Update Testing Documentation (#88)

* update documentation for testing the operator

Signed-off-by: Jordan Dubrick <jdubrick@redhat.com>

* update pr template for testing changes

Signed-off-by: Jordan Dubrick <jdubrick@redhat.com>

* make reference to files consistent cases

Signed-off-by: Jordan Dubrick <jdubrick@redhat.com>

* add comment as reminder to update docs

Signed-off-by: Jordan Dubrick <jdubrick@redhat.com>

* link test instructions in pr template to contributing

Signed-off-by: Jordan Dubrick <jdubrick@redhat.com>

---------

Signed-off-by: Jordan Dubrick <jdubrick@redhat.com>

.github/PULL_REQUEST_TEMPLATE.md

@@ -16,4 +16,16 @@ Fixes #?
 Documentation
 - [ ] Does the registry operator documentation need to be updated with your changes?
 
-**How to test changes / Special notes to the reviewer**:
+<!--
+Instructions for locally testing changes made to the operator, drawn from CONTRIBUTING.md
+-->
+**Testing changes**
+
+[Running Unit Tests](https://github.com/devfile/registry-operator/blob/main/CONTRIBUTING.md#unit-tests)
+
+[Running Integration Tests](https://github.com/devfile/registry-operator/blob/main/CONTRIBUTING.md#integration-tests)
+
+<!--
+Add extra instructions that reviewers may need regarding testing your changes or to properly review your pull request.
+-->
+**Special notes to the reviewer**:

CONTRIBUTING.md

@@ -114,12 +114,21 @@ The unit tests for this repository are located under the `pkg/` folder and are d
 
 The integration tests for this repository are located under the `tests/integration` folder and contain tests that validate the Operator's functionality when running on an OpenShift cluster.
 
-To run these tests, run the following commands:
+One of the `oc` or `kubectl` executables must be accessible. If both are present in your path, `oc` will be used, except if you
+define the environment variable `K8S_CLI` with the command you prefer to use.
 
-```bash
-export IMG=<your-built-operator-image>
-make test-integration
-```
+By default, the tests will use the default image for the operator, `quay.io/devfile/registry-operator:next`.
+
+You can use `make <engine>-build` to build your own image, `make <engine>-push` to publish it - Replace `<engine>` with `podman` or `docker`. You will need to have a reference to your newly built image available via the `IMG` environment variable.
+
+<!--
+Will need to be updated after the completion of https://github.com/devfile/api/issues/1523
+-->
+In order for `make test-integration` to properly run you must first ensure your environment is prepared for the operator. The following steps should be done **before** running `make test-integration` and
+these commands should be run from the root of the repository where the [`Makefile`](Makefile) is located.
+1. Run `make install-cert` and wait for pods in the `cert-manager` namespace to be running before moving to step 2.
+2. Run `make install && make deploy` and wait until pods in the `registry-operator-system` namespace are running before proceeding to step 3.
+3. Run `make test-integration` or `IMG=<your-operator-image> make test-integration` to run the integration tests.
 
 ### Submitting Pull Request
 

README.md

@@ -131,18 +131,7 @@ To see all rules supported by the makefile, run `make help`
 
 ## Testing
 
-To run integration tests for the operator, run `make test-integration`. 
-
-One of the `oc` or `kubectl` executables must be accessible. If both are present in your path, `oc` will be used, except if you
-define the environment variable `K8S_CLI` with the command you prefer to use.
-
-By default, the tests will use the default image for the operator, `quay.io/devfile/registry-operator:next`.
-
-You can use `make <engine>-build` to build your own image, `make <engine>-push` to publish it - Replace `<engine>` with `podman` or `docker`. Then, to use your own image, run:
-
-```
-IMG=<your-operator-image> make test-integration
-```
+Detailed instructions on how to run tests for the Devfile Registry Operator are found in [CONTRIBUTING.md](CONTRIBUTING.md#testing-your-changes).
 
 ### Run operator locally
 It's possible to run an instance of the operator locally while communicating with a cluster. 
@@ -173,7 +162,7 @@ make run ENABLE_WEBHOOKS=false
 
 ## Contributing
 
-Please see our [contributing.md](./CONTRIBUTING.md).
+Please see our [CONTRIBUTING.md](./CONTRIBUTING.md).
 
 ## Known Issues
 - [`make test-integration` times out when running in Minikube](https://github.com/devfile/api/issues/1313)