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Trying to create a mock environment for testing a pallet, but getting an error msg failed to resolve: could not find tt_error_token in the crate root whenever trying to add my pallet in the mock environment.

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  • are you importing the pallet and implementing its Configs before adding it to construct_runtime?
    – Discardo
    Feb 8, 2023 at 7:24

1 Answer 1

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I'd suggest to take this pallet as a template for yours. Is a pallet template from the Substrate Developer Hub repo.

In this you can see how to mock the environment:

frame_support::construct_runtime!(
 pub enum Test where
    Block = Block,
    NodeBlock = Block,
    UncheckedExtrinsic = UncheckedExtrinsic,
 {
    System: frame_system,
    TemplateModule: pallet_template,
 }
);

Adding the pallet_template:

impl pallet_template::Config for Test {
  type RuntimeEvent = RuntimeEvent;
}

And how to create the unit tests.

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