nixite/testing/it.nix

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msg:
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{ actual, expected, asString ? false, asJSON ? false, removeDunders ? false, }:
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let
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preProcess = v:
if removeDunders then
builtins.removeAttrs v [ "__toString" "__functor" ]
else if asString then
toString v
else if asJSON then
builtins.toJSON v
else
v;
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a = preProcess actual;
e = preProcess expected;
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in if (a == e) then ''
echo 'it ${msg}'
'' else
builtins.trace actual
builtins.trace expected
''
echo FAILED ${msg}
''