test(wopi): add tests for wopi client

pkg/mocks/cachemock/mock.go

@@ -0,0 +1,29 @@
+package cachemock
+
+import "github.com/stretchr/testify/mock"
+
+type CacheClientMock struct {
+	mock.Mock
+}
+
+func (c CacheClientMock) Set(key string, value interface{}, ttl int) error {
+	return c.Called(key, value, ttl).Error(0)
+}
+
+func (c CacheClientMock) Get(key string) (interface{}, bool) {
+	args := c.Called(key)
+	return args.Get(0), args.Bool(1)
+}
+
+func (c CacheClientMock) Gets(keys []string, prefix string) (map[string]interface{}, []string) {
+	args := c.Called(keys, prefix)
+	return args.Get(0).(map[string]interface{}), args.Get(1).([]string)
+}
+
+func (c CacheClientMock) Sets(values map[string]interface{}, prefix string) error {
+	return c.Called(values).Error(0)
+}
+
+func (c CacheClientMock) Delete(keys []string, prefix string) error {
+	return c.Called(keys, prefix).Error(0)
+}