fix(server): do not modify boolean values by default

CHANGELOG.md

@@ -13,6 +13,9 @@ See updating [Changelog example here](https://keepachangelog.com/en/1.0.0/)
 ### Changed
 - `service.GetKubernetesNodeGroup` method to return `upcloud.KubernetesNodeGroupDetails` type which is extended version of the previous `upcloud.KubernetesNodeGroup`
 
+### Fixed
+- `request.ModifyServerRequest` does not set boolean properties `Metadata` and `RemoteAccessEnabled` to `"no"` by default.
+
 ## [6.3.2]
 
 ### Added

upcloud/request/server.go

@@ -320,14 +320,14 @@ type ModifyServerRequest struct {
 	Hostname             string              `json:"hostname,omitempty"`
 	Labels               *upcloud.LabelSlice `json:"labels,omitempty"`
 	MemoryAmount         int                 `json:"memory_amount,omitempty,string"`
-	Metadata             upcloud.Boolean     `json:"metadata"`
+	Metadata             upcloud.Boolean     `json:"metadata,omitempty"`
 	NICModel             string              `json:"nic_model,omitempty"`
 	Plan                 string              `json:"plan,omitempty"`
 	SimpleBackup         string              `json:"simple_backup,omitempty"`
 	TimeZone             string              `json:"timezone,omitempty"`
 	Title                string              `json:"title,omitempty"`
 	VideoModel           string              `json:"video_model,omitempty"`
-	RemoteAccessEnabled  upcloud.Boolean     `json:"remote_access_enabled"`
+	RemoteAccessEnabled  upcloud.Boolean     `json:"remote_access_enabled,omitempty"`
 	RemoteAccessType     string              `json:"remote_access_type,omitempty"`
 	RemoteAccessPassword string              `json:"remote_access_password,omitempty"`
 	Zone                 string              `json:"zone,omitempty"`

upcloud/request/server_test.go

@@ -331,8 +331,32 @@ func TestModifyServerRequest(t *testing.T) {
 		  "core_number": "8",
 		  "memory_amount": "16384",
 		  "plan" : "custom",
-		  "metadata": "yes",
-		  "remote_access_enabled": "no"
+		  "metadata": "yes"
+		}
+	  }
+	`
+	actualJSON, err := json.Marshal(&request)
+	assert.Nil(t, err)
+	assert.JSONEq(t, expectedJSON, string(actualJSON))
+	assert.Equal(t, "/server/foo", request.RequestURL())
+}
+
+func TestModifyServerRequest_BooleanDefaults(t *testing.T) {
+	request := ModifyServerRequest{
+		UUID:         "foo",
+		Title:        "Modified server",
+		CoreNumber:   8,
+		MemoryAmount: 16384,
+		Plan:         "custom",
+	}
+
+	expectedJSON := `
+	  {
+		"server" : {
+          "title": "Modified server",
+		  "core_number": "8",
+		  "memory_amount": "16384",
+		  "plan" : "custom"
 		}
 	  }
 	`