add jest tests for ksp task grabbing

frontend/.vscode/launch.json

@@ -0,0 +1,32 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Jest - All",
+            "program": "${workspaceFolder}/node_modules/.bin/jest",
+            "args": ["--runInBand"],
+            "console": "integratedTerminal",
+            "internalConsoleOptions": "neverOpen",
+            "windows": {
+              "program": "${workspaceFolder}/node_modules/jest/bin/jest"
+            }
+          },
+          {
+            "type": "node",
+            "request": "launch",
+            "name": "Jest - Current",
+            "program": "${workspaceFolder}/node_modules/.bin/jest",
+            "args": ["${relativeFile}"],
+            "console": "integratedTerminal",
+            "internalConsoleOptions": "neverOpen",
+            "windows": {
+              "program": "${workspaceFolder}/node_modules/jest/bin/jest"
+            }
+          }
+    ]
+}

frontend/jest.config.js

@@ -0,0 +1,9 @@
+module.exports = {
+    transform: {
+        '^.+\\.ts?$': 'ts-jest',
+        '^.+\\.svelte$': 'svelte-jester',
+    },
+    testEnvironment: 'jsdom',
+    testRegex: '.*\\.test?\\.ts$',
+    moduleFileExtensions: ['ts', 'js', 'svelte']
+};

frontend/package.json

@@ -12,14 +12,20 @@
     "@rollup/plugin-commonjs": "^14.0.0",
     "@rollup/plugin-node-resolve": "^8.4.0",
     "@rollup/plugin-typescript": "^6.0.0",
+    "@testing-library/svelte": "^3.0.0",
     "@tsconfig/svelte": "^1.0.0",
+    "@types/jest": "^26.0.14",
+    "jest": "^26.5.3",
+    "node-fetch": "^2.6.1",
     "rollup": "^2.3.4",
     "rollup-plugin-livereload": "^2.0.0",
     "rollup-plugin-svelte": "^6.0.0",
     "rollup-plugin-terser": "^7.0.0",
     "svelte": "^3.0.0",
     "svelte-check": "^1.0.0",
+    "svelte-jester": "^1.1.5",
     "svelte-preprocess": "^4.0.0",
+    "ts-jest": "^26.4.1",
     "tslib": "^2.0.0",
     "typescript": "^3.9.3"
   },

frontend/src/ksp-task-grabber.ts

@@ -52,12 +52,14 @@ export function parseTaskId(id: string): ParsedTaskId | null {
     return { rocnik, z: !!z, serie, uloha }
 }
 
-function getLocation(id: string, solution: boolean): TaskLocation | null {
-    const m = /^(\d+)-(Z?)(\d)-(\d)$/.exec(id)
-    if (!m) return null
-    const [_, rocnik, z, serie, uloha] = m
+function getLocation(id: string, solution: boolean): TaskLocation {
+    const parsedId = parseTaskId(id)
+    if (!parsedId) {
+        throw new Error("Can not parse " + id)
+    }
+    const { rocnik, z, serie, uloha } = parsedId
     const urlX = solution ? "reseni" : "zadani"
-    if (z == 'Z') {
+    if (z) {
         return {
             url: `/z/ulohy/${rocnik}/${urlX}${serie}.html`,
             startElement: `task-${id}`
@@ -79,7 +81,7 @@ function parseTask(startElementId: string, doc: HTMLDocument): TaskAssignmentDat
 
     let e = titleElement
 
-    const titleMatch = /^(\d+-Z?\d+-\d+) (.*?)( \((\d+) bod.*\))?$/.exec(e.innerText.trim())
+    const titleMatch = /^(\d+-Z?\d+-\d+) (.*?)( \((\d+) bod.*\))?$/.exec(e.textContent!.trim())
     if (!titleMatch) {
         var [_, id, name, __, points] = ["", startElementId, "Neznámé jméno úlohy", "", ""]
     } else {
@@ -95,7 +97,7 @@ function parseTask(startElementId: string, doc: HTMLDocument): TaskAssignmentDat
     while (!e.classList.contains("story") &&
         //    !e.classList.contains("clearfloat") &&
            e.tagName.toLowerCase() != "h3" &&
-           e.innerText.trim() != "Řešení"
+           e.textContent!.trim() != "Řešení"
         )
     {
         elements.push(e)
@@ -112,7 +114,7 @@ function parseTask(startElementId: string, doc: HTMLDocument): TaskAssignmentDat
     let r = ""
     for (const e of elements) {
         // hack: remove the paragraph with the matching text. Occurs in KSP-H, but is useless in this context.
-        if (e.innerText.trim().replace(/\s+/g, " ") == "Toto je praktická open-data úloha. V odevzdávacím systému si necháte vygenerovat vstupy a odevzdáte příslušné výstupy. Záleží jen na vás, jak výstupy vyrobíte.") {
+        if (e.textContent!.trim().replace(/\s+/g, " ") == "Toto je praktická open-data úloha. V odevzdávacím systému si necháte vygenerovat vstupy a odevzdáte příslušné výstupy. Záleží jen na vás, jak výstupy vyrobíte.") {
             continue;
         }
 
@@ -132,10 +134,10 @@ function parseTaskStatuses(doc: HTMLDocument): TaskStatus[] {
     const rows = Array.from(doc.querySelectorAll("table.zs-tasklist tr")).slice(1) as HTMLTableRowElement[]
     return rows.map(r => {
         const submitted = !r.classList.contains("zs-unsubmitted")
-        const id = r.cells[0].innerText.trim()
-        const type = r.cells[1].innerText.trim()
-        const name = r.cells[2].innerText.trim()
-        const pointsStr = r.cells[4].innerText.trim()
+        const id = r.cells[0].textContent!.trim()
+        const type = r.cells[1].textContent!.trim()
+        const name = r.cells[2].textContent!.trim()
+        const pointsStr = r.cells[4].textContent!.trim()
         const pointsMatch = /((–|\.|\d)+) *\/ *(\d+)/.exec(pointsStr)
         if (!pointsMatch) throw new Error()
         const points = +pointsMatch[1]
@@ -166,16 +168,6 @@ async function loadTask({ url, startElement }: TaskLocation): Promise<TaskAssign
     return parseTask(startElement, html)
 }
 
-function virtualTask(id: string): TaskAssignmentData {
-    return {
-        id,
-        description: "úloha je virtuální a neexistuje",
-        name: id,
-        points: 0,
-        titleHtml: "<h3>Virtuální úloha</h3>"
-    }
-}
-
 export function isLoggedIn(): boolean {
     return !!document.querySelector(".auth a[href='/profil/profil.cgi']")
 }
@@ -196,13 +188,9 @@ export async function grabTaskStates(kspIds: string[]): Promise<Map<string, Task
 }
 
 export async function grabAssignment(id: string): Promise<TaskAssignmentData> {
-    const l = getLocation(id, false)
-    if (!l) return virtualTask(id)
-    return await loadTask(l)
+    return await loadTask(getLocation(id, false))
 }
 
 export async function grabSolution(id: string): Promise<TaskAssignmentData> {
-    const l = getLocation(id, true)
-    if (!l) return virtualTask(id)
-    return await loadTask(l)
+    return await loadTask(getLocation(id, true))
 }

frontend/src/tests/grabber.test.ts

@@ -0,0 +1,76 @@
+import * as g from '../ksp-task-grabber'
+import { readFileSync } from 'fs';
+import { resolve } from 'path';
+import type { TaskDescriptor, TasksFile } from '../tasks';
+
+const node_fetch: any = require('node-fetch')
+
+global.fetch = function(url: string, init: any) {
+    return node_fetch(new URL(url, "https://ksp.mff.cuni.cz").href, init)
+} as any
+
+const tasks_json = readFileSync("../tasks.json").toString()
+const tasks: TasksFile = JSON.parse(tasks_json)
+
+
+describe('tasks.json validation', () => {
+    test("unique ids", () => {
+        const allIds = tasks.tasks.map(t => t.id)
+        // no duplicate ids
+        expect(allIds).toStrictEqual(Array.from(new Set(allIds).keys()))
+    })
+
+    for (const t of tasks.tasks) {
+        test(`'${t.id}' is valid`, () => {
+            expect(t.id).not.toBe("")
+            expect(typeof t.id).toBe("string")
+            expect(t.title).toBeTruthy()
+            expect(t.position).toBeDefined()
+            expect(["open-data", "text", "label"]).toContain(t.type)
+            if (t.type == "text") {
+                expect(t.htmlContent?.trim()).toBeTruthy()
+            } else if (t.type == "open-data") {
+                expect(t.taskReference).toBeTruthy()
+                expect(g.parseTaskId(t.taskReference)).toBeTruthy()
+            }
+        })
+    }
+})
+
+describe('tasks assignment', () => {
+    for (const t of tasks.tasks) {
+        if (t.type != "open-data") continue;
+
+        test(`${t.id}`, async () => {
+            const assignment = await g.grabAssignment((t as any).taskReference)
+            expect((t as any).taskReference).toEqual(assignment.id)
+            expect(assignment.points).toBeGreaterThanOrEqual(1)
+            expect(assignment.description.trim()).toBeTruthy()
+            expect(assignment.name.trim()).toBeTruthy()
+        })
+    }
+})
+
+describe('tasks solutions', () => {
+    const refs = tasks.tasks.filter(x => x.type == "open-data")
+                            .map(x => g.parseTaskId((x as any).taskReference)!)
+    const lastSeriesZ = Math.max(... refs.filter(t =>  t.z).map(x => 10 * +x.rocnik + +x.serie))
+    const lastSeriesH = Math.max(... refs.filter(t => !t.z).map(x => 10 * +x.rocnik + +x.serie))
+    for (const t of tasks.tasks) {
+        if (t.type != "open-data") {
+            continue
+        }
+
+        const parsed = g.parseTaskId(t.taskReference)!
+        if (10 * +parsed.rocnik + +parsed.serie >= (parsed.z ? lastSeriesZ : lastSeriesH)) {
+            continue
+        }
+
+        test(`${t.id}`, async () => {
+            const sol = await g.grabSolution(t.taskReference)
+            expect(t.taskReference).toEqual(sol.id)
+            expect(sol.description.trim()).toBeTruthy()
+            expect(sol.name.trim()).toBeTruthy()
+        })
+    }
+})

frontend/tsconfig.json

@@ -2,7 +2,8 @@
   "extends": "@tsconfig/svelte/tsconfig.json",
   "compilerOptions": {
     // "target": "ES2019"
-    "strict": true
+    "strict": true,
+    "types": ["jest", "node"]
   },
 
   "include": ["src/**/*"],