Make hostname optional

README.md

@@ -1,37 +1,48 @@
 # performance-testing
 The code from my YouTube video on "How to do Performance Testing with k6"
 
-You first need to run the API:
+You first need to run the API which you can do in 2 ways.
+
+Using dotnet:
 ```sh
 cd src
 dotnet run
 ```
 
+Using Docker:
+```sh
+docker-compose up
+```
+
 Then in a seperate terminal window run the tests using the commands below.
 
-I have added a HOSTNAME variable to each of the scripts which needs to be added when running them.
+Note if you want to run these scripts against an API hosted on another machine you can use the HOSTNAME environment variable. e.g.
+
+```sh
+k6 run -e HOSTNAME=192.168.1.1:5157 tests/simple-test.js
+```
 
 ## Simple Test
 ```sh
-k6 run -e HOSTNAME=localhost:5157 tests/simple-test.js
+k6 run tests/simple-test.js
 ```
 
 ## Stress Test
 ```sh
-k6 run -e HOSTNAME=localhost:5157 tests/stress-test.js
+k6 run tests/stress-test.js
-```
-
-## Spike Test
-```sh
-k6 run -e HOSTNAME=localhost:5157 tests/spike-test.js
 ```
 
 ## Load Test
 ```sh
-k6 run -e HOSTNAME=localhost:5157 tests/load-test.js
+k6 run tests/load-test.js
+```
+
+## Spike Test
+```sh
+k6 run tests/spike-test.js
 ```
 
 ## Soak Test
 ```sh
-k6 run -e HOSTNAME=localhost:5157 tests/soak-test.js
+k6 run tests/soak-test.js
 ```

tests/load-test.js

@@ -2,6 +2,8 @@ import http from 'k6/http';
 import { sleep } from 'k6';
 import { SharedArray } from 'k6/data';
 
+if (hostname == null) hostname = 'localhost:5157';
+
 export const options = {
     stages: [
         { duration: '5m', target: 200 }, // ramp up
@@ -30,6 +32,6 @@ const dates = new SharedArray('dates', function () {
 
 export default () => {
     const randomDate = dates[Math.floor(Math.random() * dates.length)];
-    http.get(`http://${__ENV.HOSTNAME}/age/${randomDate}`);
+    http.get(`http://${hostname}/age/${randomDate}`);
     sleep(1);
 };

tests/simple-test.js

@@ -1,10 +1,14 @@
 import http from 'k6/http';
 
+var hostname = __ENV.HOSTNAME;
+
+if (hostname == null) hostname = 'localhost:5157';
+
 export const options = {
     vus: 1,
     duration: '10s'
 };
 
 export default () => {
-    http.get(`http://${__ENV.HOSTNAME}/age/1987-09-01`);
+    http.get(`http://${hostname}/age/1987-09-01`);
 };

tests/soak-test.js

@@ -2,6 +2,8 @@ import http from 'k6/http';
 import { sleep } from 'k6';
 import { SharedArray } from 'k6/data';
 
+if (hostname == null) hostname = 'localhost:5157';
+
 export const options = {
     stages: [
         { duration: '5m', target: 200 }, // ramp up
@@ -27,6 +29,6 @@ const dates = new SharedArray('dates', function () {
 
 export default () => {
     const randomDate = dates[Math.floor(Math.random() * dates.length)];
-    http.get(`http://${__ENV.HOSTNAME}/age/${randomDate}`);
+    http.get(`http://${hostname}/age/${randomDate}`);
     sleep(1);
 };

tests/spike-test.js

@@ -2,6 +2,8 @@ import http from 'k6/http';
 import { sleep } from 'k6';
 import { SharedArray } from 'k6/data';
 
+if (hostname == null) hostname = 'localhost:5157';
+
 export const options = {
     stages: [
         { duration: '10s', target: 200 }, // ramp up
@@ -31,6 +33,6 @@ const dates = new SharedArray('dates', function () {
 
 export default () => {
     const randomDate = dates[Math.floor(Math.random() * dates.length)];
-    http.get(`http://${__ENV.HOSTNAME}/age/${randomDate}`);
+    http.get(`http://${hostname}/age/${randomDate}`);
     sleep(1);
 };

tests/stress-test.js

@@ -2,6 +2,8 @@ import http from 'k6/http';
 import { sleep } from 'k6';
 import { SharedArray } from 'k6/data';
 
+if (hostname == null) hostname = 'localhost:5157';
+
 export const options = {
     stages: [
         { duration: '1m', target: 200 }, // ramp up
@@ -31,6 +33,6 @@ const dates = new SharedArray('dates', function () {
 
 export default () => {
     const randomDate = dates[Math.floor(Math.random() * dates.length)];
-    http.get(`http://${__ENV.HOSTNAME}/age/${randomDate}`);
+    http.get(`http://${hostname}/age/${randomDate}`);
     sleep(1);
 };