bvandeusen
b8c758c7c9
Defines the abstraction every cover-art source will implement: - Provider — base interface (ID, DisplayName, RequiresAPIKey, DefaultEnabled, Configure). - AlbumCoverProvider — opt-in capability for fetching album covers by MBID. - ArtistArtProvider — opt-in capability for fetching artist thumb + fanart atomically by MBID. - TestableProvider — opt-in capability for the admin Test-Connection button. Sentinel ErrNotTestable / ErrProviderNotFound. ErrNotFound and ErrTransient stay in fetcher.go for now; they move into provider.go in the next commit when fetcher.go is deleted as part of the MBCAA refactor. Compile-time registry: providers register from init() in their own file. Duplicate IDs panic at startup (compiled-in registration is a build-time bug, not a runtime concern). Tests cover: Register adds, duplicate panics, ProviderByID success + ErrProviderNotFound, capability-interface filtering via Go type assertion.
117 lines
3.0 KiB
Go
117 lines
3.0 KiB
Go
package coverart
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import (
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"context"
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"errors"
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"testing"
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)
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// fakeProvider is a minimal Provider for registry tests. Does not
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// implement any capability interface.
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type fakeProvider struct {
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id string
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display string
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requiresKey bool
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defaultOn bool
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}
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func (f *fakeProvider) ID() string { return f.id }
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func (f *fakeProvider) DisplayName() string { return f.display }
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func (f *fakeProvider) RequiresAPIKey() bool { return f.requiresKey }
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func (f *fakeProvider) DefaultEnabled() bool { return f.defaultOn }
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func (f *fakeProvider) Configure(s ProviderSettings) error { return nil }
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// fakeAlbumProvider opts into the AlbumCoverProvider capability for
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// the capability-filter test.
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type fakeAlbumProvider struct {
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fakeProvider
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}
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func (f *fakeAlbumProvider) FetchAlbumCover(ctx context.Context, mbid string) ([]byte, error) {
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return []byte("img"), nil
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}
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func TestRegister_AddsProvider(t *testing.T) {
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resetRegistryForTests()
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defer resetRegistryForTests()
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p := &fakeProvider{id: "fake1", display: "Fake One"}
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Register(p)
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all := AllProviders()
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if len(all) != 1 {
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t.Fatalf("AllProviders len = %d, want 1", len(all))
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}
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if all[0].ID() != "fake1" {
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t.Errorf("ID = %q, want %q", all[0].ID(), "fake1")
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}
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}
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func TestRegister_PanicsOnDuplicateID(t *testing.T) {
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resetRegistryForTests()
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defer resetRegistryForTests()
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Register(&fakeProvider{id: "dup"})
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defer func() {
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if r := recover(); r == nil {
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t.Fatal("expected panic on duplicate ID")
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}
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}()
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Register(&fakeProvider{id: "dup"}) // should panic
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}
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func TestProviderByID_Found(t *testing.T) {
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resetRegistryForTests()
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defer resetRegistryForTests()
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Register(&fakeProvider{id: "x", display: "X"})
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p, err := ProviderByID("x")
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if err != nil {
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t.Fatalf("err = %v, want nil", err)
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}
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if p.DisplayName() != "X" {
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t.Errorf("display = %q, want %q", p.DisplayName(), "X")
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}
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}
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func TestProviderByID_NotFound(t *testing.T) {
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resetRegistryForTests()
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defer resetRegistryForTests()
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_, err := ProviderByID("missing")
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if !errors.Is(err, ErrProviderNotFound) {
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t.Errorf("err = %v, want ErrProviderNotFound", err)
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}
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}
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func TestCapabilityFiltering(t *testing.T) {
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resetRegistryForTests()
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defer resetRegistryForTests()
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plain := &fakeProvider{id: "plain"}
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withAlbum := &fakeAlbumProvider{fakeProvider: fakeProvider{id: "alb"}}
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Register(plain)
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Register(withAlbum)
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if got := len(AllProviders()); got != 2 {
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t.Fatalf("AllProviders len = %d, want 2", got)
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}
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// Type-assert to count AlbumCoverProvider implementers — mimics
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// what SettingsService.EnabledAlbumProviders does internally.
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var albumProviders []AlbumCoverProvider
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for _, p := range AllProviders() {
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if ap, ok := p.(AlbumCoverProvider); ok {
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albumProviders = append(albumProviders, ap)
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}
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}
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if len(albumProviders) != 1 {
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t.Fatalf("AlbumCoverProvider count = %d, want 1", len(albumProviders))
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}
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if albumProviders[0].ID() != "alb" {
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t.Errorf("AlbumCoverProvider[0].ID = %q, want %q", albumProviders[0].ID(), "alb")
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}
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}
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