Started the implementation of getMusicDirectory. Probably will need to introduce a new 'service' layer...

tests/mocks/mock_property_repo.go

@@ -0,0 +1,46 @@
+package mocks
+
+import (
+	"errors"
+	"github.com/deluan/gosonic/domain"
+)
+
+func CreateMockPropertyRepo() *MockProperty {
+	return &MockProperty{data: make(map[string]string)}
+}
+
+type MockProperty struct {
+	domain.PropertyRepository
+	data map[string]string
+	err  bool
+}
+
+func (m *MockProperty) SetError(err bool) {
+	m.err = err
+}
+
+func (m *MockProperty) Put(id string, value string) error {
+	if m.err {
+		return errors.New("Error!")
+	}
+	m.data[id] = value
+	return nil
+}
+
+func (m *MockProperty) Get(id string) (string, error) {
+	if m.err {
+		return "", errors.New("Error!")
+	} else {
+		return m.data[id], nil
+	}
+}
+
+func (m *MockProperty) DefaultGet(id string, defaultValue string) (string, error) {
+	v, err := m.Get(id)
+
+	if v == "" {
+		v = defaultValue
+	}
+
+	return v, err
+}