Update test for SiteSettingMapper

Author: itsmeichigo

Networking/NetworkingTests/Mapper/SiteSettingMapperTests.swift

@@ -17,6 +17,18 @@ final class SiteSettingMapperTests: XCTestCase {
         XCTAssertEqual(setting.label, "Enable coupons")
         XCTAssertEqual(setting.value, "yes")
     }
+
+    /// Verifies the SiteSetting fields are parsed correctly when response has no data envelope.
+    ///
+    func test_SiteSetting_fields_are_properly_parsed_when_response_has_no_data_envelope() throws {
+        let setting = try XCTUnwrap(mapLoadCouponSettingResponseWithoutDataEnvelope())
+        XCTAssertEqual(setting.siteID, dummySiteID)
+        XCTAssertEqual(setting.settingID, "woocommerce_enable_coupons")
+        XCTAssertEqual(setting.settingDescription, "Enable the use of coupon codes")
+        XCTAssertEqual(setting.label, "Enable coupons")
+        XCTAssertEqual(setting.value, "yes")
+    }
+
     func test_SiteSetting_value_field_is_properly_parsed_when_value_field_is_not_string() throws {
         let setting = try XCTUnwrap(loadMultiselectValueSettingResponse())
         XCTAssertEqual(setting.settingID, "woocommerce_all_except_countries")
@@ -41,6 +53,13 @@ private extension SiteSettingMapperTests {
     func mapLoadCouponSettingResponse() -> SiteSetting? {
         return mapSetting(from: "setting-coupon")
     }
+
+    /// Returns the SiteSettingMapper output upon receiving `setting-coupon-without-data`
+    ///
+    func mapLoadCouponSettingResponseWithoutDataEnvelope() -> SiteSetting? {
+        return mapSetting(from: "setting-coupon-without-data")
+    }
+
     /// Returns the SiteSettingMapper output upon receiving `setting-all-except-countries`
     ///
     func loadMultiselectValueSettingResponse() -> SiteSetting? {