feat(ModalTopActions): top actions component for internal use

packages/core/src/components/ModalNew/ModalTopActions/ModalTopActions.module.scss

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+.actions {
+  position: absolute;
+  right: var(--spacing-large);
+  top: var(--spacing-large);
+}

packages/core/src/components/ModalNew/ModalTopActions/ModalTopActions.tsx

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+import React from "react";
+import styles from "./ModalTopActions.module.scss";
+import { ModalTopActionsButtonColor, ModalTopActionsProps } from "./ModalTopActions.types";
+import Flex from "../../Flex/Flex";
+import IconButton from "../../IconButton/IconButton";
+import { CloseSmall } from "../../Icon/Icons";
+import { ButtonColor } from "../../Button/ButtonConstants";
+
+const ModalTopActions = ({ renderAction, color, closeButtonAriaLabel, onClose }: ModalTopActionsProps) => {
+  const buttonColor: ModalTopActionsButtonColor =
+    color === "dark"
+      ? ButtonColor.ON_INVERTED_BACKGROUND
+      : color === "light"
+      ? ButtonColor.ON_PRIMARY_COLOR
+      : ButtonColor.PRIMARY;
+
+  return (
+    <Flex className={styles.actions}>
+      {/* this allows passing back to consumer the color he chose, so he won't have to define it twice */}
+      {renderAction && renderAction(buttonColor)}
+      <IconButton
+        icon={CloseSmall}
+        onClick={onClose}
+        size={IconButton.sizes.SMALL}
+        kind={IconButton.kinds.TERTIARY}
+        color={buttonColor}
+        ariaLabel={closeButtonAriaLabel}
+      />
+    </Flex>
+  );
+};
+
+export default ModalTopActions;

packages/core/src/components/ModalNew/ModalTopActions/ModalTopActions.types.ts

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+import React from "react";
+import MenuButton from "../../MenuButton/MenuButton";
+import IconButton from "../../IconButton/IconButton";
+import { ButtonColor } from "../../Button/ButtonConstants";
+
+export type ModalTopActionsColor = "light" | "dark";
+export type ModalTopActionsButtonColor =
+  | ButtonColor.PRIMARY
+  | ButtonColor.ON_PRIMARY_COLOR
+  | ButtonColor.ON_INVERTED_BACKGROUND;
+
+export interface ModalTopActionsProps {
+  renderAction?: (color?: ModalTopActionsButtonColor) => React.ReactElement<typeof MenuButton | typeof IconButton>;
+  color?: ModalTopActionsColor;
+  closeButtonAriaLabel?: string;
+  onClose?: React.MouseEventHandler<HTMLDivElement>;
+}

packages/core/src/components/ModalNew/ModalTopActions/__tests__/ModalTopActions.test.tsx

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+import React from "react";
+import { render, fireEvent, within } from "@testing-library/react";
+import ModalTopActions from "../ModalTopActions";
+import IconButton from "../../../IconButton/IconButton";
+import { Feedback as FeedbackIcon } from "../../../Icon/Icons";
+import { ButtonColor } from "../../../Button/ButtonConstants";
+import { camelCase } from "lodash-es";
+
+describe("ModalTopActions", () => {
+  const closeButtonAriaLabel = "Close modal";
+
+  it("renders the close button with the correct aria-label", () => {
+    const { getByLabelText } = render(<ModalTopActions closeButtonAriaLabel={closeButtonAriaLabel} />);
+
+    expect(getByLabelText(closeButtonAriaLabel)).toBeInTheDocument();
+  });
+
+  it("calls onClose when the close button is clicked", () => {
+    const mockOnClose = jest.fn();
+
+    const { getByLabelText } = render(
+      <ModalTopActions onClose={mockOnClose} closeButtonAriaLabel={closeButtonAriaLabel} />
+    );
+
+    fireEvent.click(getByLabelText(closeButtonAriaLabel));
+    expect(mockOnClose).toHaveBeenCalled();
+  });
+
+  it("does not fail when onClose is not provided", () => {
+    const { getByLabelText } = render(<ModalTopActions closeButtonAriaLabel={closeButtonAriaLabel} />);
+    fireEvent.click(getByLabelText(closeButtonAriaLabel));
+    expect(() => getByLabelText(closeButtonAriaLabel)).not.toThrow();
+  });
+
+  it("renders the action button using the renderAction prop", () => {
+    const renderAction = jest.fn(color => <IconButton data-testid="extra-action" icon={FeedbackIcon} color={color} />);
+    const { getByTestId } = render(<ModalTopActions renderAction={renderAction} />);
+
+    expect(within(getByTestId("extra-action")).getByTestId("icon")).toBeInTheDocument();
+  });
+
+  it("calls renderAction with correct color argument", () => {
+    const renderAction = jest.fn(color => <IconButton data-testid="extra-action" icon={FeedbackIcon} color={color} />);
+    render(<ModalTopActions color="dark" renderAction={renderAction} />);
+
+    expect(renderAction).toHaveBeenCalledWith(ButtonColor.ON_INVERTED_BACKGROUND);
+  });
+
+  it("applies the correct color when 'dark' is passed", () => {
+    const { getByLabelText } = render(<ModalTopActions color="dark" closeButtonAriaLabel={closeButtonAriaLabel} />);
+    expect(getByLabelText(closeButtonAriaLabel)).toHaveClass(camelCase("color-" + ButtonColor.ON_INVERTED_BACKGROUND));
+  });
+
+  it("applies the correct color when 'light' is passed", () => {
+    const { getByLabelText } = render(<ModalTopActions color="light" closeButtonAriaLabel={closeButtonAriaLabel} />);
+    expect(getByLabelText(closeButtonAriaLabel)).toHaveClass(camelCase("color-" + ButtonColor.ON_PRIMARY_COLOR));
+  });
+
+  it("applies the default color when no color is passed", () => {
+    const { getByLabelText } = render(<ModalTopActions closeButtonAriaLabel={closeButtonAriaLabel} />);
+    expect(getByLabelText(closeButtonAriaLabel)).toHaveClass(camelCase("color-" + ButtonColor.PRIMARY));
+  });
+});