Replace deprecated ReactDOM methods in tests

[ggdouglas]

Tracking work required for full compatibility with React 18. There are several tests in our test suite that reference deprecated ReactDOM.render, ReactDOM.unmountComponentAtNode and ReactDOM.findDOMNode methods. These tests should be replaced with newer infrastructure (preferably with RTL)

blueprint/packages/core/test/context-menu/contextMenuTests.tsx

Line 64 in d05a149

ReactDOM.unmountComponentAtNode(containerElement!);

blueprint/packages/core/test/forms/textAreaTests.tsx

Line 34 in d05a149

ReactDOM.unmountComponentAtNode(containerElement!);

blueprint/packages/core/test/slider/multiSliderTests.tsx

Line 50 in d05a149

ReactDOM.unmountComponentAtNode(testsContainerElement);

blueprint/packages/core/test/toast/overlayToasterTests.tsx

Line 64 in d05a149

ReactDOM.unmountComponentAtNode(toasterRenderRoot);

blueprint/packages/core/test/toast/toasterTests.tsx

Line 30 in d05a149

ReactDOM.unmountComponentAtNode(testsContainerElement);

blueprint/packages/core/test/tree/treeTests.tsx

Line 35 in d05a149

ReactDOM.unmountComponentAtNode(testsContainerElement);

blueprint/packages/datetime/test/components/dateRangeInputTests.tsx

Line 78 in d05a149

ReactDOM.unmountComponentAtNode(containerElement);

blueprint/packages/datetime/test/components/timePickerTests.tsx

Line 46 in d05a149

ReactDOM.unmountComponentAtNode(testsContainerElement);

blueprint/packages/datetime2/test/components/dateRangeInput3Tests.tsx

Line 91 in d05a149

ReactDOM.unmountComponentAtNode(containerElement);

blueprint/packages/table/test/common/internal/scrollUtilsTests.tsx

Line 342 in d05a149

return ReactDOM.render<React.HTMLProps<HTMLDivElement>>(

blueprint/packages/table/test/harness.ts

Lines 216 to 220 in d05a149

	public mount(component: React.ReactElement<any>) {
	// wrap in a root provider to avoid console warnings
	ReactDOM.render(React.createElement(BlueprintProvider, { children: component }), this.container);
	return new ElementHarness(this.container);
	}

blueprint/packages/table/test/harness.ts

Lines 222 to 224 in d05a149

	public unmount() {
	ReactDOM.unmountComponentAtNode(this.container);
	}

The ReactHarness code is used across several tests. This custom test harness should be replaced with RTL.

blueprint/packages/table/test/locatorTests.tsx

Line 58 in d05a149

ReactDOM.render(

blueprint/packages/table/test/locatorTests.tsx

Line 78 in d05a149

ReactDOM.unmountComponentAtNode(containerElement);

blueprint/packages/table/test/quadrants/tableQuadrantStackTests.tsx

Line 562 in d05a149

ReactDOM.unmountComponentAtNode(container);

blueprint/packages/table/test/quadrants/tableQuadrantStackTests.tsx

Line 718 in d05a149

const component = ReactDOM.render<any>(element, containerElement);

blueprint/packages/table/test/table2Tests.tsx

Line 64 in d05a149

ReactDOM.unmountComponentAtNode(containerElement);

blueprint/packages/table/test/table2Tests.tsx

Line 1501 in d05a149

const tableBodyNode = ReactDOM.findDOMNode(tableNode.querySelector(tableBodySelector));

[ggdouglas]

For the initial internal React 18 upgrade, these deprecations will need to be ignored to pass the linter: #7162