tp note fini

.gitignore

@@ -5,3 +5,7 @@ package-lock.json
 .idea/inspectionProfiles/
 
 .idea/
+
+.vscode/
+
+coverage/

.vscode/launch.json

@@ -1,43 +0,0 @@
-{
-  "version": "0.2.0",
-  "configurations": [
-    {
-      "name": "Start app",
-      "request": "launch",
-      "runtimeArgs": ["run-script", "start"],
-      "runtimeExecutable": "npm",
-      "skipFiles": ["<node_internals>/**"],
-      "type": "node",
-      "sourceMaps": true,
-      "console": "integratedTerminal"
-    },
-    {
-      "name": "Debug app",
-      "request": "launch",
-      "runtimeArgs": ["run-script", "dev", "debug"],
-      "runtimeExecutable": "npm",
-      "skipFiles": ["<node_internals>/**"],
-      "type": "node",
-      "sourceMaps": true,
-      "console": "integratedTerminal"
-    },
-    {
-      "type": "node",
-      "request": "launch",
-      "name": "Jest All",
-      "program": "${workspaceFolder}/node_modules/.bin/jest",
-      "args": ["--runInBand"],
-      "console": "integratedTerminal",
-      "internalConsoleOptions": "neverOpen"
-    },
-    {
-      "type": "node",
-      "request": "launch",
-      "name": "Jest Current File",
-      "program": "${workspaceFolder}/node_modules/.bin/jest",
-      "args": ["${fileBasenameNoExtension}", "--config", "jest.config.js"],
-      "console": "integratedTerminal",
-      "internalConsoleOptions": "neverOpen"
-    }
-  ]
-}

README.md

@@ -1 +1,2 @@
-# unit-test-template-typescript
+# Méthodologies de tests et tests unitaires
+

package.json

@@ -23,8 +23,8 @@
   },
   "dependencies": {
     "nodemon": "^3.1.0",
-    "reflect-metadata": "^0.2.1",
+    "reflect-metadata": "^0.2.2",
     "ts-node": "^10.9.2",
     "tsyringe": "^4.8.0"
   }
-}
+}

src/exercises/DoubleToUnique/index.test.ts

@@ -0,0 +1,21 @@
+import {removeDuplicates} from "./index";
+
+describe("Test removeDuplicates", () => {
+    it.each([
+        { arr: [3, 2, 4, 3, 5, 2], expected: [3, 2, 4, 5] },
+        { arr: [1, 1, 1, 1, 1], expected: [1] },
+        { arr: [1, 2, 3, 4, 5], expected: [1, 2, 3, 4, 5] }
+    ])(
+        "should remove duplicates from array",
+        ({ arr, expected }) => {
+            const result = removeDuplicates(arr);
+            expect(result).toEqual(expected);
+            console.log(`Test with array = ${arr}, expected = ${expected}, result = ${result}`);
+        }
+    );
+
+    it("should throw an exception when the array is empty", () => {
+        const emptyArray: number[] = [];
+        expect(() => removeDuplicates(emptyArray)).toThrowError("Le tableau est vide.");
+    });
+});

src/exercises/DoubleToUnique/index.ts

@@ -0,0 +1,13 @@
+export function removeDuplicates(arr: number[]): number[] {
+  if (arr.length === 0) {
+    throw new Error("Le tableau est vide.");
+  }
+
+  const uniqueArray: number[] = [];
+  arr.forEach((num) => {
+    if (!uniqueArray.includes(num)) {
+      uniqueArray.push(num);
+    }
+  });
+  return uniqueArray;
+}

src/exercises/TP2/fibo/index.test.ts

@@ -0,0 +1,57 @@
+import { fibo } from "./index";
+
+describe("fibo", () => {
+  it("should return 0 when given 0", () => {
+    // arrange
+    const input = 0;
+    const expected = 0;
+
+    // act
+    const result = fibo(input);
+
+    // assert
+    expect(result).toBe(expected);
+  });
+
+  it("should return 1 when given 1", () => {
+    // arrange
+    const input = 1;
+    const expected = 1;
+
+    // act
+    const result = fibo(input);
+
+    // assert
+    expect(result).toBe(expected);
+  });
+
+  it.each([
+    {
+      input: 2,
+      expected: 1,
+    },
+    {
+      input: 3,
+      expected: 2,
+    },
+    {
+      input: 4,
+      expected: 3,
+    },
+    {
+      input: 5,
+      expected: 5,
+    },
+    {
+      input: 6,
+      expected: 8,
+    },
+  ])("should return fibo(n) when given n", ({ input, expected }) => {
+    // arrange
+    // act
+    const result = fibo(input);
+
+    // assert
+    expect(result).toBe(expected);
+  });
+});

src/exercises/TP2/fibo/index.ts

@@ -0,0 +1,5 @@
+export function fibo(n: number): number {
+  if (n <= 1) return n;
+
+  return fibo(n - 2) + fibo(n - 1);
+}

src/exercises/TP2/fizzbuzz/index.test.ts

@@ -0,0 +1,64 @@
+import { fizzBuzz } from "./index";
+
+describe("fizzBuzz", () => {
+  it.each([
+    {
+      input: 1,
+      expected: "1",
+    },
+    {
+      input: 2,
+      expected: "2",
+    },
+    {
+      input: 4,
+      expected: "4",
+    },
+  ])(
+    "should return the number as string when given a non multiple of 3, 5 or 15",
+    ({ input, expected }) => {
+      // arrange
+      // act
+      const result = fizzBuzz(input);
+
+      // assert
+      expect(result).toBe(expected);
+    }
+  );
+
+  it.each([3, 6, 9])(
+    "should return 'Fizz' when given a multiple of 3",
+    (input) => {
+      // arrange
+      // act
+      const result = fizzBuzz(input);
+
+      // assert
+      expect(result).toBe("Fizz");
+    }
+  );
+
+  it.each([5, 10, 20])(
+    'should return "Buzz" when given a multiple of 5',
+    (input) => {
+      // arrange
+      // act
+      const result = fizzBuzz(input);
+
+      // assert
+      expect(result).toBe("Buzz");
+    }
+  );
+
+  it.each([15, 30, 45])(
+    'should return "FizzBuzz" when given a multiple of 15',
+    (input) => {
+      // arrange
+      // act
+      const result = fizzBuzz(input);
+
+      // assert
+      expect(result).toBe("FizzBuzz");
+    }
+  );
+});

src/exercises/TP2/fizzbuzz/index.ts

@@ -0,0 +1,7 @@
+export function fizzBuzz(input: number): string {
+  if (input % 15 === 0) return "FizzBuzz";
+  if (input % 5 === 0) return "Buzz";
+  if (input % 3 === 0) return "Fizz";
+
+  return input.toString();
+}

src/exercises/Template/index.test.ts

@@ -1,32 +0,0 @@
-import { divide } from "./index";
-
-describe("Test divide", () => {
-    it.each([
-        { foo: "", bar: "", expected: "" },
-    ])(
-        "should $foo $bar",
-        ({ foo, bar, expected }) => {
-            // act
-            // const result = function (foo, bar);
-            const result = 0;
-            // assert
-            expect(result).toEqual(expected);
-            console.log(`Test with foo = ${foo}, bar = ${bar}, expected = ${expected}, result = ${result}`);
-        }
-    );
-
-    /*
-    *
-    * If exception test
-    *
-    * */
-    it("should throw an exception when dividing by zero", () => {
-        // arrange
-        const foo = "";
-        const bar = "";
-        // act & assert
-        ///TODO
-        // expect(() => function (foo, bar).toThrow("E");
-        console.log(foo + bar);
-    });
-});

src/exercises/Template/index.ts

@@ -1,3 +0,0 @@
-export function name(foo : number) : number {
-  return foo + 1;
-}

src/exercises/addStringOfNumbers/index.test.ts

@@ -0,0 +1,115 @@
+import { addStringOfNumbers } from "./index";
+
+describe("addStringOfNumbers", () => {
+  it("should return 0 when given an empty string", () => {
+    // arrange
+    const input = "";
+    const expected = 0;
+
+    // act
+    const result = addStringOfNumbers(input);
+
+    // assert
+    expect(result).toBe(expected);
+  });
+
+  it.each([
+    { input: "12", expected: 12 },
+    { input: "1.5", expected: 1.5 },
+    { input: "-2", expected: -2 },
+    { input: "-2.333", expected: -2.333 },
+  ])(
+      "should return n when given the string representation of n",
+      ({ input, expected }) => {
+        // arrange
+        // act
+        const result = addStringOfNumbers(input);
+
+        // assert
+        expect(result).toBe(expected);
+      }
+  );
+
+  it.each(["--4", "1-23", "3..5"])(
+      "should throw an error when given a string that is not a number",
+      (input) => {
+        // arrange
+        // act
+        const act = () => addStringOfNumbers(input);
+
+        // assert
+        expect(act).toThrow("Not valid number");
+      }
+  );
+
+  it.each([
+    { input: "2,3", expected: 5 },
+    { input: "-2.5,4", expected: 1.5 },
+    { input: "1,2,5,9", expected: 17 },
+    { input: "1,-3.2,3.7,2", expected: 3.5 },
+  ])(
+      "should add any quantity of comma separated numbers in a string",
+      ({ input, expected }) => {
+        // arrange
+        // act
+        const result = addStringOfNumbers(input);
+
+        // assert
+        expect(result).toBe(expected);
+      }
+  );
+
+  it("should throw when given a string with wrong separator", () => {
+    // arrange
+    const input = "-2.5;3";
+
+    // act
+    const act = () => addStringOfNumbers(input);
+
+    // assert
+    expect(act).toThrow("Invalid characters");
+  });
+
+  it.each([
+    { input: "//;\n1;2", expected: 3 },
+    { input: "//:\n-2.5:4", expected: 1.5 },
+    { input: "//;\n1;2;5;9", expected: 17 },
+  ])(
+      "should add any quantity of numbers separated by a custom character in a string",
+      ({ input, expected }) => {
+        // arrange
+        // act
+        const result = addStringOfNumbers(input);
+
+        // assert
+        expect(result).toBe(expected);
+      }
+  );
+
+  it.each(["//.\n1.2", "//-\n-2.5-4"])(
+      "should throw when the custom separator is not valid",
+      (input) => {
+        // arrange
+        // act
+        const act = () => addStringOfNumbers(input);
+
+        // assert
+        expect(act).toThrow("Invalid custom separator");
+      }
+  );
+
+  it.each([
+    { input: "//;;;\n1;;;2", expected: 3 },
+    { input: "//::\n-2.5::4", expected: 1.5 },
+  ])(
+      "should add any quantity of numbers separated by a custom character in a string",
+      ({ input, expected }) => {
+        // arrange
+        // act
+        const result = addStringOfNumbers(input);
+
+        // assert
+        expect(result).toBe(expected);
+      }
+  );
+});

src/exercises/addStringOfNumbers/index.ts

@@ -0,0 +1,41 @@
+const defaultSeparator = ",";
+
+export function addStringOfNumbers(input: string) {
+  if (input === "") return 0;
+
+  const customSeparatorMatches = input.match(/^\/\/(.+)\n/);
+  const customSeparator = customSeparatorMatches
+      ? customSeparatorMatches[1]
+      : null;
+
+  const separator = customSeparator || defaultSeparator;
+  const isContainingBadSeparator = /[-.]/.test(separator);
+  if (isContainingBadSeparator) throw new Error("Invalid custom separator");
+
+  const isSeparatorMadeWithSameCharacters = !separator
+      .split("")
+      .some((char) => char !== separator[0]);
+  if (!isSeparatorMadeWithSameCharacters)
+    throw new Error("Invalid custom separator");
+
+  // Regex to catch any character that is not a digit, dot, minus sign or separator
+  const badCharactersRegex = new RegExp(`[^-.\\d${separator}]`);
+
+  const focusedExpression = customSeparator ? input.split("\n")[1] : input;
+  const isContainingBadCharacters = badCharactersRegex.test(focusedExpression);
+  if (isContainingBadCharacters) throw new Error("Invalid characters");
+
+  if (!focusedExpression.includes(separator)) {
+    const num = Number(focusedExpression);
+    if (isNaN(num)) throw new Error("Not valid number");
+    return num;
+  }
+
+  const arr = focusedExpression.split(separator);
+  return arr.reduce((acc, str) => {
+    const num = Number(str);
+    if (isNaN(num)) throw new Error("Not valid numbers");
+
+    return acc + num;
+  }, 0);
+}

src/exercises/convertToLowercase/index.test.ts

@@ -0,0 +1,19 @@
+import { convertToLowercase } from "./index";
+
+describe("convertToLowercase", () => {
+  it.each([
+    { input: "ToTO", expected: "toto" },
+    { input: "ToTo", expected: "toto" },
+    { input: "TOTo", expected: "toto" },
+  ])(
+    "should return the input in lowercase when all letters are uppercases",
+    ({ input, expected }) => {
+      // Arrange
+      // Act
+      const result = convertToLowercase(input);
+
+      // Assert
+      expect(result).toStrictEqual(expected);
+    }
+  );
+});

src/exercises/convertToLowercase/index.ts

@@ -0,0 +1,3 @@
+export function convertToLowercase(input: string): string {
+  return input.toLowerCase();
+}

src/exercises/divide/index.test.ts

@@ -1,6 +1,6 @@
 import { divide } from "./index";
 
-describe("Test divide", () => {
+describe("Test hexToDecimal", () => {
     it.each([
         { a: 2, b: 1, expected: 2 },
         { a: 10, b: 2, expected: 5 },

src/exercises/isBeforeNow/index.test.ts

@@ -0,0 +1,37 @@
+import { isBeforeNow } from "./index";
+
+const dateBefore = new Date("2022-01-01T00:00:00.000Z");
+const dateNow = new Date("2023-01-01T00:00:00.000Z");
+const dateAfter = new Date("2024-01-01T00:00:00.000Z");
+
+describe("isBeforeNow", () => {
+  beforeEach(() => {
+    jest.useFakeTimers({
+      now: dateNow,
+    });
+
+    // or
+
+    // jest.spyOn(Date, "now").mockReturnValue(dateNow.getTime());
+  });
+
+  afterEach(() => {
+    jest.useRealTimers();
+
+    // or
+
+    // jest.restoreAllMocks();
+  });
+
+  it("returns true if the date is before now", () => {
+    expect(isBeforeNow(dateBefore)).toBe(true);
+  });
+
+  it("returns false if the date is now", () => {
+    expect(isBeforeNow(dateNow)).toBe(false);
+  });
+
+  it("returns false if the date is after now", () => {
+    expect(isBeforeNow(dateAfter)).toBe(false);
+  });
+});

src/exercises/isBeforeNow/index.ts

@@ -0,0 +1,3 @@
+export function isBeforeNow(date: Date): boolean {
+  return date.getTime() < Date.now();
+}

src/exercises/mockMathPow/index.test.ts

@@ -0,0 +1,18 @@
+import { square } from "./index";
+
+describe("square", () => {
+  it("returns the number pow 2", () => {
+    // Arrange
+    const num = 3;
+    Math.pow = jest.fn(); //.mockReturnValue(2);
+
+    // Act
+    square(num);
+
+    // Assert
+    expect(Math.pow).toHaveBeenCalledTimes(1);
+    expect(Math.pow).toHaveBeenCalledWith(3, 2);
+
+    // expect(square(num)).toBe(2);
+  });
+});

src/exercises/mockMathPow/index.ts

@@ -0,0 +1,3 @@
+export function square(value: number): number {
+  return Math.pow(value, 2);
+}

src/exercises/mockStringUppercase/index.test.ts

@@ -0,0 +1,18 @@
+import { toUpperCase } from "./index";
+
+describe("toUpperCase", () => {
+  it("returns the string in uppercase", () => {
+    // Arrange
+    const input = "hello";
+    String.prototype.toUpperCase = jest.fn(); //.mockReturnValue("BLABLA");
+
+    // Act
+    toUpperCase(input);
+
+    // Assert
+    expect(input.toUpperCase).toHaveBeenCalledTimes(1);
+    expect(input.toUpperCase).toHaveBeenCalledWith();
+
+    // expect(toUpperCase(input)).toBe("BLABLA");
+  });
+});

src/exercises/mockStringUppercase/index.ts

@@ -0,0 +1,3 @@
+export function toUpperCase(value: string): string {
+  return value.toUpperCase();
+}

src/exercises/multiply/index.test.ts

@@ -1,4 +1,4 @@
-import {multiply} from "./index";
+import { multiply, multiplyArrays } from "./index";
 
 describe("Test multiply", () => {
   it.each([
@@ -19,3 +19,16 @@ describe("Test multiply", () => {
   );
 });
 
+describe('multiplyArrays', () => {
+    test('multiplie les éléments de deux tableaux de même taille', () => {
+        expect(multiplyArrays([3, 5, 2], [4, 3, 1])).toEqual([12, 15, 2]);
+    });
+
+    test('lève une exception si les tableaux ne sont pas de même taille', () => {
+        expect(() => multiplyArrays([1, 2, 3], [4, 5])).toThrowError('Les tableaux ne sont pas de même taille.');
+    });
+
+    test('lève une exception si les tableaux sont vides', () => {
+        expect(() => multiplyArrays([], [])).toThrowError('Les tableaux sont vides.');
+    });
+});

src/exercises/multiply/index.ts

@@ -1,11 +1,22 @@
-async function start() {
-  console.log("Application starts...");
-
-  console.log("Application ends...");
-}
-
-start();
-
 export function multiply (a : number, b : number) : number {
   return a*b;
+}
+
+export function multiplyArrays(arr1: number[], arr2: number[]): number[] {
+  // Vérifier si les tableaux sont vides
+  if (arr1.length === 0 || arr2.length === 0) {
+    throw new Error("Les tableaux sont vides.");
+  }
+
+  // Vérifier si les tableaux ont la même taille
+  if (arr1.length !== arr2.length) {
+    throw new Error("Les tableaux ne sont pas de même taille.");
+  }
+
+  // Multiplier les éléments des tableaux
+  const result: number[] = [];
+  for (let i = 0; i < arr1.length; i++) {
+    result.push(arr1[i] * arr2[i]);
+  }
+  return result;
 }

src/exercises/multiplyArrays/index.test.ts

@@ -0,0 +1,47 @@
+import { multiplyArrays } from "./index";
+
+describe("multiplyArrays", () => {
+  it.each([
+    {
+      arr1: [1, 2, 3],
+      arr2: [4, 5, 6],
+      expected: [4, 10, 18],
+    },
+    {
+      arr1: [3, 2, 3],
+      arr2: [4, 5, 3],
+      expected: [12, 10, 9],
+    },
+  ])("should multiply all numbers of 2 arrays", ({ arr1, arr2, expected }) => {
+    // Arrange
+    // Act
+    const result = multiplyArrays(arr1, arr2);
+
+    // Assert
+    expect(result).toStrictEqual(expected);
+  });
+
+  it("should throw when one array is empty", () => {
+    // Arrange
+    const arr1 = [1, 2, 3];
+    const arr2: number[] = [];
+
+    // Act
+    const act = () => multiplyArrays(arr1, arr2);
+
+    // Assert
+    expect(act).toThrow("Arrays must have at least one element");
+  });
+
+  it("should throw when arrays length is different", () => {
+    // Arrange
+    const arr1 = [1, 2, 3];
+    const arr2 = [4, 5];
+
+    // Act
+    const act = () => multiplyArrays(arr1, arr2);
+
+    // Assert
+    expect(act).toThrow("Arrays must have the same length");
+  });
+});

src/exercises/multiplyArrays/index.ts

@@ -0,0 +1,16 @@
+export function multiplyArrays(a: number[], b: number[]): number[] {
+  if (a.length === 0 || b.length === 0) {
+    throw new Error("Arrays must have at least one element");
+  }
+
+  if (a.length !== b.length) {
+    throw new Error("Arrays must have the same length");
+  }
+
+  const output: number[] = new Array(a.length);
+  for (let i = 0; i < output.length; i++) {
+    output[i] = a[i] * b[i];
+  }
+
+  return output;
+}

src/exercises/multiplyArrays2/index.test.ts

@@ -0,0 +1,44 @@
+import { multiplyArrays } from "./index";
+
+describe("multiplyArrays", () => {
+  it.each([
+    { arr1: [1, 2, 3], arr2: [4, 5, 6], expected: [4, 10, 18] },
+    { arr1: [-1, -2, -3], arr2: [4, -5, 6], expected: [-4, 10, -18] },
+    {
+      arr1: [-1.1, -2.1, -3.1],
+      arr2: [4, -5, 6],
+      expected: [-4.4, 10.5, -18.6],
+    },
+  ])("should multiply two arrays", ({ arr1, arr2, expected }) => {
+    // arrange
+    // act
+    const result = multiplyArrays(arr1, arr2);
+
+    // assert
+    expect(result).toStrictEqual(expected);
+  });
+
+  it("should throw an error if arrays are not the same length", () => {
+    // arrange
+    const arr1 = [1, 2, 3];
+    const arr2 = [4, 5];
+
+    // act
+    const act = () => multiplyArrays(arr1, arr2);
+
+    // assert
+    expect(act).toThrow("Arrays must be the same length");
+  });
+
+  it("should throw an error if arrays are empty", () => {
+    // arrange
+    const arr1: number[] = [];
+    const arr2: number[] = [];
+
+    // act
+    const act = () => multiplyArrays(arr1, arr2);
+
+    // assert
+    expect(act).toThrow("Arrays must not be empty");
+  });
+});

src/exercises/multiplyArrays2/index.ts

@@ -0,0 +1,10 @@
+export function multiplyArrays(arr1: number[], arr2: number[]): number[] {
+  const isSameLength = arr1.length === arr2.length;
+
+  if (!isSameLength) throw new Error("Arrays must be the same length");
+
+  const isOneEmpty = arr1.length === 0 || arr2.length === 0;
+  if (isOneEmpty) throw new Error("Arrays must not be empty");
+
+  return arr1.map((num, index) => num * arr2[index]);
+}

src/exercises/removeDuplicates/index.test.ts

@@ -0,0 +1,14 @@
+import { removeDuplicates } from "./index";
+
+describe("removeDuplicates", () => {
+  it("should multiply all numbers of 2 arrays", () => {
+    // Arrange
+    const arr = [1, 2, 2, 2, 3, 3, 4];
+
+    // Act
+    const result = removeDuplicates(arr);
+
+    // Assert
+    expect(result).toStrictEqual([1, 2, 3, 4]);
+  });
+});

src/exercises/removeDuplicates/index.ts

@@ -0,0 +1,3 @@
+export function removeDuplicates(a: number[]): number[] {
+  return Array.from(new Set(a));
+}

src/exercises/removeDuplicates2/index.test.ts

@@ -0,0 +1,14 @@
+import { removeDuplicates } from "./index";
+
+describe("removeDuplicates", () => {
+  it("should remove duplicates from an array", () => {
+    // arrange
+    const arr = [1, 2, 2, 3, 4, 4, 5];
+
+    // act
+    const result = removeDuplicates(arr);
+
+    // assert
+    expect(result).toStrictEqual([1, 2, 3, 4, 5]);
+  });
+});

src/exercises/removeDuplicates2/index.ts

@@ -0,0 +1,3 @@
+export function removeDuplicates(arr: number[]): number[] {
+  return Array.from(new Set(arr));
+}

src/exercises/testAnException/index.test.ts

@@ -0,0 +1,14 @@
+import { throwAnException } from "./index";
+
+describe("testAnException", () => {
+  it("should throw an exception", () => {
+    // Arrange
+    // Act
+    const act = () => {
+      throwAnException();
+    };
+
+    // Assert
+    expect(act).toThrow("I am an exception");
+  });
+});

src/exercises/testAnException/index.ts

@@ -0,0 +1,3 @@
+export function throwAnException(): void {
+  throw new Error("I am an exception");
+}

src/exercises/validation/age/index.test.ts

@@ -0,0 +1,37 @@
+import "reflect-metadata";
+import { container } from "tsyringe";
+import { AgeValidation } from "./index";
+
+describe("AgeValidation", () => {
+  const ageValidation = container.resolve(AgeValidation);
+
+  describe("validateAge", () => {
+    it.each([
+      { input: "1", expected: 1 },
+      { input: "18", expected: 18 },
+      { input: "100", expected: 100 },
+    ])(
+      "should return a number when given a string if represents a valid age",
+      ({ input, expected }) => {
+        // arrange
+        // act
+        const result = ageValidation.validateAge(input);
+
+        // assert
+        expect(result).toBe(expected);
+      }
+    );
+
+    it.each([{ input: "-2", expected: "Input must be a valid age" }])(
+      "should throw an error if input does not represent a valid age",
+      ({ input, expected }) => {
+        // arrange
+        // act
+        const act = () => ageValidation.validateAge(input);
+
+        // assert
+        expect(act).toThrow(expected);
+      }
+    );
+  });
+});

src/exercises/validation/age/index.ts

@@ -0,0 +1,18 @@
+import { singleton } from "tsyringe";
+import { NumberValidation } from "../number";
+
+@singleton()
+export class AgeValidation {
+  public constructor(private numberValidation: NumberValidation) {}
+
+  public validateAge(input: string) {
+    try {
+      let number: number = this.numberValidation.validateInteger(input);
+      number = this.numberValidation.validatePositive(input);
+
+      return number;
+    } catch (error) {
+      throw new Error("Input must be a valid age");
+    }
+  }
+}

src/exercises/validation/number/index.test.ts

@@ -0,0 +1,109 @@
+import "reflect-metadata"
+import { container } from "tsyringe";
+import { NumberValidation } from "./index";
+
+describe("NumberValidation", () => {
+  const numberValidation = container.resolve(NumberValidation);
+
+  describe("validateNumber", () => {
+    it.each([
+      { input: "0", expected: 0 },
+      { input: "1", expected: 1 },
+      { input: "-1", expected: -1 },
+      { input: "1.67", expected: 1.67 },
+      { input: "-1.67", expected: -1.67 },
+      { input: "-1e7", expected: -1e7 },
+    ])(
+      "should return a number when given a string if valid",
+      ({ input, expected }) => {
+        // arrange
+        // act
+        const result = numberValidation.validateNumber(input);
+
+        // assert
+        expect(result).toBe(expected);
+      }
+    );
+
+    it("should throw an error if input is not a number", () => {
+      // arrange
+      const input = "a";
+
+      // act
+      const act = () => numberValidation.validateNumber(input);
+
+      // assert
+      expect(act).toThrow("Input must be a number");
+    });
+  });
+
+  describe("validateInteger", () => {
+    it.each([
+      { input: "0", expected: 0 },
+      { input: "1", expected: 1 },
+      { input: "-1", expected: -1 },
+      { input: "1e3", expected: 1e3 },
+    ])(
+      "should return an integer when given a string if valid",
+      ({ input, expected }) => {
+        // arrange
+        // act
+        const result = numberValidation.validateInteger(input);
+
+        // assert
+        expect(result).toBe(expected);
+      }
+    );
+
+    it.each([
+      { input: "1.67", expected: "Input must be an integer" },
+      { input: "-1.67", expected: "Input must be an integer" },
+      { input: "1e-3", expected: "Input must be an integer" },
+    ])(
+      "should throw an error if input is not an integer",
+      ({ input, expected }) => {
+        // arrange
+        // act
+        const act = () => numberValidation.validateInteger(input);
+
+        // assert
+        expect(act).toThrow(expected);
+      }
+    );
+  });
+
+  describe("validatePositive", () => {
+    it.each([
+      { input: "0", expected: 0 },
+      { input: "1", expected: 1 },
+      { input: "1.67", expected: 1.67 },
+      { input: "1e3", expected: 1e3 },
+    ])(
+      "should return a positive number when given a string if valid",
+      ({ input, expected }) => {
+        // arrange
+        // act
+        const result = numberValidation.validatePositive(input);
+
+        // assert
+        expect(result).toBe(expected);
+      }
+    );
+
+    it.each([
+      { input: "-1", expected: "Input must be positive" },
+      { input: "-1.67", expected: "Input must be positive" },
+      { input: "-1e3", expected: "Input must be positive" },
+    ])(
+      "should throw an error if input is not positive",
+      ({ input, expected }) => {
+        // arrange
+        // act
+        const act = () => numberValidation.validatePositive(input);
+
+        // assert
+        expect(act).toThrow(expected);
+      }
+    );
+  });
+});

src/exercises/validation/number/index.ts

@@ -0,0 +1,34 @@
+import { singleton } from "tsyringe";
+
+@singleton()
+export class NumberValidation {
+  public validateNumber(input: string): number {
+    const number = Number(input);
+
+    if (isNaN(number)) {
+      throw new Error("Input must be a number");
+    }
+
+    return number;
+  }
+
+  public validateInteger(input: string): number {
+    const number = this.validateNumber(input);
+
+    if (!Number.isInteger(number)) {
+      throw new Error("Input must be an integer");
+    }
+
+    return number;
+  }
+
+  public validatePositive(input: string): number {
+    const number = this.validateNumber(input);
+
+    if (number < 0) {
+      throw new Error("Input must be positive");
+    }
+
+    return number;
+  }
+}

src/note/HexColorToDecimal/index.test.ts

@@ -0,0 +1,31 @@
+import {hexToRgb} from "./index"
+
+describe("hexToRgb", () => {
+    it.each([
+        { hex: '#BD3F0A', expected: 'rgb(189,63,10)' },
+        { hex: '#A3BF7E', expected: 'rgb(163,191,126)' },
+    ])(
+        "should convert $hex to $expected",
+        ({ hex, expected }: { hex: string, expected: string }) => {
+            // act
+            const result = hexToRgb(hex);
+            // assert
+            expect(result).toEqual(expected);
+            console.log(`Test with hex = ${hex}, expected = ${expected}, result = ${result}`);
+        }
+    );
+
+    it.each([
+        { hex: '', expectedErrorMsg: "Couleur hexadécimale invalide, ne doit pas être vide" },
+        { hex: 'BD3F0A', expectedErrorMsg: "Couleur hexadécimale invalide, doit commencer par #" },
+        { hex: '#', expectedErrorMsg: "Couleur hexadécimale invalide, doit contenir 6 caractères" },
+        { hex: '#12345', expectedErrorMsg: "Couleur hexadécimale invalide, doit contenir 6 caractères" },
+        { hex: '#GHIJKL', expectedErrorMsg: "Couleur hexadécimale invalide, caractères invalides" },
+    ])(
+        "should throw an error for invalid hex $hex",
+        ({ hex, expectedErrorMsg }: { hex: string, expectedErrorMsg: string }) => {
+            // assert
+            expect(() => hexToRgb(hex)).toThrow(expectedErrorMsg);
+        }
+    );
+});

src/note/HexColorToDecimal/index.ts

@@ -0,0 +1,28 @@
+import {parse} from "../hexToDecimal"
+
+export function hexToRgb(hex: string): string {
+    if (hex === "") {
+        throw new Error("Couleur hexadécimale invalide, ne doit pas être vide");
+    }
+
+    if (!hex.startsWith("#")) {
+        throw new Error("Couleur hexadécimale invalide, doit commencer par #");
+    }
+
+    hex = hex.slice(1);
+
+    if (hex.length !== 6) {
+        throw new Error("Couleur hexadécimale invalide, doit contenir 6 caractères");
+    }
+
+    if (!/^[0-9A-F]{6}$/.test(hex.toUpperCase())) {
+        throw new Error("Couleur hexadécimale invalide, caractères invalides");
+    }
+
+    const r: number = parse(hex.slice(0, 2));
+    const g: number = parse(hex.slice(2, 4));
+    const b: number = parse(hex.slice(4, 6));
+
+
+    return `rgb(${r},${g},${b})`;
+}

src/note/hexToDecimal/index.test.ts

@@ -0,0 +1,35 @@
+import {parse} from "./index"
+
+describe("parse", () => {
+    it.each([
+        {a: 'CE', expected: 206},
+        {a: '9B', expected: 155},
+        {a: 'E6', expected: 230},
+        {a: '25', expected: 37},
+    ])(
+        "should return conversion of $a hex value to decimal value",
+        ({a, expected}: { a: string, expected: number }) => {
+            // act
+            const result = parse(a);
+            // assert
+            expect(result).toEqual(expected);
+            console.log(`Test with a = ${a}, expected = ${expected}, result = ${result}`);
+        }
+    );
+
+    it("should throw an error for empty string", () => {
+        expect(() => parse("")).toThrow("Teinte hexadécimale invalide, teinte vide");
+    });
+
+    it("should throw an error for invalid length", () => {
+        expect(() => parse("B")).toThrow("Teinte hexadécimale invalide, la teinte doit contenir 2 caractères");
+        expect(() => parse("2BC")).toThrow("Teinte hexadécimale invalide, la teinte doit contenir 2 caractères");
+    });
+
+    it("should throw an error for invalid characters", () => {
+        expect(() => parse("-G")).toThrow("Teinte hexadécimale invalide, caractère non valide");
+        expect(() => parse("1.")).toThrow("Teinte hexadécimale invalide, caractère non valide");
+        expect(() => parse("G0")).toThrow("Teinte hexadécimale invalide, caractère non valide");
+        expect(() => parse("0G")).toThrow("Teinte hexadécimale invalide, caractère non valide");
+    });
+});

src/note/hexToDecimal/index.ts

@@ -0,0 +1,22 @@
+export function parse(a: string): number {
+    const alphabet: string = "0123456789ABCDEF";
+
+    if (a === "") {
+        throw new Error("Teinte hexadécimale invalide, teinte vide");
+    }
+
+    if (a.length !== 2) {
+        throw new Error("Teinte hexadécimale invalide, la teinte doit contenir 2 caractères");
+    }
+
+    const hexToDecimal = (char: string): number => {
+        const value = alphabet.indexOf(char.toUpperCase());
+        if (value == -1) {
+            throw new Error(" Teinte hexadécimale invalide, caractère non valide");
+        } else {
+            return value;
+        }
+    };
+
+    return hexToDecimal(a[0]) * 16 + hexToDecimal(a[1]);
+}