52 lines
961 B
Nix
52 lines
961 B
Nix
msg: {
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actual,
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expected ? {},
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asString ? false,
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asJSON ? false,
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removeDunders ? false,
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safeToPrint ? true,
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throws ? false,
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}: let
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preProcess = v:
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if removeDunders
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then undunder v
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else if asString
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then toString v
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else if asJSON
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then builtins.toJSON v
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else v;
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a = preProcess actual;
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e = preProcess expected;
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undunder = v:
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if builtins.isAttrs v
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then builtins.removeAttrs v ["__toString" "__functor"]
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else v;
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out =
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if safeToPrint
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then
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builtins.toJSON (undunder (
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if throws
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then (builtins.tryEval actual).value
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else {
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inherit actual expected;
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}
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))
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else ''{"msg": "cannot be stringified ):"}'';
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success =
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if throws
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then (builtins.tryEval actual).success == false
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else (a == e);
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in
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{
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inherit success msg;
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}
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// (
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if success
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then {}
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else builtins.trace "FAILED ${msg}" {inherit actual expected;}
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)
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