cmux/GhosttyTabsUITests/SidebarResizeUITests.swift

import XCTest

final class SidebarResizeUITests: XCTestCase {
    override func setUp() {
        super.setUp()
        continueAfterFailure = false
    }

    func testSidebarResizerTracksCursor() {
        let app = XCUIApplication()
        app.launch()

        let elements = app.descendants(matching: .any)
        let resizer = elements["SidebarResizer"]
        XCTAssertTrue(resizer.waitForExistence(timeout: 5.0))

        let initialX = resizer.frame.minX

        let start = resizer.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5))
        let end = start.withOffset(CGVector(dx: 80, dy: 0))
        start.press(forDuration: 0.1, thenDragTo: end)

        let afterX = resizer.frame.minX
        XCTAssertEqual(afterX, initialX + 80, accuracy: 2.0)

        let startBack = resizer.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5))
        let endBack = startBack.withOffset(CGVector(dx: -120, dy: 0))
        startBack.press(forDuration: 0.1, thenDragTo: endBack)

        let afterBackX = resizer.frame.minX
        XCTAssertEqual(afterBackX, afterX - 120, accuracy: 2.0)
    }
}