public void AddConstantFunctionIfNotExistsTests()
{
string json = ReflectionUtilities.GetResourceAsString("UnitTests.Core.ApsimFile.JsonUtilitiesTestsDescendantsByType.json");
JObject rootNode = JObject.Parse(json);
List <JObject> axes = JsonUtilities.ChildrenRecursively(rootNode, "Models.Graph.Axis");
JsonUtilities.AddConstantFunctionIfNotExists(axes[0], "ConstantFunction", "1");
var constant = JsonUtilities.ChildWithName(axes[0], "ConstantFunction");
Assert.NotNull(constant);
Assert.AreEqual(constant["$type"].Value <string>(), "Models.Functions.Constant, Models");
Assert.AreEqual(constant["FixedValue"].Value <string>(), "1");
}
