Update testing/README.md with testing instructions(#229)

Author: mwang2016

testing/integration/README.md

@@ -1,4 +1,77 @@
-## PCL Integration Tests Environment Setup
+## PCF Nozzle Integration Tests Environment Setup
 
-## Using remote environment
+#### Setup PCF Nozzle
+ - Using remote nozzle environment
 
+    Deploy nozzle to PCF env via `cf push`
+    ```
+    cf login --skip-ssl-validation -a https://api.<your cf sys domain> -u <your cf user name> -p <your cf password>
+    
+    make deploy-nozzle
+    ```
+ - Run nozzle binary locally
+
+    Create a `env.sh` file to export all configuration env variables locally.
+    ``````
+    #!/usr/bin/env bash
+     
+    export SKIP_SSL_VALIDATION_CF=true
+    export SKIP_SSL_VALIDATION_SPLUNK=true
+    export ADD_APP_INFO=true
+    export API_ENDPOINT=<CF-ENDPOINT>
+    export EVENTS=ValueMetric,CounterEvent,Error,LogMessage,HttpStartStop,ContainerMetric
+    export SPLUNK_TOKEN=<HEC-TOKEN>
+    export SPLUNK_HOST=<HEC-ENDPOINT>
+    export SPLUNK_INDEX=<TARGET-SPLUNK-INDEX>
+    export FIREHOSE_SUBSCRIPTION_ID=splunk-nozzle
+    export FIREHOSE_KEEP_ALIVE=25s
+    export CLIENT_ID=<PCF CLIENT ID>
+    export CLIENT_SECRET=<PCF CLIENT SECRET>
+    ``````
+    Start nozzle binary
+    ```
+    cf login --skip-ssl-validation -a https://api.<your cf sys domain> -u <your cf user name> -p <your cf password>
+    
+    source env.sh
+    
+    ./splunk-firehose-nozzle
+    ```
+#### Install python 3
+
+    sudo apt-get install python3.7
+    sudo apt-get install python3-pip
+    
+#### Install python virtualenv
+
+    pip3 install virtualenv
+    virtualenv venv
+    source venv/bin/activate
+
+#### Install Dependencies
+
+    pip3 install -r requirements.txt
+
+#### Run Automation tests
+
+  - Run all the test cases
+      ```
+      pytest testing/integration/
+      ```
+
+  - Run all the critical test cases tagged with Critical
+      ```
+      pytest testing/integration -v -m Critical
+      ```
+    
+  - Run specific test case
+      ```
+      pytest testing/integration/test_method.py::test_func
+      ```
+      or
+      ```
+      pytest testing/integration/test_method.py::TestClass::test_func
+      ```
+      or (if test_func is unique)
+      ```
+      pytest -k test_func
+      ```

testing/integration/testcases/test_nozzle_configurations_local.py

@@ -32,7 +32,7 @@ def setup_class(self, test_env, splunk_logger, nozzle_logger, test_setup):
         ("index={0} test_tag::{1} event_type=HttpStartStop", True),
         ("index={0} test_tag::{1} event_type=ContainerMetric", True)
     ])
-    def test_search_event_on_splunk_is_not_empty(self, query_input, is_result_empty, test_env, splunk_logger, nozzle_logger):
+    def test_search_event_by_event_type(self, query_input, is_result_empty, test_env, splunk_logger, nozzle_logger):
         self.splunk_api = SplunkApi(test_env, splunk_logger)
         search_results = self.splunk_api.check_events_from_splunk(
             query=query_input.format(test_env['splunk_index'], _tag),