The highest tagged major version is v2.

testutil/

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Valid go.mod file

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The x/testutil directory is not a cosmos-sdk module perse, but a collection of test utilities to make testing the other x/modules.

Path	Synopsis
cli Package network implements and exposes a fully operational in-process Tendermint test network that consists of at least one or potentially many validators.	Package network implements and exposes a fully operational in-process Tendermint test network that consists of at least one or potentially many validators.
events
keeper
mock Package mock is a generated GoMock package.	Package mock is a generated GoMock package.
nullify Package nullify provides methods to init nil values structs for test assertion.	Package nullify provides methods to init nil values structs for test assertion.
sample
testapp