Merge pull request #94 from Random-Liu/add-test-doc

Add cri-containerd test document for developer.

docs/testing.md

@@ -0,0 +1,66 @@
+CRI-Containerd Testing Guide
+============================
+This document assumes you have already setup the development environment (go, git, `cri-containerd` repo etc.).
+
+Before sending pull requests you should at least make sure your changes have passed code verification, unit and CRI validation tests.
+## Code Verification
+Code verification includes lint, code formatting, boilerplate check etc.
+
+* Install tools used by code verification:
+```shell
+make install.tools
+```
+* Run code verification:
+```shell
+make verify
+```
+## Unit Test
+Run all unit tests in `cri-containerd` repo.
+```
+make test
+```
+## CRI Validation Test
+[CRI validation test](https://github.com/kubernetes/community/blob/master/contributors/devel/cri-validation.md) is a test framework for validating that a Container Runtime Interface (CRI) implementation such as `cri-containerd` meets all the requirements necessary to manage pod sandboxes, containers, images etc.
+
+CRI validation test makes it possible to verify CRI conformance of `cri-containerd` without setting up Kubernetes components or running Kubernetes end-to-end tests.
+* [Install dependencies](../README.md#install-dependencies).
+* Build `cri-containerd`:
+```shell
+make
+```
+* Run CRI validation test:
+```shell
+make test-cri
+```
+* Focus or skip specific CRI validation test:
+```shell
+make test-cri FOCUS=REGEXP_TO_FOCUS SKIP=REGEXP_TO_SKIP
+```
+[More information](https://github.com/kubernetes-incubator/cri-tools) about CRI validation test.
+## Node E2E Test
+[Node e2e test](https://github.com/kubernetes/community/blob/master/contributors/devel/e2e-node-tests.md) is a test framework testing Kubernetes node level functionalities such as managing pods, mounting volumes etc. It starts a local cluster with Kubelet and a few other minimum dependencies, and runs node functionality tests against the local cluster.
+
+* Setup Kubernetes development environment following [Kubernetes Development Guide](https://github.com/kubernetes/community/blob/master/contributors/devel/development.md).
+* [Install dependencies](../README.md#install-dependencies).
+* Build and install `cri-containerd`:
+```shell
+make
+sudo make install
+```
+* Start `containerd` in 1st terminal:
+```shell
+sudo containerd
+``` 
+* Start `cri-containerd` in 2nd terminal:
+```shell
+sudo cri-containerd -v 2 --alsologtostderr  
+```
+* Run node e2e test **from Kubernetes project directory** in 3rd terminal:
+```shell
+make test-e2e-node RUNTIME=remote CONTAINER_RUNTIME_ENDPOINT=/var/run/cri-containerd.sock 
+```
+*Note that `cri-containerd` is still in alpha, it can only pass part of node e2e tests now.*
+<!-- TODO: Get rid of this after all node e2e tests pass. -->
+
+[More information](https://github.com/kubernetes/community/blob/master/contributors/devel/e2e-node-tests.md) about Kubernetes node e2e test.
+<!-- TODO: Add cluster e2e test -->