test: 更新单元测试

Author: ArgoZhang

test/UnitTest/Utils/UtilityTest.cs

@@ -380,7 +380,7 @@ public void GetJsonStringByTypeName_Ok()
     }
 
     [Fact]
-    public void GetJsonStringByTypeName_Exception()
+    public void GetJsonStringByTypeName_UseKeyWhenValueIsNull()
     {
         // improve code coverage
         var option = Context.Services.GetRequiredService<IOptions<JsonLocalizationOptions>>().Value;
@@ -394,6 +394,17 @@ public void GetJsonStringByTypeName_Exception()
         var test2 = items.FirstOrDefault(i => i.Name == "Test-Key");
         Assert.NotNull(test2);
         Assert.Equal("Test-Key", test2.Value);
+
+        option.UseKeyWhenValueIsNull = false;
+        items = Utility.GetJsonStringByTypeName(option, this.GetType().Assembly, "UnitTest.Utils.UtilityTest", "en-US", true);
+
+        test1 = items.FirstOrDefault(i => i.Name == "Test-Null");
+        Assert.NotNull(test1);
+        Assert.Equal("", test1.Value);
+
+        test2 = items.FirstOrDefault(i => i.Name == "Test-Key");
+        Assert.NotNull(test2);
+        Assert.Equal("", test2.Value);
     }
 
     private class MockDynamicObject : IDynamicObject