153 lines
4.2 KiB
Markdown
153 lines
4.2 KiB
Markdown
## Install dev server packages
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docker run --rm -w /app -v $PWD:/app -u $(id -u):$(id -u) node npm install
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## Start the dev server
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docker run --rm --init -it -v $PWD:/usr/src/app -p 8080:8080 btroops
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or, run the start script
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./run-start
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Visit `localhost:8080` to view.
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## Run a test
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You need chrome and chromedriver installed to run the integration tests. The Dockerfile builds an image that does that. Then run the test with that image.
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`--network host` gives the container internet access. Necessary if tests make outside requests.
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docker run --rm -it -v $PWD:/usr/src/app --network host btroops node google_test
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TODO add firefox and geckodriver
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The container can access the outside without setting a port or a network. The network or port is only necessary when wanting to connect the host machine to the docker container. You can run a test that spawns a test server and uses the webdriver to load the page like this:
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docker run --rm -it -v $PWD:/usr/src/app btroops npm run test:integ
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or, run the test script
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./run-test
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### Debugging a Jest integration test
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`page.test.js`
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```javascript
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// webdriver setup here
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it('loads the page', async () => {
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await driver.get("http://localhost:3005");
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expect(await driver.getTitle()).toEqual('Infantry Combat Solo Basic');
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// where you want your breakpoint
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debugger;
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// necessary for restarting from the debugger to work
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driver.quit();
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});
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```
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Start the container with a bash prompt.
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docker run --rm --init -it -v $PWD:/usr/src/app btroops bash
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Start the debugger with Jest integration test setup
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NODE_INSPECT_RESUME_ON_START=1 node inspect ./node_modules/jest/bin/jest.js --config jest.config.integ.cjs --runInBand test/integration/page.test.js
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You can do the whole thing in one command like this.
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docker run --rm --init -it -v $PWD:/usr/src/app -e NODE_INSPECT_RESUME_ON_START=1 btroops node inspect ./node_modules/jest/bin/jest.js --config jest.config.integ.cjs --runInBand test/integration/page.test.js
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```
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< Debugger listening on ws://127.0.0.1:9229/bcaf4c18-b204-49c6-8ccf-600fe8be0506
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< For help, see: https://nodejs.org/en/docs/inspector
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<
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connecting to 127.0.0.1:9229 ... ok
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< Debugger attached.
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<
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< Jest config file read.
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<
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<
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< Spawning server process...
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<
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< Development server running at http://localhost:3005
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< Build completed in 10ms
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<
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<
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break in test/integration/page.test.js:26
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24 await counter.click();
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25 expect(await counter.getAttribute('class')).toEqual(expect.stringContaining('selected'));
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>26 debugger;
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27 });
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28 afterAll(() => driver.quit());
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debug>
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```
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To run the test again without having to quit the debugger, use `c` to continue past the breakpoint and then `r` to restart.
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```
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debug> c
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< PASS test/integration/page.test.js (141.892 s)
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<
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< ✓ loads the page (8 ms)
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<
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< ✓ selects a trooper by clicking on their counter (140792 ms)
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<
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<
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< Test Suites: 1 passed, 1 total
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< Tests: 2 passed, 2 total
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< Snapshots: 0 total
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< Time: 141.925 s
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< Ran all test suites matching /test\/integration\/page.test.js/i.
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<
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< Stopping server.
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<
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< Waiting for the debugger to disconnect...
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<
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debug> r
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< Debugger listening on ws://127.0.0.1:9229/9ba4c56c-03ff-46c4-92d1-3b519374d1be
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< For help, see: https://nodejs.org/en/docs/inspector
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<
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connecting to 127.0.0.1:9229 ... ok
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< Debugger attached.
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<
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< Jest config file read.
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<
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<
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< Spawning server process...
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<
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< Development server running at http://localhost:3005
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< Build completed in 11ms
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<
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<
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break in test/integration/page.test.js:26
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24 await counter.click();
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25 expect(await counter.getAttribute('class')).toEqual(expect.stringContaining('selected'));
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>26 debugger;
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27 });
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28 afterAll(() => driver.quit());
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debug>
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```
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### References
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https://nodejs.org/en/learn/getting-started/debugging
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https://nodejs.org/api/debugger.html
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## Rough way to save the SVG map generated by JavaScript client-side
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const XMLS = new XMLSerializer();
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const svg_xmls = XMLS.serializeToString(svg);
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let bl = new Blob([svg_xmls], {type: "text/html" });
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let a = document.createElement("a");
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a.href = URL.createObjectURL(bl);
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a.download = "map.svg";
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a.hidden = true;
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document.body.appendChild(a);
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a.innerHTML = "something random - nobody will see this, it doesn't matter what you put here";
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a.click()
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