diff --git a/internal/entry/repository.go b/internal/entry/repository.go
index 60f8766..a1415fa 100644
--- a/internal/entry/repository.go
+++ b/internal/entry/repository.go
@@ -17,9 +17,129 @@ type (
 		Update(ctx context.Context, path string, update UpdateFunc) (*domain.Entry, error)
 		Delete(ctx context.Context, path string) (bool, error)
 	}
+
+	dummyRepository struct{}
+
+	stubRepository struct {
+		outputs []domain.Entry
+		output  *domain.Entry
+		err     error
+		ok      bool
+	}
+
+	spyRepository struct {
+		subRepository Repository
+		Calls         int
+		Creates       int
+		Deletes       int
+		Fetches       int
+		Gets          int
+		Updates       int
+	}
+
+	// NOTE(toby3d): fakeRepository is already provided by memory sub-package.
+	// NOTE(toby3d): mockRepository is complicated. Mocking too much is bad.
 )
 
 var (
 	ErrExist    error = errors.New("this entry already exist")
 	ErrNotExist error = errors.New("this entry is not exist")
 )
+
+// NewDummyMediaRepository creates an empty repository to satisfy contracts.
+// It is used in tests where repository working is not important.
+func NewDummyEntryRepository() Repository {
+	return &dummyRepository{}
+}
+
+func (dummyRepository) Create(_ context.Context, _ string, _ domain.Entry) error { return nil }
+func (dummyRepository) Delete(_ context.Context, _ string) (bool, error)         { return false, nil }
+func (dummyRepository) Get(_ context.Context, _ string) (*domain.Entry, error)   { return nil, nil }
+
+func (dummyRepository) Fetch(_ context.Context, _ string) ([]domain.Entry, int, error) {
+	return make([]domain.Entry, 0), 0, nil
+}
+
+func (dummyRepository) Update(_ context.Context, _ string, _ UpdateFunc) (*domain.Entry, error) {
+	return nil, nil
+}
+
+// NewStubEntryRepository creates a repository that always returns input as a
+// output. It is used in tests where some dependency on the repository is
+// required.
+func NewStubEntryRepository(outputs []domain.Entry, output *domain.Entry, err error, ok bool) Repository {
+	return &stubRepository{
+		outputs: outputs,
+		output:  output,
+		err:     err,
+		ok:      ok,
+	}
+}
+
+func (repo *stubRepository) Create(_ context.Context, _ string, _ domain.Entry) error {
+	return repo.err
+}
+
+func (repo *stubRepository) Delete(ctx context.Context, path string) (bool, error) {
+	return repo.ok, repo.err
+}
+
+func (repo *stubRepository) Fetch(ctx context.Context, path string) ([]domain.Entry, int, error) {
+	return repo.outputs, len(repo.outputs), repo.err
+}
+
+func (repo *stubRepository) Get(ctx context.Context, path string) (*domain.Entry, error) {
+	return repo.output, repo.err
+}
+
+func (repo *stubRepository) Update(ctx context.Context, path string, update UpdateFunc) (*domain.Entry, error) {
+	return repo.output, repo.err
+}
+
+// NewSpyEntryRepository creates a spy repository which count outside calls,
+// based on provided subRepo. If subRepo is nil, then DummyRepository will be
+// used.
+func NewSpyEntryRepository(subRepo Repository) *spyRepository {
+	if subRepo == nil {
+		subRepo = NewDummyEntryRepository()
+	}
+
+	return &spyRepository{
+		subRepository: subRepo,
+		Creates:       0,
+		Updates:       0,
+		Gets:          0,
+		Fetches:       0,
+		Deletes:       0,
+	}
+}
+
+func (repo *spyRepository) Create(ctx context.Context, path string, e domain.Entry) error {
+	repo.Creates++
+
+	return repo.subRepository.Create(ctx, path, e)
+}
+
+func (repo *spyRepository) Delete(ctx context.Context, path string) (bool, error) {
+	repo.Deletes++
+
+	return repo.subRepository.Delete(ctx, path)
+}
+
+func (repo *spyRepository) Fetch(ctx context.Context, path string) ([]domain.Entry, int, error) {
+	repo.Fetches++
+
+	return repo.subRepository.Fetch(ctx, path)
+}
+
+func (repo *spyRepository) Get(ctx context.Context, path string) (*domain.Entry, error) {
+	repo.Gets++
+
+	return repo.subRepository.Get(ctx, path)
+}
+
+func (repo *spyRepository) Update(ctx context.Context, path string, update UpdateFunc) (*domain.Entry, error) {
+	repo.Updates++
+
+	return repo.subRepository.Update(ctx, path, update)
+}
diff --git a/internal/entry/usecase.go b/internal/entry/usecase.go
index 3d759e9..10772ca 100644
--- a/internal/entry/usecase.go
+++ b/internal/entry/usecase.go
@@ -8,6 +8,12 @@ import (
 )
 
 type (
+	UpdateOptions struct {
+		Add     *domain.Entry
+		Replace *domain.Entry
+		Delete  *domain.Entry
+	}
+
 	UseCase interface {
 		// Create creates a new entry. Returns map or rel links, like Permalink
 		// or created post, shortcode and syndication.
@@ -16,7 +22,7 @@ type (
 		// Update updates exist entry properties on provided u.
 		//
 		// TODO(toby3d): return Location header if entry updates their URL.
-		Update(ctx context.Context, u *url.URL, e domain.Entry) (*domain.Entry, error)
+		Update(ctx context.Context, u *url.URL, options UpdateOptions) (*domain.Entry, error)
 
 		// Delete destroy entry on provided URL.
 		Delete(ctx context.Context, u *url.URL) (bool, error)
@@ -41,17 +47,17 @@ func NewDummyUseCase() *dummyUseCase {
 	return &dummyUseCase{}
 }
 
-func (dummyUseCase) Create(ctx context.Context, e domain.Entry) (map[string]*url.URL, error) {
+func (dummyUseCase) Create(_ context.Context, _ domain.Entry) (map[string]*url.URL, error) {
 	return nil, nil
 }
 
-func (dummyUseCase) Update(ctx context.Context, u *url.URL, e domain.Entry) (*domain.Entry, error) {
+func (dummyUseCase) Update(_ context.Context, _ *url.URL, _ UpdateOptions) (*domain.Entry, error) {
 	return nil, nil
 }
 
-func (dummyUseCase) Delete(ctx context.Context, u *url.URL) (bool, error)            { return false, nil }
-func (dummyUseCase) Undelete(ctx context.Context, u *url.URL) (*domain.Entry, error) { return nil, nil }
-func (dummyUseCase) Source(ctx context.Context, u *url.URL) (*domain.Entry, error)   { return nil, nil }
+func (dummyUseCase) Delete(_ context.Context, _ *url.URL) (bool, error)            { return false, nil }
+func (dummyUseCase) Undelete(_ context.Context, _ *url.URL) (*domain.Entry, error) { return nil, nil }
+func (dummyUseCase) Source(_ context.Context, _ *url.URL) (*domain.Entry, error)   { return nil, nil }
 
 func NewStubUseCase(err error, e *domain.Entry, ok bool) *stubUseCase {
 	return &stubUseCase{
@@ -61,22 +67,22 @@ func NewStubUseCase(err error, e *domain.Entry, ok bool) *stubUseCase {
 	}
 }
 
-func (ucase *stubUseCase) Create(ctx context.Context, e domain.Entry) (*domain.Entry, error) {
+func (ucase *stubUseCase) Create(_ context.Context, _ domain.Entry) (*domain.Entry, error) {
 	return ucase.entry, ucase.err
 }
 
-func (ucase *stubUseCase) Update(ctx context.Context, u *url.URL, e domain.Entry) (*domain.Entry, error) {
+func (ucase *stubUseCase) Update(_ context.Context, _ *url.URL, _ UpdateOptions) (*domain.Entry, error) {
 	return ucase.entry, ucase.err
 }
 
-func (ucase *stubUseCase) Delete(ctx context.Context, u *url.URL) (bool, error) {
+func (ucase *stubUseCase) Delete(_ context.Context, _ *url.URL) (bool, error) {
 	return ucase.ok, ucase.err
 }
 
-func (ucase *stubUseCase) Undelete(ctx context.Context, u *url.URL) (*domain.Entry, error) {
+func (ucase *stubUseCase) Undelete(_ context.Context, _ *url.URL) (*domain.Entry, error) {
 	return ucase.entry, ucase.err
 }
 
-func (ucase *stubUseCase) Source(ctx context.Context, u *url.URL) (*domain.Entry, error) {
+func (ucase *stubUseCase) Source(_ context.Context, _ *url.URL) (*domain.Entry, error) {
 	return ucase.entry, ucase.err
 }
diff --git a/internal/entry/usecase/entry_ucase.go b/internal/entry/usecase/entry_ucase.go
index 7f42df7..ec591e2 100644
--- a/internal/entry/usecase/entry_ucase.go
+++ b/internal/entry/usecase/entry_ucase.go
@@ -73,14 +73,18 @@ func (ucase *entryUseCase) Undelete(ctx context.Context, u *url.URL) (*domain.En
 }
 
 // Update implements entry.UseCase.
-func (ucase *entryUseCase) Update(ctx context.Context, u *url.URL, e domain.Entry) (*domain.Entry, error) {
+func (ucase *entryUseCase) Update(ctx context.Context, u *url.URL, opts entry.UpdateOptions) (*domain.Entry, error) {
 	result, err := ucase.entries.Update(ctx, u.RequestURI(), func(_ context.Context, e *domain.Entry) (
 		*domain.Entry, error,
 	) {
 		e.DeletedAt = time.Time{}
 		e.UpdatedAt = time.Now().UTC()
 
-		return nil, nil
+		// TODO(toby3d): add
+		// TODO(toby3d): update
+		// TODO(toby3d): delete
+
+		return e, nil
 	})
 	if err != nil {
 		return nil, fmt.Errorf("cannot update entry: %w", err)
diff --git a/internal/media/repository.go b/internal/media/repository.go
index 5f54fe5..5b15a90 100644
--- a/internal/media/repository.go
+++ b/internal/media/repository.go
@@ -107,26 +107,26 @@ func NewSpyMediaRepository(subRepo Repository) *spyRepository {
 	}
 }
 
-func (repo *spyRepository) Create(_ context.Context, _ string, _ domain.File) error {
+func (repo *spyRepository) Create(ctx context.Context, path string, f domain.File) error {
 	repo.Creates++
 
-	return repo.subRepository.Create(context.TODO(), "", domain.File{})
+	return repo.subRepository.Create(ctx, path, f)
 }
 
-func (repo *spyRepository) Get(_ context.Context, _ string) (*domain.File, error) {
+func (repo *spyRepository) Get(ctx context.Context, path string) (*domain.File, error) {
 	repo.Gets++
 
-	return repo.subRepository.Get(context.TODO(), "")
+	return repo.subRepository.Get(ctx, path)
 }
 
-func (repo *spyRepository) Update(_ context.Context, _ string, _ UpdateFunc) error {
+func (repo *spyRepository) Update(ctx context.Context, path string, update UpdateFunc) error {
 	repo.Updates++
 
-	return repo.subRepository.Update(context.TODO(), "", nil)
+	return repo.subRepository.Update(ctx, path, update)
 }
 
-func (repo *spyRepository) Delete(_ context.Context, _ string) error {
+func (repo *spyRepository) Delete(ctx context.Context, path string) error {
 	repo.Deletes++
 
-	return repo.subRepository.Delete(context.TODO(), "")
+	return repo.subRepository.Delete(ctx, path)
 }