solutions

src/kata1.fizzBuzz.js

@@ -1,3 +1,17 @@
-const fizzBuzz = number => {};
+const fizzBuzz = number => {
+  const divisableByThree = number % 3 === 0;
+  const divisablebyFive = number % 5 === 0;
+
+  if ( divisableByThree && divisablebyFive ) {
+    return "FizzBuzz";
+  }
+  if ( divisableByThree) {
+    return "Fizz";
+  }
+  if (divisablebyFive ) {
+    return "Buzz";
+  }
+  return number;
+};
 
 module.exports = fizzBuzz;

src/kata2.booleanToWord.js

@@ -1,3 +1,11 @@
-const booleanToWord = boolean => {};
+const booleanToWord = boolean => {
+    if(boolean === true){
+      return 'YES'
+    } else {
+      return 'NO'
+    }
+  };
+
+
 
 module.exports = booleanToWord;

src/kata3.numberToReversedDigits.js

@@ -1,3 +1,5 @@
-const numberToReversedDigits = number => {};
+const numberToReversedDigits = number => splitArray = number.toString().split("").map(Number).reverse();
+
+
 
 module.exports = numberToReversedDigits;

src/kata5.reachDestination.js

@@ -1,3 +1,7 @@
-const reachDestination = (distance, speed) => {};
+const reachDestination = (distance, speed) => {
+    const time = distance / speed;
+    const  MainTime = Math.round(time * 2) / 2;
+    return "should reach destination in " + MainTime + " hours."
+  };
 
 module.exports = reachDestination;

src/kata6.joinNames.js

@@ -1,3 +1,7 @@
-const joinNames = namesObj => {};
+const joinNames = namesObj => {
+    const names = namesObj.map(person => person.name).join(", ");
+    const comma = names.lastIndexOf(",");
+    return `${names.substr(0, comma)} &${names.substr(comma + 1)}`;
+  };
 
 module.exports = joinNames;

src/kata7.getEmployerRole.js

@@ -1,3 +1,4 @@
-const getEmployerRole = (employeeName, employees) => {};
+const getEmployerRole = (employeeName, employees) => employees.find(person => 
+    person.name === employeeName).role;
 
 module.exports = getEmployerRole;

test/kata1.fizzBuzz.test.js

@@ -1,11 +1,21 @@
 const { fizzBuzz } = require("../src");
 
 describe("fizzBuzz", () => {
-  test("returns Fizz when passed a multiple of 3", () => {});
+
+
+  test("returns Fizz when passed a multiple of 3", () => {
+    expect(fizzBuzz(9)).toEqual('Fizz')
+  });
+  test("returns Buzz when passed a multiple of 5", () => {
+    expect(fizzBuzz(5)).toBe("Buzz");
+  });
 
-  test("returns Buzz when passed a multiple of 5", () => {});
+  test("returns FizzBuzz when passed a multiple 3 and 5", () => {
+    expect(fizzBuzz(15)).toBe("FizzBuzz");
+  });
 
-  test("returns FizzBuzz when passed a multiple 3 and 5", () => {});
-
-  test("returns the number when it isn't a multiple of 3 or 5", () => {});
+  test("returns the number when it isn't a multiple of 3 or 5", () => {
+    expect(fizzBuzz(11)).toBe(11);
+  }
+  );
 });

test/kata2.booleanToWord.test.js

@@ -1,5 +1,9 @@
 const { booleanToWord } = require("../src");
 
 describe("booleanToWord", () => {
-  // how do we create specs again???
+  test('converts a boolean to string', () =>{
+    expect(booleanToWord(true)).toEqual('YES')
+  })
 });
+
+

test/kata3.numberToReversedDigits.test.js

@@ -1,5 +1,7 @@
 const { numberToReversedDigits } = require("../src");
 
 describe("numberToReversedDigits", () => {
-  test("returns a reversed array of the number's digits", () => {});
+  it("returns a reversed array of numbers", () => {
+    expect(numberToReversedDigits(6575)).toEqual([5, 7, 5, 6]);
+  });
 });

test/kata5.reachDestination.test.js

@@ -1,5 +1,7 @@
 const { reachDestination } = require("../src");
 
 describe("reachDestination", () => {
-  test("returns string with estimated time of arrival", () => {});
-});
+  it("returns string with estimated time of arrival 44/10", () => {
+    expect(reachDestination(44, 10)).toBe("should reach destination in 4.5 hours.");
+  });
+});

test/kata6.joinNames.test.js

@@ -1,5 +1,14 @@
 const { joinNames } = require("../src");
 
 describe("joinNames", () => {
-  test("returns string of names, seperated by commas and an ampersand", () => {});
+  const friendsArray = [
+    { name: "Ross" },
+    { name: "Joey" },
+    { name: "Rachel" }
+  ];
+
+
+  it("returns string of names, seperated by commas and an ampersand from the friendssArray", () => {
+    expect(joinNames(friendsArray)).toBe("Ross, Joey & Rachel");
+  });
 });

test/kata7.getEmployerRole.test.js

@@ -1,5 +1,14 @@
 const { getEmployerRole } = require("../src");
 
 describe("getEmployerRole", () => {
-  test("returns the employee's role in the company", () => {});
+  const players= [
+    { name: "Harry", role: "Striker" },
+    { name: "Sterling", role: "Winger" },
+    { name: "Mings", role: "center back" },
+    { name: "Saka", role: "winger" }
+  ];
+
+  it("returns the players role in the team", () => {
+    expect(getEmployerRole("Harry", players)).toEqual("Striker");
+  });
 });