crosvm/integration_tests/README.md

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# Crosvm Integration Tests
These tests run a crosvm VM on the host to verify end to end behavior. They use
a prebuilt guest kernel and rootfs, which is downloaded from google cloud
storage.
## Running with locally built kernel/rootfs
If the test needs to run offline, or you want to make changes to the kernel or
rootfs, you have to specify the environment variables
`CROSVM_CARGO_TEST_KERNEL_BINARY` and `CROSVM_CARGO_TEST_ROOTFS_IMAGE` to point
to the right files.
The use_local_build.sh script does this for you:
```$ source guest_under_test/use_local_build.sh```
## Uploading prebuilts
Note: Only Googlers with access to the crosvm-testing cloud storage bin can
upload prebuilts.
To upload the modified rootfs, you will have to uprev the `PREBUILT_VERSION`
variable in:
- `./guest_under_test/PREBUILT_VERSION`
- `src/third_party/chromiumos-overlay/chromeos-base/crosvm/crosvm-9999.ebuild`
Then run the upload script to build and upload the new prebuilts. **Never** try
to modify an existing prebuilt as the new images may break tests in older
versions.