v2 / vlib / v / tests / builtin_maps / map_init_with_update_test.v
52 lines · 49 sloc · 914 bytes · 6488041a749df9762348d019c4223908c476f2e2
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1const base_map = {


2    'a': 4


3    'b': 5


4}


5


6fn test_map_init_with_update() {


7    foo := {


8        ...base_map


9        'b': 88


10        'c': 99


11    }


12    assert base_map.keys() == ['a', 'b']


13    assert base_map['a'] == 4


14    assert base_map['b'] == 5


15    assert foo.keys() == ['a', 'b', 'c']


16    assert foo['a'] == 4


17    assert foo['b'] == 88


18    assert foo['c'] == 99


19


20    bar := {


21        ...foo


22        'b': 6


23        'd': 7


24    }


25    assert base_map.keys() == ['a', 'b']


26    assert base_map['a'] == 4


27    assert base_map['b'] == 5


28    assert foo.keys() == ['a', 'b', 'c']


29    assert foo['a'] == 4


30    assert foo['b'] == 88


31    assert foo['c'] == 99


32    assert bar.keys() == ['a', 'b', 'c', 'd']


33    assert bar['a'] == 4


34    assert bar['b'] == 6


35    assert bar['c'] == 99


36    assert bar['d'] == 7


37}


38


39fn test_map_init_with_only_update() {


40    mut foo := {


41        ...base_map


42    }


43    bar := {


44        ...foo


45    }


46    foo['a'] = 99


47    foo['c'] = 99


48    assert bar.keys() == ['a', 'b']


49    assert bar['a'] == 4


50    assert bar['b'] == 5


51    assert bar == base_map


52}


53