testFunc := newBuiltinFunction("TestParamSpecValidate", func(f *Frame, args Args, kwargs KWArgs) (*Object, *BaseException) {

if len(args) < 1 {

return nil, f.RaiseType(TypeErrorType, "not enough args")

}

val, raised := ToNative(f, args[0])

if raised != nil {

return nil, raised

}

s, ok := val.Interface().(*ParamSpec)

if !ok {

return nil, f.RaiseType(TypeErrorType, "expected ParamSpec arg")

}

validated := make([]*Object, s.Count)

if raised := s.Validate(f, validated, args[1:], kwargs); raised != nil {

return nil, raised

}

return NewTuple(validated...).ToObject(), nil

})

cases := []invokeTestCase{

invokeTestCase{args: wrapArgs(NewParamSpec("f1", nil, false, false)), want: NewTuple().ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f2", []Param{{"a", nil}}, false, false), 123), want: newTestTuple(123).ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f2", []Param{{"a", nil}}, false, false)), kwargs: wrapKWArgs("a", "apple"), want: newTestTuple("apple").ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f2", []Param{{"a", nil}}, false, false)), kwargs: wrapKWArgs("b", "bear"), wantExc: mustCreateException(TypeErrorType, "f2() got an unexpected keyword argument 'b'")},

invokeTestCase{args: wrapArgs(NewParamSpec("f2", []Param{{"a", nil}}, false, false)), wantExc: mustCreateException(TypeErrorType, "f2() takes at least 1 arguments (0 given)")},

invokeTestCase{args: wrapArgs(NewParamSpec("f2", []Param{{"a", nil}}, false, false), 1, 2, 3), wantExc: mustCreateException(TypeErrorType, "f2() takes 1 arguments (3 given)")},

invokeTestCase{args: wrapArgs(NewParamSpec("f3", []Param{{"a", nil}, {"b", nil}}, false, false), 1, 2), want: newTestTuple(1, 2).ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f3", []Param{{"a", nil}, {"b", nil}}, false, false), 1), kwargs: wrapKWArgs("b", "bear"), want: newTestTuple(1, "bear").ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f3", []Param{{"a", nil}, {"b", nil}}, false, false)), kwargs: wrapKWArgs("b", "bear", "a", "apple"), want: newTestTuple("apple", "bear").ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f3", []Param{{"a", nil}, {"b", nil}}, false, false), 1), kwargs: wrapKWArgs("a", "alpha"), wantExc: mustCreateException(TypeErrorType, "f3() got multiple values for keyword argument 'a'")},

invokeTestCase{args: wrapArgs(NewParamSpec("f4", []Param{{"a", nil}, {"b", None}}, false, false), 123), want: newTestTuple(123, None).ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f4", []Param{{"a", nil}, {"b", None}}, false, false), 123, "bar"), want: newTestTuple(123, "bar").ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f4", []Param{{"a", nil}, {"b", None}}, false, false)), kwargs: wrapKWArgs("a", 123, "b", "bar"), want: newTestTuple(123, "bar").ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f5", []Param{{"a", nil}}, true, false), 1), want: newTestTuple(1, NewTuple()).ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f5", []Param{{"a", nil}}, true, false), 1, 2, 3), want: newTestTuple(1, newTestTuple(2, 3)).ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f6", []Param{{"a", nil}}, false, true), "bar"), want: newTestTuple("bar", NewDict()).ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f6", []Param{{"a", nil}}, false, true)), kwargs: wrapKWArgs("a", "apple", "b", "bear"), want: newTestTuple("apple", newTestDict("b", "bear")).ToObject()},

invokeTestCase{args: wrapArgs(NewParamSpec("f6", []Param{{"a", nil}}, false, true), "bar"), kwargs: wrapKWArgs("b", "baz", "c", "qux"), want: newTestTuple("bar", newTestDict("b", "baz", "c", "qux")).ToObject()},

}

for _, cas := range cases {

if err := runInvokeTestCase(testFunc.ToObject(), &cas); err != "" {

t.Error(err)

}

}