Add testing page to mdbook

docs/src/SUMMARY.md

@@ -25,4 +25,5 @@
     - [VPC](./topics/vpc.md)
 - [Development](./developers/development.md)
     - [Releasing](./developers/releasing.md)
+    - [Testing](./developers/testing.md)
 - [Reference](./reference/reference.md)

docs/src/developers/development.md

@@ -259,10 +259,23 @@ For any issues, please refer to the [troubleshooting guide](../topics/troublesho
 
 To run E2E locally run:
 ```sh
+# Required env vars to run e2e tests
+export INSTALL_K3S_PROVIDER=true
+export INSTALL_RKE2_PROVIDER=true
+export LINODE_REGION=us-sea
+export LINODE_CONTROL_PLANE_MACHINE_TYPE=g6-standard-2
+export LINODE_MACHINE_TYPE=g6-standard-2
+
+# IMPORTANT: Set linode, k3s, and rke2 providers in this config file.
+# Find an example at e2e/gha-clusterctl-config.yaml
+export CLUSTERCTL_CONFIG=~/.cluster-api/clusterctl.yaml
+
 make e2etest
 ```
 
-This command creates a KIND cluster, and executes all the defined tests.
+This command creates a KIND cluster, and executes all the defined tests. 
+
+For more details on E2E tests, please refer to [E2E Testing](./testing.md)
 
 ```admonish warning
 Please ensure you have [increased maximum open files on your host](https://kind.sigs.k8s.io/docs/user/known-issues/#pod-errors-due-to-too-many-open-files)

docs/src/developers/testing.md

@@ -1,12 +1,23 @@
 # CAPL Testing
 
+<!-- TOC depthFrom:2 -->
+
+- [Unit Tests](#unit-tests)
+  - [Executing Tests](#executing-tests)
+  - [Creating Tests](#creating-tests)
+- [E2E Tests](#e2e-tests)
+  - [Running Tests](#running-tests)
+  - [Adding Tests](#adding-tests)
+
+<!-- /TOC -->
+
 ## Unit Tests
-### Running Tests
+### Executing Tests
 In order to run the unit tests run the following command
 ```bash
 make test
 ```
-### Adding tests
+### Creating Tests
 General unit tests of functions follow the same conventions for testing using Go's `testing` standard library, along with the [testify](https://github.com/stretchr/testify) toolkit for making assertions.
 
 Unit tests that require API clients use mock clients generated using [gomock](https://github.com/uber-go/mock). To simplify the usage of mock clients, this repo also uses an internal library defined in `mock/mocktest`.
@@ -178,7 +189,7 @@ For e2e tests CAPL uses the [Chainsaw project](https://kyverno.github.io/chainsa
 spin up a cluster with the CAPL controllers installed and then uses `chainsaw-test.yaml` files to drive e2e testing.
 
 All test live in the e2e folder with a directory structure of `e2e/${COMPONENT}/${TEST_NAME}`
-### Running tests
+### Running Tests
 In order to run e2e tests run the following commands: 
 ```bash
 # Required env vars to run e2e tests
@@ -220,7 +231,7 @@ There are other selectors you can use to invoke specfic tests. Please look at th
 
 *Note: For any flavor e2e tests, please set the required env variables*
 
-### Adding tests
+### Adding Tests
 1. Create a new directory under the controller you are testing with the naming scheme of `e2e/${COMPONENT}/${TEST_NAME}`
 2. Create a minimal `chainsaw-test.yaml` file in the new test dir
     ```yaml