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NumberInput.test.js
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NumberInput.test.js
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import React from "react";
import { render, fireEvent } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import DxcNumberInput from "./NumberInput.tsx";
// Mocking DOMRect for Radix Primitive Popover
global.globalThis = global;
global.DOMRect = {
fromRect: () => ({ top: 0, left: 0, bottom: 0, right: 0, width: 0, height: 0 }),
};
global.ResizeObserver = class ResizeObserver {
observe() {}
unobserve() {}
disconnect() {}
};
describe("Number input component tests", () => {
test("Number input renders with label, helper text, placeholder and increment/decrement action buttons", () => {
const { getByLabelText, getByText, queryAllByRole } = render(
<DxcNumberInput label="Number input label" helperText="Helper text" placeholder="Placeholder" />
);
const number = getByLabelText("Number input label");
expect(getByText("Number input label")).toBeTruthy();
expect(getByText("Helper text")).toBeTruthy();
expect(number.getAttribute("placeholder")).toBe("Placeholder");
expect(queryAllByRole("button").length).toBe(2);
});
test("Number input buttons' tooltip is correct", () => {
const { getByTitle } = render(<DxcNumberInput label="Number label" />);
expect(getByTitle("Decrement value")).toBeTruthy();
expect(getByTitle("Increment value")).toBeTruthy();
});
test("Number input is disabled", () => {
const { getByLabelText } = render(<DxcNumberInput label="Number label" disabled />);
const number = getByLabelText("Number label");
expect(number.disabled).toBeTruthy();
});
test("Number input is read only and cannot be incremented or decremented using the actions", async () => {
const { getByLabelText, getAllByRole } = render(<DxcNumberInput label="Number label" readOnly />);
const number = getByLabelText("Number label");
expect(number.readOnly).toBeTruthy();
const decrement = getAllByRole("button")[0];
await userEvent.click(decrement);
expect(number.value).toBe("");
const increment = getAllByRole("button")[1];
await userEvent.click(increment);
expect(number.value).toBe("");
});
test("Number input is read only and cannot be incremented or decremented using the arrow keys", () => {
const { getByLabelText } = render(<DxcNumberInput label="Number label" readOnly />);
const number = getByLabelText("Number label");
expect(number.readOnly).toBeTruthy();
fireEvent.keyDown(number, { keyCode: 38 });
expect(number.value).toBe("");
fireEvent.keyDown(number, { keyCode: 40 });
expect(number.value).toBe("");
});
test("Number input is optional", () => {
const { getByText } = render(<DxcNumberInput label="Number label" optional />);
expect(getByText("(Optional)")).toBeTruthy();
});
test("Number input is not optional: required field, displays error if not filled in", () => {
const onBlur = jest.fn();
const onChange = jest.fn();
const { getByLabelText } = render(
<DxcNumberInput label="Number input label" onBlur={onBlur} onChange={onChange} />
);
const number = getByLabelText("Number input label");
userEvent.type(number, "1");
userEvent.clear(number);
fireEvent.blur(number);
expect(onBlur).toHaveBeenCalled();
expect(onBlur).toHaveBeenCalledWith({ value: "", error: "This field is required. Please, enter a value." });
expect(onChange).toHaveBeenCalled();
expect(onChange).toHaveBeenCalledWith({ value: "", error: "This field is required. Please, enter a value." });
});
test("Suffix and prefix must be shown", () => {
const { getByText } = render(<DxcNumberInput label="Number input label" prefix="+34" suffix="USD" />);
expect(getByText("+34")).toBeTruthy();
expect(getByText("USD")).toBeTruthy();
});
test("Invalid number input renders error", () => {
const { getByText } = render(<DxcNumberInput error="Error message." />);
expect(getByText("Error message.")).toBeTruthy();
});
test("onChange function is called correctly", () => {
const onChange = jest.fn();
const { getByLabelText } = render(<DxcNumberInput label="Number input label" onChange={onChange} />);
const number = getByLabelText("Number input label");
userEvent.type(number, "t");
expect(onChange).not.toHaveBeenCalledWith({ value: "t" });
expect(number.value).toBe("");
userEvent.type(number, "1");
expect(onChange).toHaveBeenCalledWith({ value: "1" });
expect(number.value).toBe("1");
});
test("Error message is shown if the typed value is less than the min value", () => {
const onChange = jest.fn(({ value, error }) => {
expect(value).toBe("-1");
expect(error).toBe("Value must be greater than or equal to 0.");
});
const onBlur = jest.fn(({ value, error }) => {
expect(value).toBe("-1");
expect(error).toBe("Value must be greater than or equal to 0.");
});
const { getByLabelText } = render(
<DxcNumberInput label="Number input label" min={0} onBlur={onBlur} onChange={onChange} />
);
const number = getByLabelText("Number input label");
userEvent.type(number, "-1");
fireEvent.blur(number);
});
test("Cannot decrement the value if it is less than the min value", async () => {
const { getByLabelText, getAllByRole } = render(<DxcNumberInput label="Number input label" min={5} />);
const number = getByLabelText("Number input label");
userEvent.type(number, "1");
fireEvent.blur(number);
expect(number.value).toBe("1");
const decrement = getAllByRole("button")[0];
await userEvent.click(decrement);
expect(number.value).toBe("1");
});
test("Increment the value when it is less than the min value", async () => {
const { getByLabelText, getAllByRole } = render(<DxcNumberInput label="Number input label" min={5} />);
const number = getByLabelText("Number input label");
userEvent.type(number, "1");
fireEvent.blur(number);
expect(number.value).toBe("1");
const increment = getAllByRole("button")[1];
await userEvent.click(increment);
expect(number.value).toBe("5");
});
test("Error message is shown if the typed value is greater than the max value", () => {
const onChange = jest.fn();
const onBlur = jest.fn();
const { getByLabelText } = render(
<DxcNumberInput label="Number input label" max={10} onBlur={onBlur} onChange={onChange} />
);
const number = getByLabelText("Number input label");
userEvent.type(number, "12");
expect(onChange).toHaveBeenCalledTimes(2);
expect(onChange).toHaveBeenCalledWith({ value: "12", error: "Value must be less than or equal to 10." });
fireEvent.blur(number);
expect(onBlur).toHaveBeenCalled();
expect(onBlur).toHaveBeenCalledWith({ value: "12", error: "Value must be less than or equal to 10." });
});
test("Cannot increment the value if it is greater than the max value", async () => {
const { getByLabelText, getAllByRole } = render(<DxcNumberInput label="Number input label" max={10} />);
const number = getByLabelText("Number input label");
userEvent.type(number, "12");
fireEvent.blur(number);
expect(number.value).toBe("12");
const decrement = getAllByRole("button")[1];
await userEvent.click(decrement);
expect(number.value).toBe("12");
});
test("Decrement the value when it is greater than the max value", async () => {
const { getByLabelText, getAllByRole } = render(<DxcNumberInput label="Number input label" max={10} />);
const number = getByLabelText("Number input label");
userEvent.type(number, "120");
fireEvent.blur(number);
expect(number.value).toBe("120");
const decrement = getAllByRole("button")[0];
await userEvent.click(decrement);
expect(number.value).toBe("10");
});
test("Increment and decrement the value with min and max values", async () => {
const { getByLabelText, getAllByRole } = render(<DxcNumberInput label="Number input label" min={5} max={10} />);
const number = getByLabelText("Number input label");
userEvent.type(number, "1");
fireEvent.blur(number);
expect(number.value).toBe("1");
const decrement = getAllByRole("button")[0];
await userEvent.click(decrement);
expect(number.value).toBe("1");
const increment = getAllByRole("button")[1];
await userEvent.click(increment);
expect(number.value).toBe("5");
await userEvent.click(increment);
await userEvent.click(increment);
await userEvent.click(increment);
await userEvent.click(increment);
await userEvent.click(increment);
expect(number.value).toBe("10");
await userEvent.click(increment);
expect(number.value).toBe("10");
});
test("Increment and decrement the value with an integer step", async () => {
const { getByLabelText, getAllByRole } = render(<DxcNumberInput label="Number input label" step={5} />);
const number = getByLabelText("Number input label");
userEvent.type(number, "10");
fireEvent.blur(number);
expect(number.value).toBe("10");
const increment = getAllByRole("button")[1];
await userEvent.click(increment);
expect(number.value).toBe("15");
await userEvent.click(increment);
expect(number.value).toBe("20");
const decrement = getAllByRole("button")[0];
await userEvent.click(decrement);
expect(number.value).toBe("15");
await userEvent.click(decrement);
expect(number.value).toBe("10");
});
test("Increment and decrement the value with a decimal step", async () => {
const { getByLabelText, getAllByRole } = render(<DxcNumberInput label="Number input label" step={0.5} />);
const number = getByLabelText("Number input label");
userEvent.type(number, "-9");
fireEvent.blur(number);
expect(number.value).toBe("-9");
const increment = getAllByRole("button")[1];
await userEvent.click(increment);
expect(number.value).toBe("-8.5");
await userEvent.click(increment);
expect(number.value).toBe("-8");
const decrement = getAllByRole("button")[0];
await userEvent.click(decrement);
await userEvent.click(decrement);
await userEvent.click(decrement);
expect(number.value).toBe("-9.5");
await userEvent.click(decrement);
expect(number.value).toBe("-10");
});
test("Increment and decrement the value with min, max and step", async () => {
const onBlur = jest.fn();
const { getByLabelText, getAllByRole } = render(
<DxcNumberInput label="Number input label" min={5} max={20} step={8} onBlur={onBlur} />
);
const number = getByLabelText("Number input label");
userEvent.type(number, "1");
fireEvent.blur(number);
expect(onBlur).toHaveBeenCalledWith({ value: "1", error: "Value must be greater than or equal to 5." });
const increment = getAllByRole("button")[1];
await userEvent.click(increment);
expect(number.value).toBe("5");
await userEvent.click(increment);
expect(number.value).toBe("13");
await userEvent.click(increment);
expect(number.value).toBe("13");
await userEvent.click(increment);
expect(number.value).toBe("13");
const decrement = getAllByRole("button")[0];
await userEvent.click(decrement);
expect(number.value).toBe("5");
await userEvent.click(decrement);
expect(number.value).toBe("5");
await userEvent.click(decrement);
});
test("Start incrementing from 0 when the min value is less than 0 and the max value is bigger than 0", async () => {
const onBlur = jest.fn();
const { getByLabelText, getAllByRole } = render(
<DxcNumberInput label="Number input label" min={-10} max={10} step={1} onBlur={onBlur} />
);
const number = getByLabelText("Number input label");
const increment = getAllByRole("button")[1];
await userEvent.click(increment);
expect(number.value).toBe("1");
await userEvent.click(increment);
expect(number.value).toBe("2");
});
test("Start incrementing from 0 when the min value is less than 0 and the max is 0", async () => {
const { getByLabelText, getAllByRole } = render(
<DxcNumberInput label="Number input label" min={-10} max={0} step={1} />
);
const number = getByLabelText("Number input label");
const increment = getAllByRole("button")[1];
await userEvent.click(increment);
expect(number.value).toBe("0");
await userEvent.click(increment);
expect(number.value).toBe("0");
});
test("Start incrementing from the min value when it is bigger than 0", async () => {
const { getByLabelText, getAllByRole } = render(
<DxcNumberInput label="Number input label" min={2} max={10} step={0.5} />
);
const number = getByLabelText("Number input label");
const increment = getAllByRole("button")[1];
await userEvent.click(increment);
expect(number.value).toBe("2");
await userEvent.click(increment);
expect(number.value).toBe("2.5");
});
test("Start incrementing from the max value when it is less than 0", async () => {
const { getByLabelText, getAllByRole } = render(
<DxcNumberInput label="Number input label" min={-10} max={-1} step={0.5} />
);
const number = getByLabelText("Number input label");
const increment = getAllByRole("button")[1];
await userEvent.click(increment);
expect(number.value).toBe("-1");
await userEvent.click(increment);
expect(number.value).toBe("-1");
});
test("Start decrementing from 0 when the min value is less than 0 and the max value is bigger than 0", async () => {
const { getByLabelText, getAllByRole } = render(
<DxcNumberInput label="Number input label" min={-10} max={10} step={1} />
);
const number = getByLabelText("Number input label");
const decrement = getAllByRole("button")[0];
await userEvent.click(decrement);
expect(number.value).toBe("-1");
});
test("Start decrementing from 0 when the min value is 0 and the max value is bigger than 0", async () => {
const { getByLabelText, getAllByRole } = render(
<DxcNumberInput label="Number input label" min={0} max={10} step={1} />
);
const number = getByLabelText("Number input label");
const decrement = getAllByRole("button")[0];
await userEvent.click(decrement);
expect(number.value).toBe("0");
});
test("Start decrementing from the min value when it is bigger than 0", async () => {
const { getByLabelText, getAllByRole } = render(
<DxcNumberInput label="Number input label" min={2} max={10} step={0.5} />
);
const number = getByLabelText("Number input label");
const decrement = getAllByRole("button")[0];
await userEvent.click(decrement);
expect(number.value).toBe("2");
await userEvent.click(decrement);
expect(number.value).toBe("2");
});
test("Start decrementing from the max value when it is less than 0", async () => {
const { getByLabelText, getAllByRole } = render(
<DxcNumberInput label="Number input label" min={-10} max={-1} step={0.5} />
);
const number = getByLabelText("Number input label");
const decrement = getAllByRole("button")[0];
await userEvent.click(decrement);
expect(number.value).toBe("-1");
await userEvent.click(decrement);
expect(number.value).toBe("-1.5");
});
test("Increment and decrement the value with min, max and step using the arrows in keyboard", () => {
const { getByLabelText } = render(<DxcNumberInput label="Number input label" min={5} max={20} step={5} />);
const number = getByLabelText("Number input label");
userEvent.type(number, "1");
fireEvent.keyDown(number, { keyCode: 38 });
expect(number.value).toBe("5");
fireEvent.keyDown(number, { keyCode: 38 });
expect(number.value).toBe("10");
fireEvent.keyDown(number, { keyCode: 38 });
expect(number.value).toBe("15");
fireEvent.keyDown(number, { keyCode: 38 });
expect(number.value).toBe("20");
fireEvent.keyDown(number, { keyCode: 38 });
expect(number.value).toBe("20");
fireEvent.keyDown(number, { keyCode: 40 });
expect(number.value).toBe("15");
fireEvent.keyDown(number, { keyCode: 40 });
expect(number.value).toBe("10");
fireEvent.keyDown(number, { keyCode: 40 });
expect(number.value).toBe("5");
fireEvent.keyDown(number, { keyCode: 40 });
expect(number.value).toBe("5");
});
test("Value is unchanged when using the scroll wheel in mouse in a disabled input", () => {
const { getByLabelText } = render(
<DxcNumberInput disabled label="Number input label" min={5} max={20} step={5} defaultValue={10} />
);
const number = getByLabelText("Number input label");
fireEvent.wheel(number, { deltaY: -100 });
expect(number.value).toBe("10");
fireEvent.wheel(number, { deltaY: 100 });
expect(number.value).toBe("10");
fireEvent.wheel(number, { deltaY: -100 });
expect(number.value).toBe("10");
fireEvent.wheel(number, { deltaY: 100 });
expect(number.value).toBe("10");
});
test("Value is unchanged when using the arrows in keyboard in a disabled input", () => {
const { getByLabelText } = render(
<DxcNumberInput disabled label="Number input label" min={5} max={20} step={5} defaultValue={10} />
);
const number = getByLabelText("Number input label");
fireEvent.keyDown(number, { keyCode: 38 });
expect(number.value).toBe("10");
fireEvent.keyDown(number, { keyCode: 40 });
expect(number.value).toBe("10");
fireEvent.keyDown(number, { keyCode: 38 });
expect(number.value).toBe("10");
fireEvent.keyDown(number, { keyCode: 40 });
expect(number.value).toBe("10");
});
test("Value is unchanged when using the scroll wheel in mouse in a read-only input", () => {
const { getByLabelText } = render(
<DxcNumberInput readOnly label="Number input label" min={5} max={20} step={5} defaultValue={10} />
);
const number = getByLabelText("Number input label");
fireEvent.wheel(number, { deltaY: -100 });
expect(number.value).toBe("10");
fireEvent.wheel(number, { deltaY: 100 });
expect(number.value).toBe("10");
fireEvent.wheel(number, { deltaY: -100 });
expect(number.value).toBe("10");
fireEvent.wheel(number, { deltaY: 100 });
expect(number.value).toBe("10");
});
test("Value is unchanged when using the arrows in keyboard in a read-only input", () => {
const { getByLabelText } = render(
<DxcNumberInput readOnly label="Number input label" min={5} max={20} step={5} defaultValue={10} />
);
const number = getByLabelText("Number input label");
fireEvent.keyDown(number, { keyCode: 38 });
expect(number.value).toBe("10");
fireEvent.keyDown(number, { keyCode: 40 });
expect(number.value).toBe("10");
fireEvent.keyDown(number, { keyCode: 38 });
expect(number.value).toBe("10");
fireEvent.keyDown(number, { keyCode: 40 });
expect(number.value).toBe("10");
});
test("Increment and decrement the value with min, max and step using the scroll wheel in mouse", () => {
const { getByLabelText } = render(<DxcNumberInput label="Number input label" min={5} max={20} step={5} />);
const number = getByLabelText("Number input label");
userEvent.type(number, "1");
fireEvent.wheel(number, { deltaY: -100 });
expect(number.value).toBe("5");
fireEvent.wheel(number, { deltaY: -100 });
expect(number.value).toBe("10");
fireEvent.wheel(number, { deltaY: -100 });
expect(number.value).toBe("15");
fireEvent.wheel(number, { deltaY: -100 });
expect(number.value).toBe("20");
fireEvent.wheel(number, { deltaY: -100 });
expect(number.value).toBe("20");
fireEvent.wheel(number, { deltaY: 100 });
expect(number.value).toBe("15");
fireEvent.wheel(number, { deltaY: 100 });
expect(number.value).toBe("10");
fireEvent.wheel(number, { deltaY: 100 });
expect(number.value).toBe("5");
fireEvent.wheel(number, { deltaY: 100 });
expect(number.value).toBe("5");
});
test("Number has correct accessibility attributes", () => {
const { getByLabelText, getAllByRole } = render(<DxcNumberInput label="Number input label" />);
const number = getByLabelText("Number input label");
expect(number.getAttribute("type")).toBe("number");
expect(number.getAttribute("aria-autocomplete")).toBeNull();
expect(number.getAttribute("aria-controls")).toBeNull();
expect(number.getAttribute("aria-expanded")).toBeNull();
const decrement = getAllByRole("button")[0];
expect(decrement.getAttribute("aria-label")).toBe("Decrement value");
const increment = getAllByRole("button")[1];
expect(increment.getAttribute("aria-label")).toBe("Increment value");
});
test("Number input submits correct values inside a form and actions don't trigger the submit event", async () => {
const handlerOnSubmit = jest.fn((e) => {
e.preventDefault();
const formData = new FormData(e.target);
const formProps = Object.fromEntries(formData);
expect(formProps).toStrictEqual({ data: "0" });
});
const { getByText, getAllByRole } = render(
<form onSubmit={handlerOnSubmit}>
<DxcNumberInput label="Number input label" name="data" />
<button type="submit">Submit</button>
</form>
);
const less = getAllByRole("button")[0];
const more = getAllByRole("button")[1];
const submit = getByText("Submit");
await userEvent.click(more);
expect(handlerOnSubmit).not.toHaveBeenCalled();
await userEvent.click(less);
expect(handlerOnSubmit).not.toHaveBeenCalled();
await userEvent.click(submit);
expect(handlerOnSubmit).toHaveBeenCalled();
});
});