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| 1 | +import { readdirSync } from "fs"; |
| 2 | +import { LanguageGroups, LanguageList } from "../../src/ts/constants/languages"; |
| 3 | +import { Language } from "@monkeytype/contracts/schemas/languages"; |
| 4 | + |
| 5 | +describe("languages", () => { |
| 6 | + describe("LanguageList", () => { |
| 7 | + it("should not have duplicates", () => { |
| 8 | + const duplicates = LanguageList.filter( |
| 9 | + (item, index) => LanguageList.indexOf(item) !== index |
| 10 | + ); |
| 11 | + expect(duplicates).toEqual([]); |
| 12 | + }); |
| 13 | + it("should have all related json files", () => { |
| 14 | + const languageFiles = listLanguageFiles(); |
| 15 | + |
| 16 | + const missingLanguageFiles = LanguageList.filter( |
| 17 | + (it) => !languageFiles.includes(it) |
| 18 | + ).map((it) => `fontend/static/languages/${it}.json`); |
| 19 | + |
| 20 | + expect(missingLanguageFiles, "missing language json files").toEqual([]); |
| 21 | + }); |
| 22 | + it("should not have additional related json files", () => { |
| 23 | + const LanguageFiles = listLanguageFiles(); |
| 24 | + |
| 25 | + const additionalLanguageFiles = LanguageFiles.filter( |
| 26 | + (it) => !LanguageList.some((language) => language === it) |
| 27 | + ).map((it) => `fontend/static/languages/${it}.json`); |
| 28 | + |
| 29 | + expect( |
| 30 | + additionalLanguageFiles, |
| 31 | + "additional language json files not declared in frontend/src/ts/constants/languages.ts" |
| 32 | + ).toEqual([]); |
| 33 | + }); |
| 34 | + }); |
| 35 | + describe("LanguageGroups", () => { |
| 36 | + it("should contain each language once", () => { |
| 37 | + const languagesWithMultipleGroups = []; |
| 38 | + |
| 39 | + const groupByLanguage = new Map<Language, string>(); |
| 40 | + |
| 41 | + for (const group of Object.keys(LanguageGroups)) { |
| 42 | + for (const language of LanguageGroups[group] as Language[]) { |
| 43 | + if (groupByLanguage.has(language)) { |
| 44 | + languagesWithMultipleGroups.push(language); |
| 45 | + } |
| 46 | + groupByLanguage.set(language, group); |
| 47 | + } |
| 48 | + } |
| 49 | + |
| 50 | + expect( |
| 51 | + languagesWithMultipleGroups, |
| 52 | + "languages with multiple groups" |
| 53 | + ).toEqual([]); |
| 54 | + |
| 55 | + expect( |
| 56 | + Array.from(groupByLanguage.keys()).sort(), |
| 57 | + "every language has a group" |
| 58 | + ).toEqual(LanguageList.sort()); |
| 59 | + }); |
| 60 | + }); |
| 61 | +}); |
| 62 | + |
| 63 | +function listLanguageFiles() { |
| 64 | + return readdirSync(import.meta.dirname + "/../../static/languages").map( |
| 65 | + (it) => it.substring(0, it.length - 5) as Language |
| 66 | + ); |
| 67 | +} |
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