Merge pull request #59 from SaidShah/add-tests-for-molecules-text-area-form-field

Added tests for TextAreaFormField

Author: wintondeshong

src/molecules/form-fields/text-area-form-field.test.tsx

@@ -1,6 +1,9 @@
 import React from "react";
 import { render } from "@testing-library/react";
-import { TextAreaFormField } from "./text-area-form-field";
+import {
+    InvalidInputClassName,
+    TextAreaFormField,
+} from "./text-area-form-field";
 import faker from "faker";
 
 describe("TextAreaFormField", () => {
@@ -16,4 +19,97 @@ describe("TextAreaFormField", () => {
         // Assert
         expect(getByLabelText(expected)).not.toBeNull();
     });
+
+    test("when has errorMessages prop, renders with error messages", () => {
+        // Arrange
+        const expected = faker.random.words();
+        const firstErrorMessage = faker.random.words();
+        const secondErrorMessage = faker.random.words();
+
+        // Act
+        const { getByText } = render(
+            <TextAreaFormField
+                label={expected}
+                onChange={() => {}}
+                errorMessages={[firstErrorMessage, secondErrorMessage]}
+            />
+        );
+
+        // Assert
+        expect(getByText(firstErrorMessage)).not.toBeNil();
+        expect(getByText(secondErrorMessage)).not.toBeNil();
+    });
+
+    test("when has errorMessage prop, renders with error message", () => {
+        // Arrange
+        const expected = faker.random.words();
+        const testErrorMessage = faker.random.words();
+
+        // Act
+        const { getByText } = render(
+            <TextAreaFormField
+                label={expected}
+                onChange={() => {}}
+                errorMessage={testErrorMessage}
+            />
+        );
+
+        // Assert
+        expect(getByText(testErrorMessage)).not.toBeNil();
+    });
+
+    test(`when isValid prop is false, renders with ${InvalidInputClassName} class name`, () => {
+        // Arrange
+        const expected = faker.random.words();
+
+        // Act
+        const { container } = render(
+            <TextAreaFormField
+                label={expected}
+                onChange={() => {}}
+                isValid={false}
+            />
+        );
+        const result = container.querySelector("." + InvalidInputClassName);
+
+        // Assert
+        expect(result).not.toBeNil();
+    });
+
+    test(`when isValid prop is true, renders without ${InvalidInputClassName} class name`, () => {
+        // Arrange
+        const expected = faker.random.words();
+
+        // Act
+        const { container } = render(
+            <TextAreaFormField
+                label={expected}
+                onChange={() => {}}
+                isValid={true}
+            />
+        );
+        const result = container.querySelector("." + InvalidInputClassName);
+
+        // Assert
+        expect(result).toBeNil();
+    });
+
+    test("when required prop set, renders with required text", () => {
+        // Arrange
+        const expected = faker.random.words();
+        const requiredText = "*";
+
+        // Act
+        const { container } = render(
+            <TextAreaFormField
+                label={expected}
+                onChange={() => {}}
+                required={true}
+            />
+        );
+        const htmlLabelTag = container.getElementsByTagName("label");
+
+        // Assert
+        expect(htmlLabelTag[0].textContent).toContain(requiredText);
+    });
 });

src/molecules/form-fields/text-area-form-field.tsx

@@ -8,6 +8,7 @@ import { StringUtils, CollectionUtils } from "andculturecode-javascript-core";
 // -----------------------------------------------------------------------------------------
 
 const COMPONENT_CLASS = "c-form-field";
+export const InvalidInputClassName = "-invalid";
 
 // #endregion Constants
 
@@ -60,7 +61,7 @@ const TextAreaFormField: React.FC<TextAreaFormFieldProps> = (
         value,
     } = props;
 
-    const cssIsValid = isValid ? "" : "-invalid";
+    const cssIsValid = isValid ? "" : InvalidInputClassName;
     const fieldId = props.fieldId ?? uuid.v4();
     const hasErrorMessage = StringUtils.hasValue(errorMessage);
     const hasErrors = CollectionUtils.hasValues(errorMessages);