feat(name): introduces lastName module

+ Add lastName module
+ Move firstName tests to its own module folder
+ Add JA locale support

src/name/__tests__/name.test.ts

@@ -1,7 +1,11 @@
 import name from '..';
 
 describe('Name', () => {
-    it('has firstName module', () => {
+    it('should have firstName module', () => {
         expect(name).toHaveProperty('firstName');
     });
+
+    it('should have lastName module', () => {
+        expect(name).toHaveProperty('lastName');
+    });
 });

src/name/__tests__/firstName.test.ts → src/name/firstName/__tests__/firstName.test.ts

@@ -1,6 +1,6 @@
-import { Locale } from '../../types/locale';
-import firstName from '../firstName';
-import locales from '../firstName/locales';
+import { Locale } from '../../../types/locale';
+import firstName from '..';
+import locales from '../locales';
 
 describe('Name | firstName', () => {
     it('returns a random first name', () => {

src/name/firstName/locales/__tests__/locales.test.ts

@@ -8,4 +8,8 @@ describe('Name | firstName | Locales', () => {
     it('has pt_BR', () => {
         expect(locales).toHaveProperty('pt_BR');
     });
+
+    it('has ja', () => {
+        expect(locales).toHaveProperty('ja');
+    });
 });

src/name/firstName/locales/index.ts

@@ -1,7 +1,8 @@
 import { LocaleObject } from '../../../types/locale';
 import en from './en/collection';
+import ja from './ja/collection';
 import pt_BR from './pt_BR/collection';
 
-const locales: LocaleObject<string[]> = { en, pt_BR };
+const locales: LocaleObject<string[]> = { en, ja, pt_BR };
 
 export default locales;

src/name/firstName/locales/ja/collection.ts

@@ -0,0 +1,23 @@
+export default [
+    '大和',
+    '大翔',
+    '太一',
+    '心愛',
+    '愛菜',
+    '杏',
+    '樹',
+    '海翔',
+    '結愛',
+    '結菜',
+    '結衣',
+    '美咲',
+    '美羽',
+    '翼',
+    '莉子',
+    '蒼空',
+    '蓮',
+    '陸斗',
+    '陽翔',
+    '陽菜',
+    '颯太',
+];

src/name/index.ts

@@ -1,3 +1,4 @@
 import firstName from './firstName';
+import lastName from './lastName';
 
-export default { firstName };
+export default { firstName, lastName };

src/name/lastName/__tests__/lastName.test.ts

@@ -0,0 +1,26 @@
+import { Locale } from '../../../types/locale';
+import lastName from '..';
+import locales from '../locales';
+
+describe('Name | lastName', () => {
+    it('should return a random last name from given locale', () => {
+        const name = lastName(Locale.PT_BR);
+        const { pt_BR } = locales;
+
+        expect(pt_BR).toContain(name);
+    });
+
+    it(`should return a random last name in ${Locale.EN} by default`, () => {
+        const name = lastName();
+        const { en } = locales;
+
+        expect(en).toContain(name);
+    });
+
+    it(`should return a random last name in ${Locale.EN} when given locale is not found`, () => {
+        const name = lastName(Locale.RU);
+        const { en } = locales;
+
+        expect(en).toContain(name);
+    });
+});

src/name/lastName/index.ts

@@ -0,0 +1,10 @@
+import { Locale } from '../../types/locale';
+import getLocale from '../../helpers/getLocale';
+import locales from './locales';
+import randomArrayElement from '../../helpers/randomArrayElement';
+
+export default function lastName(selectedLocale?: Locale) {
+    const collection = getLocale(locales, selectedLocale);
+
+    return randomArrayElement(collection);
+}

src/name/lastName/locales/__tests__/locales.test.ts

@@ -0,0 +1,15 @@
+import locales from '..';
+
+describe('Name | lastName | Locales', () => {
+    it('should have en locale', () => {
+        expect(locales).toHaveProperty('en');
+    });
+
+    it('should have pt_BR locale', () => {
+        expect(locales).toHaveProperty('pt_BR');
+    });
+
+    it('should have ja locale', () => {
+        expect(locales).toHaveProperty('ja');
+    });
+});