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Grails’ JSONObject.NULL More or Less Equal To Null

By 22 mei 2015januari 30th, 2017No Comments

Since Groovy 1.8 we can check if a Map is equal to another Map if the keys and values are the same. Very convenient in tests for example.

def someMap = [age: 34, name: "Ted"]
assert someMap == [name: "Ted", age: 34]

Today I kept staring at a failure, while testing some x and y graph data points returned by a Grails controller, where two Maps were somehow not equal according to Spock, while even the assertion’s output looked ‘equal’.



and: "series are present"
def series = response.json
series.size() == 2

and: "realized series is correct"
and: "predicted series is correct"
def predictedSeries = series[1]
predictedSeries.values.size() == 2
predictedSeries.values[0] == [y:null, x:'Mar']
predictedSeries.values[1] == [y:121, x:'Apr']

resulted in:

Condition not satisfied:
predictedSeries.values[0] == [y:null, x:'Mar']
| | | |
| | | false
| | [y:null, x:Mar]
| [[y:null, x:Mar], [y:121, x:Apr]]
[values:[[y:null, x:Mar], [y:121, x:Apr]]]

Why isn’t [y:null, x:Mar] equal to [y:null, x:Mar]?

Read more over here.