Converted tests to typescript. (#6181)

* Converted tests to typescript.

* Run all tests.

* Fixed tests.

* Removed cypress from every installation.

* Use cache for libreoffice.

* Fixed cypress install.

* Fixed cypress install.

src/tests/backend/fuzzImportTest.ts

@@ -0,0 +1,68 @@
+/*
+ * Fuzz testing the import endpoint
+ * Usage: node fuzzImportTest.js
+ */
+const settings = require('../container/loadSettings').loadSettings();
+const common = require('./common');
+const host = `http://${settings.ip}:${settings.port}`;
+const froth = require('mocha-froth');
+const axios = require('axios');
+const apiKey = common.apiKey;
+const apiVersion = 1;
+const testPadId = `TEST_fuzz${makeid()}`;
+
+const endPoint = function (point: string, version?:number) {
+    version = version || apiVersion;
+    return `/api/${version}/${point}?apikey=${apiKey}`;
+};
+
+console.log('Testing against padID', testPadId);
+console.log(`To watch the test live visit ${host}/p/${testPadId}`);
+console.log('Tests will start in 5 seconds, click the URL now!');
+
+setTimeout(() => {
+    for (let i = 1; i < 1000000; i++) { // 1M runs
+        setTimeout(async () => {
+            await runTest(i);
+        }, i * 100); // 100 ms
+    }
+}, 5000); // wait 5 seconds
+
+async function runTest(number: number) {
+    await axios.get(`${host + endPoint('createPad')}&padID=${testPadId}`)
+        .then(() => {
+            const req = axios.post(`${host}/p/${testPadId}/import`)
+                .then(() => {
+                    console.log('Success');
+                    let fN = '/test.txt';
+                    let cT = 'text/plain';
+
+                    // To be more aggressive every other test we mess with Etherpad
+                    // We provide a weird file name and also set a weird contentType
+                    if (number % 2 == 0) {
+                        fN = froth().toString();
+                        cT = froth().toString();
+                    }
+
+                    const form = req.form();
+                    form.append('file', froth().toString(), {
+                        filename: fN,
+                        contentType: cT,
+                    });
+                });
+        })
+        .catch((err:any) => {
+        // @ts-ignore
+            throw new Error('FAILURE', err);
+    })
+}
+
+function makeid() {
+    let text = '';
+    const possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+
+    for (let i = 0; i < 5; i++) {
+        text += possible.charAt(Math.floor(Math.random() * possible.length));
+    }
+    return text;
+}