exercício 1 e 2 - atrasado - teste automatizados back

modulo07/testes-automatizados/jest.config.js

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+module.exports = {
+  roots: ["<rootDir>/tests"],
+  transform: {
+    "^.+\\.tsx?$": "ts-jest",
+  },
+  testRegex: "(/__tests__/.*|(\\.|/)(test|spec))\\.tsx?$",
+  moduleFileExtensions: ["ts", "tsx", "js", "jsx", "json", "node"],
+};

modulo07/testes-automatizados/package.json

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+{
+  "name": "jest-template",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "node ./node_modules/jest/bin/jest.js"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@types/jest": "^25.2.3",
+    "@types/node": "^14.0.6",
+    "jest": "^26.0.1",
+    "ts-jest": "^26.1.0",
+    "ts-node-dev": "^1.0.0-pre.44",
+    "typescript": "^3.9.3"
+  }
+}

modulo07/testes-automatizados/redme.md

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+- **Exercício 1**
+
+Para começar, você deve criar um programa que verifique se um usuário pode fazer uma compra ou não. Ele deve receber um objeto `user` (com nome e saldo) e um valor de compra. Caso o saldo seja maior ou igual ao valor de compra você deve retornar um novo usuário (com o mesmo nome e o saldo atualizado depois da compra). Caso contrário, retorne `undefined`
+
+```tsx
+function performPurchase(user: User, value: number): User | undefined;
+```
+
+a) _Crie uma interface para representar o usuário_
+
+       export interface User {
+            name: string;
+            balance: number;
+        }
+
+b) _Implemente a função_
+
+            describe("Teste", () => {
+                test("Consigo pagar?", () => {
+                const result = performPurchase({ name: "Ofelia", balance: 200 }, 300);
+                expect(result).toBe(undefined);
+                });
+            });
+
+- **Exercício 2**
+
+Agora vamos criar testes para essa função. Lembre-se de criar o arquivo com o padrão `<nome>.test.ts` na pasta `tests`
+
+a) _Faça um teste com um usuário com o saldo maior do que o valor de compra_
+
+import { performPurchase } from "../src";
+import { User } from "../src/model/types";
+
+    describe("Teste", () => {
+    const user: User = {
+        name: "Ofélia",
+        balance: 300,
+    };
+    test("Consigo pagar? saldo maior que o valor de compra", () => {
+        const result = performPurchase(user, 200);
+        expect(result).toEqual({
+        name: "Ofélia",
+        balance: 100,
+        });
+    });
+    });
+
+    //.toEqual pode ser usado com arrays e objetos
+
+b) _Faça um teste com um usuário com o saldo igual ao valor de compra_
+
+        test("Consigo pagar? saldo igual o valor de compra", () => {
+        const result = performPurchase(user, 300);
+        expect(result).toEqual({
+        ...user,
+        balance: 0,
+        });
+        });
+
+c) _Faça um teste com um usuário com o saldo menor do que o valor de compra_
+
+         test("Consigo pagar? saldo menor que o valor de compra", () => {
+            const result = performPurchase(user, 500);
+            expect(result).toEqual(undefined);
+            });

modulo07/testes-automatizados/src/index.ts

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+import { User } from "./model/types";
+
+export const performPurchase = (
+  user: User,
+  value: number
+): User | undefined => {
+  if (user.balance >= value) {
+    return {
+      ...user,
+      balance: user.balance - value,
+    };
+  }
+  if (user.balance < value) {
+    return undefined;
+  }
+};

modulo07/testes-automatizados/src/model/types.ts

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+export interface User {
+  name: string;
+  balance: number;
+}

modulo07/testes-automatizados/tests/index.spec.ts

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+import { performPurchase } from "../src";
+import { User } from "../src/model/types";
+
+// describe.skip pra pular o teste
+describe("Teste", () => {
+  const user: User = {
+    name: "Ofélia",
+    balance: 300,
+  };
+  test("Consigo pagar? saldo maior que o valor de compra", () => {
+    const result = performPurchase(user, 200);
+    expect(result).toEqual({
+      name: "Ofélia",
+      balance: 100,
+    });
+  });
+
+  test("Consigo pagar? saldo igual o valor de compra", () => {
+    const result = performPurchase(user, 300);
+    expect(result).toEqual({
+      ...user,
+      balance: 0,
+    });
+  });
+
+  test("Consigo pagar? saldo menor que o valor de compra", () => {
+    const result = performPurchase(user, 500);
+    expect(result).toEqual(undefined);
+  });
+});
+
+//.toEqual pode ser usado com arrays e objetos

modulo07/testes-automatizados/tsconfig.json

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+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig.json to read more about this file */
+
+    /* Basic Options */
+    // "incremental": true,                   /* Enable incremental compilation */
+    "target": "es6" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */,
+    "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */,
+    // "lib": [],                             /* Specify library files to be included in the compilation. */
+    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    // "checkJs": true,                       /* Report errors in .js files. */
+    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    "sourceMap": true /* Generates corresponding '.map' file. */,
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    "outDir": "./build" /* Redirect output structure to the directory. */,
+    "rootDir": "./src" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,
+    // "composite": true,                     /* Enable project compilation */
+    // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */
+    "removeComments": true /* Do not emit comments to output. */,
+    // "noEmit": true,                        /* Do not emit outputs. */
+    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
+    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+    /* Strict Type-Checking Options */
+    "strict": true /* Enable all strict type-checking options. */,
+    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,              /* Enable strict null checks. */
+    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
+    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
+    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                /* Report errors on unused locals. */
+    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
+    // "noUncheckedIndexedAccess": true,      /* Include 'undefined' in index signature results */
+
+    /* Module Resolution Options */
+    // "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                       /* List of folders to include type definitions from. */
+    // "types": [],                           /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
+    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
+    // "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
+
+    /* Advanced Options */
+    "skipLibCheck": true /* Skip type checking of declaration files. */,
+    "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */
+  }
+}