Write unit tests

Signed-off-by: alumag <10659903+alumag@users.noreply.github.com>

index.js

@@ -4,7 +4,9 @@ const path = require('path');
 const ETHNICITIES = ['jew', 'muslim', 'christian', 'druze', 'other'];
 const GENDERS = ['male', 'female'];
 
-const getFilePath = filename => path.join(__dirname, 'data', filename);
+const environment = process.env.JEST_WORKER_ID ? 'testing' : 'production';
+
+const getFilePath = filename => path.join(__dirname, environment === 'testing' ? 'test' : 'data', filename);
 
 const FILES = {
   'first:jew:male': getFilePath('jew.male.first'),
@@ -72,7 +74,7 @@ function getName(filename) {
       return name
     }
   }
-  return "";
+  return '';
 }
 
 function getFirstName(ethnicity, gender) {

index.spec.js

@@ -0,0 +1,67 @@
+const { getFirstName, getLastName, getFullName } = require('.');
+
+describe('test hebrew-names', () => {
+  describe('getFirstName', () => {
+    test.each([
+      ['christian', 'male', 'אליאס'],
+      ['christian', 'female', 'מריה'],
+      ['druze', 'male', 'סולימאן'],
+      ['druze', 'female', 'נור'],
+      ['jew', 'male', 'דוד'],
+      ['jew', 'female', 'נועה'],
+      ['muslim', 'male', 'מוחמד'],
+      ['muslim', 'female', 'פאטמה'],
+      ['other', 'male', 'דניאל'],
+      ['other', 'female', 'ניקול'],
+    ])('should get random first name for ethnicity=%s and gender=%s', (ethnicity, gender, expectedName) => {
+      expect(getFirstName(ethnicity, gender)).toMatch(expectedName);
+    });
+
+    test('should get random first name', () => {
+      expect(getFirstName()).toStrictEqual(expect.any(String));
+    });
+
+    test('should throw an error with unsupported gender', () => {
+      expect(() => getFirstName(undefined, 'unknown')).toThrow(TypeError);
+    });
+
+    test('should throw an error with unsupported ethnicity', () => {
+      expect(() => getFirstName('unknown', undefined)).toThrow(TypeError);
+    });
+  });
+
+  describe('getLastName', () => {
+    test.each([
+      ['christian', "ח'ורי"],
+      ['druze', 'חלבי'],
+      ['jew', 'כהן'],
+      ['muslim', 'אגבאריה'],
+      ['other', ''],
+    ])('should get random last name for ethnicity=%s', (ethnicity, expectedName) => {
+      expect(getLastName(ethnicity)).toMatch(expectedName);
+    });
+
+    test('should get random last name', () => {
+      expect(getLastName()).toStrictEqual(expect.any(String));
+    });
+
+
+    test('should throw an error with unsupported ethnicity', () => {
+      expect(() => getLastName('unknown')).toThrow(TypeError);
+    });
+  });
+
+  describe('getFullName', () => {
+    test('should get random full name', () => {
+      expect(getFullName()).toStrictEqual(expect.any(String));
+    });
+
+    test('should throw an error with unsupported gender', () => {
+      expect(() => getFullName(undefined, 'unknown')).toThrow(TypeError);
+    });
+
+    test('should throw an error with unsupported ethnicity', () => {
+      expect(() => getFullName('unknown', undefined)).toThrow(TypeError);
+    });
+  });
+});