How to run the tests locally

[jholkeboer]

When I ran pytest on the latest master branch, I got 88 failed, 21 passed, 3 warnings . There are many MissingCredentials errors like this:

________________________ test_sales_granularity_day_by_asin ________________________

    def test_sales_granularity_day_by_asin():
>       res = Sales().get_order_metrics(interval, Granularity.DAY, granularityTimeZone='US/Central', asin='B008OLKVEW')

api/sales/test_sales.py:30: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../sp_api/base/client.py:39: in __init__
    self.credentials = CredentialProvider(account, credentials).credentials
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <sp_api.base.credential_provider.CredentialProvider object at 0x7f698ab54be0>
account = 'default', credentials = None

    def __init__(self, account='default', credentials=None):
        self.account = account
        for cp in self.CREDENTIAL_PROVIDERS:
            try:
                self.credentials = cp(account=account, credentials=credentials)()
                break
            except MissingCredentials:
                continue
        if self.credentials:
            self.credentials = self.Config(**self.credentials)
        else:
>           raise MissingCredentials(f'Credentials are missing: {", ".join(required_credentials)}')
E           sp_api.base.credential_provider.MissingCredentials: Credentials are missing: aws_access_key, aws_secret_key, lwa_app_id, lwa_client_secret

../sp_api/base/credential_provider.py:133: MissingCredentials

Are there any files or environment variables it's expecting to make them pass? I already have LWA_APP_ID and LWA_CLIENT_SECRET set in the environment