
+			t.Errorf("Expected %v, got %v", ErrInvaidCredentials, err)
+		}
+	})
+	t.Run("should return ErrInvalidCretentials if user has not been found", func(t *testing.T) {
+		t.Parallel()
+		stub := DbAuthStub{
+			user: nil,
+			err:  db.ErrUserNotFound,
+		}
+		underTest := NewServiceAuthImpl(stub)
+
+		_, err := underTest.SignIn("test", "test")
+		if err != ErrInvaidCredentials {
+			t.Errorf("Expected %v, got %v", ErrInvaidCredentials, err)
+		}
+	})
+	t.Run("should forward ErrInternal on any other error", func(t *testing.T) {
+		t.Parallel()
+		stub := DbAuthStub{
+			user: nil,
+			err:  errors.New("Some error"),
+		}
+		underTest := NewServiceAuthImpl(stub)
+
+		_, err := underTest.SignIn("test", "test")
+		if err != types.ErrInternal {
+			t.Errorf("Expected %v, got %v", types.ErrInternal, err)
+		}
+	})
+}