Engine Handler HTTP Response Tests (#13)

* update handler signatures to use specific store interfaces

* allow skipping Docker-based integration tests for local unit runs

engine/handlers/store_interfaces.go

@@ -0,0 +1,37 @@
+package handlers
+
+import (
+	"context"
+	"time"
+
+	"github.com/gabehf/koito/internal/db"
+	"github.com/gabehf/koito/internal/models"
+	"github.com/google/uuid"
+)
+
+// Focused interfaces for handlers to depend on smaller contracts.
+type ArtistStore interface {
+	GetArtist(ctx context.Context, opts db.GetArtistOpts) (*models.Artist, error)
+}
+
+type AlbumStore interface {
+	GetAlbum(ctx context.Context, opts db.GetAlbumOpts) (*models.Album, error)
+}
+
+type TrackStore interface {
+	GetTrack(ctx context.Context, opts db.GetTrackOpts) (*models.Track, error)
+}
+
+type LoginStore interface {
+	GetUserByUsername(ctx context.Context, username string) (*models.User, error)
+	SaveSession(ctx context.Context, userId int32, expiresAt time.Time, persistent bool) (*models.Session, error)
+}
+
+type SessionStore interface {
+	DeleteSession(ctx context.Context, sessionId uuid.UUID) error
+	RefreshSession(ctx context.Context, sessionId uuid.UUID, expiresAt time.Time) error
+}
+
+type UserUpdater interface {
+	UpdateUser(ctx context.Context, opts db.UpdateUserOpts) error
+}