Add and update tests

test/baseGenerators/numeric/ConstantNumberGenerator.test.ts

@@ -0,0 +1,32 @@
+import { ConstantNumberGenerator } from '../../../src';
+
+describe('StringGenerator class', () => {
+  it('should return a specified string', () => {
+    const generator = new ConstantNumberGenerator({
+      num: 3
+    })
+
+    expect(generator.get()).toBe(3);
+  });
+
+  it('should raise an error on undefined value', () => {
+    const conf = { num: undefined }
+
+    //@ts-ignore
+    expect(() => new ConstantNumberGenerator(conf)).toThrow();
+  });
+
+  it('should raise an error on null value', () => {
+    const conf = { num: null }
+
+    //@ts-ignore
+    expect(() => new ConstantNumberGenerator(conf)).toThrow();
+  });
+
+  it('should raise an error on not-number value', () => {
+    const conf = { num: "string" }
+
+    //@ts-ignore
+    expect(() => new ConstantNumberGenerator(conf)).toThrow();
+  });
+});

test/baseGenerators/string/ConstantStringGenerator.test.ts

@@ -27,4 +27,11 @@ describe('StringGenerator class', () => {
     //@ts-ignore
     expect(() => new ConstantStringGenerator(conf)).toThrow();
   });
+
+  it('should raise an error on non-string value', () => {
+    const conf = { text: 1 }
+
+    //@ts-ignore
+    expect(() => new ConstantStringGenerator(conf)).toThrow();
+  });
 });