merge: Add binary to decimal test file and convert function to es6 model. (#806)

* Added Hex to Binary conversion

* Add Binary to decimal test

* Fix Style

Conversions/test/BinaryToDecimal.test.js

@@ -0,0 +1,15 @@
+import binaryToDecimal from '../BinaryToDecimal'
+
+describe('BinaryToDecimal', () => {
+  it('expects to return correct decimal value', () => {
+    expect(binaryToDecimal('1000')).toBe(8)
+  })
+
+  it('expects to return correct hexadecimal value for more than one hex digit', () => {
+    expect(binaryToDecimal('01101000')).toBe(104)
+  })
+
+  it('expects to return correct hexadecimal value for padding-required binary', () => {
+    expect(binaryToDecimal('1000101')).toBe(69)
+  })
+})

Conversions/test/HexToBinary.test.js

@@ -0,0 +1,19 @@
+import hexToBinary from '../HexToBinary'
+
+describe('hexToBinary', () => {
+  it('expects to return correct hexadecimal value', () => {
+    expect(hexToBinary('8')).toBe('1000')
+  })
+
+  it('expects to return correct binary value for more than one hex digit', () => {
+    expect(hexToBinary('EA')).toBe('11101010')
+  })
+
+  it('expects to test its robustness as it should be case-insensitive', () => {
+    expect(hexToBinary('4d')).toBe('01001101')
+  })
+
+  it('expects to return correct hexadecimal value, matching (num).toString(2)', () => {
+    expect(hexToBinary('F')).toBe(parseInt('F', 16).toString(2))
+  })
+})