fix: add missing tests

tests/OnspringClient.spec.ts

@@ -1,7 +1,10 @@
 import { OnspringClient } from '../src/OnspringClient';
 import { expect } from 'chai';
 
-describe('OnspringClient Tests', function () {
+describe('OnspringClient', function () {
+  const baseUrl = 'https://api.onspring.com';
+  const apiKey = 'apiKey';
+
   it('should be defined', function () {
     expect(OnspringClient).to.not.be.undefined;
   });
@@ -15,73 +18,72 @@ describe('OnspringClient Tests', function () {
   });
 
   it('should throw an error when the baseUrl is null', function () {
-    expect(() => new OnspringClient(null, 'apiKey')).to.throw(
+    expect(() => new OnspringClient(null, apiKey)).to.throw(
       'baseUrl must be an absolute and well-formed URI.'
     );
   });
 
   it('should throw an error when the baseUrl is undefined', function () {
-    expect(() => new OnspringClient(undefined, 'apiKey')).to.throw(
+    expect(() => new OnspringClient(undefined, apiKey)).to.throw(
       'baseUrl must be an absolute and well-formed URI.'
     );
   });
 
   it('should throw an error when the baseUrl is an empty string', function () {
-    expect(() => new OnspringClient('', 'apiKey')).to.throw(
+    expect(() => new OnspringClient('', apiKey)).to.throw(
       'baseUrl must be an absolute and well-formed URI.'
     );
   });
 
   it('should throw an error when the baseUrl is a string with only spaces', function () {
-    expect(() => new OnspringClient(' ', 'apiKey')).to.throw(
+    expect(() => new OnspringClient(' ', apiKey)).to.throw(
       'baseUrl must be an absolute and well-formed URI.'
     );
   });
 
   it('should throw an error when the baseUrl is not a valid url', function () {
-    expect(() => new OnspringClient('api.onspring.com', 'apiKey')).to.throw(
+    expect(() => new OnspringClient('api.onspring.com', apiKey)).to.throw(
       'baseUrl must be an absolute and well-formed URI.'
     );
   });
 
   it('should throw an error when the apiKey is null', function () {
-    expect(() => new OnspringClient('https://api.onspring.com', null)).to.throw(
+    expect(() => new OnspringClient(baseUrl, null)).to.throw(
       'apiKey cannot be null/empty/whitespace.'
     );
   });
 
   it('should throw an error when the apiKey is undefined', function () {
-    expect(() => new OnspringClient('https://api.onspring.com', undefined)).to.throw(
+    expect(() => new OnspringClient(baseUrl, undefined)).to.throw(
       'apiKey cannot be null/empty/whitespace.'
     );
   });
 
   it('should throw an error when the apiKey is an empty string', function () {
-    expect(() => new OnspringClient('https://api.onspring.com', '')).to.throw(
+    expect(() => new OnspringClient(baseUrl, '')).to.throw(
       'apiKey cannot be null/empty/whitespace.'
     );
   });
 
   it('should throw an error when the apiKey is a string with only spaces', function () {
-    expect(() => new OnspringClient('https://api.onspring.com', ' ')).to.throw(
+    expect(() => new OnspringClient(baseUrl, ' ')).to.throw(
       'apiKey cannot be null/empty/whitespace.'
     );
   });
 
   it('should not throw an error when the baseUrl is a valid url', function () {
-    expect(() => new OnspringClient('https://api.onspring.com', 'apiKey')).to.not.throw();
+    expect(() => new OnspringClient(baseUrl, apiKey)).to.not.throw();
   });
 
   it('should not throw an error when the baseUrl is a valid url', function () {
-    expect(() => new OnspringClient('http://api.onspring.com', 'apiKey')).to.not.throw();
+    expect(() => new OnspringClient('http://api.onspring.com', apiKey)).to.not.throw();
   });
 
   it('should not throw an error when the apiKey is a valid string', function () {
-    expect(() => new OnspringClient('https://api.onspring.com', 'apiKey')).to.not.throw();
+    expect(() => new OnspringClient(baseUrl, apiKey)).to.not.throw();
   });
 
   it('should have a client property', function () {
-    const client = new OnspringClient('https://api.onspring.com', 'apiKey');
-    expect(client).to.have.property('client');
+    expect(new OnspringClient(baseUrl, apiKey)).to.have.property('_client');
   });
 });