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package auth
import (
"context"
"errors"
"testing"
"github.com/jackc/pgx/v5"
"golang.org/x/crypto/bcrypt"
"albatross-2026-backend/db"
)
type mockQuerier struct {
db.Querier
getUserAuthByUsernameFunc func(ctx context.Context, username string) (db.GetUserAuthByUsernameRow, error)
}
func (m *mockQuerier) GetUserAuthByUsername(ctx context.Context, username string) (db.GetUserAuthByUsernameRow, error) {
if m.getUserAuthByUsernameFunc != nil {
return m.getUserAuthByUsernameFunc(ctx, username)
}
return db.GetUserAuthByUsernameRow{}, pgx.ErrNoRows
}
type mockTxManager struct{}
func (m *mockTxManager) RunInTx(_ context.Context, fn func(q db.Querier) error) error {
return fn(&mockQuerier{})
}
func TestLogin_PasswordAuth_Success(t *testing.T) {
hash, err := bcrypt.GenerateFromPassword([]byte("correct-password"), bcrypt.MinCost)
if err != nil {
t.Fatalf("failed to generate hash: %v", err)
}
hashStr := string(hash)
a := NewAuthenticator(
&mockQuerier{
getUserAuthByUsernameFunc: func(_ context.Context, _ string) (db.GetUserAuthByUsernameRow, error) {
return db.GetUserAuthByUsernameRow{
UserID: 42,
AuthType: "password",
PasswordHash: &hashStr,
}, nil
},
},
&mockTxManager{},
)
userID, err := a.Login(context.Background(), "testuser", "correct-password")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if userID != 42 {
t.Errorf("expected userID 42, got %d", userID)
}
}
func TestLogin_PasswordAuth_WrongPassword(t *testing.T) {
hash, err := bcrypt.GenerateFromPassword([]byte("correct-password"), bcrypt.MinCost)
if err != nil {
t.Fatalf("failed to generate hash: %v", err)
}
hashStr := string(hash)
a := NewAuthenticator(
&mockQuerier{
getUserAuthByUsernameFunc: func(_ context.Context, _ string) (db.GetUserAuthByUsernameRow, error) {
return db.GetUserAuthByUsernameRow{
UserID: 42,
AuthType: "password",
PasswordHash: &hashStr,
}, nil
},
},
&mockTxManager{},
)
_, err = a.Login(context.Background(), "testuser", "wrong-password")
if err == nil {
t.Fatal("expected error for wrong password, got nil")
}
}
func TestLogin_PasswordAuth_NilHash(t *testing.T) {
a := NewAuthenticator(
&mockQuerier{
getUserAuthByUsernameFunc: func(_ context.Context, _ string) (db.GetUserAuthByUsernameRow, error) {
return db.GetUserAuthByUsernameRow{
UserID: 42,
AuthType: "password",
PasswordHash: nil,
}, nil
},
},
&mockTxManager{},
)
_, err := a.Login(context.Background(), "testuser", "any")
if err == nil {
t.Fatal("expected error for nil password hash, got nil")
}
if err.Error() != "inconsistent data: password auth type but no password hash" {
t.Errorf("unexpected error message: %s", err.Error())
}
}
func TestLogin_DBError(t *testing.T) {
dbErr := errors.New("database connection failed")
a := NewAuthenticator(
&mockQuerier{
getUserAuthByUsernameFunc: func(_ context.Context, _ string) (db.GetUserAuthByUsernameRow, error) {
return db.GetUserAuthByUsernameRow{}, dbErr
},
},
&mockTxManager{},
)
_, err := a.Login(context.Background(), "testuser", "any")
if !errors.Is(err, dbErr) {
t.Errorf("expected db error, got: %v", err)
}
}
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