Added test for forms

src/molecules/forms/form.test.tsx

@@ -1,5 +1,5 @@
 import React from "react";
-import { render } from "@testing-library/react";
+import { render, fireEvent, wait, getByText } from "@testing-library/react";
 import { Form } from "./form";
 import faker from "faker";
 
@@ -16,4 +16,40 @@ describe("Form", () => {
         // Assert
         expect(getByText(expected)).not.toBeNull();
     });
+
+    test("when onSubmit set, calls handler upon submit", async () => {
+        // Arrange
+        let calledTimes = 0;
+        const buttonText = faker.random.word();
+        const handleClick = () => {
+            calledTimes++;
+        };
+
+        // Act
+        const { container } = render(
+            <Form onSubmit={handleClick}>
+                <button>{buttonText}</button>
+            </Form>
+        );
+        fireEvent.submit(getByText(container, buttonText));
+
+        // Assert
+        await wait(() => {
+            expect(calledTimes).toEqual(1);
+        });
+    });
+
+    test("when given prop cssClassName, renders with class name", () => {
+        // Arrange
+        const testClassName = "testClassName";
+
+        // Act
+        const { container } = render(
+            <Form onSubmit={() => {}} cssClassName={testClassName} />
+        );
+        const result = container.querySelector("." + testClassName);
+
+        // Assert
+        expect(result).not.toBeNil();
+    });
 });