import { describe, expect, it } from "vite-plus/test"; import {  constrainAuxiliaryPaneWidth,  constrainPrimarySidebarWidth,  deriveCenteredContentHorizontalPadding,  deriveFileInspectorPaneLayout,  deriveLayout,  deriveStableFormSheetDetent,  deriveThreadFeedInitialContentInset,  deriveWorkspacePaneLayout,  SPLIT_LAYOUT_MIN_HEIGHT,  SPLIT_LAYOUT_MIN_WIDTH,} from "./layout"; describe("deriveThreadFeedInitialContentInset", () => {  it("seeds Android scroll math with the composer overlay estimate", () => {    expect(      deriveThreadFeedInitialContentInset({        platform: "android",        usesNativeAutomaticInsets: false,        bottomContentInset: 174,      }),    ).toEqual({ bottom: 174 });  });   it("does not double native iOS insets", () => {    expect(      deriveThreadFeedInitialContentInset({        platform: "ios",        usesNativeAutomaticInsets: true,        bottomContentInset: 174,      }),    ).toBeUndefined();  });}); describe("resizable pane constraints", () => {  it("keeps a preferred sidebar width across large windows and clamps it in a narrow split view", () => {    expect(constrainPrimarySidebarWidth(430, 1_366)).toBe(430);    expect(constrainPrimarySidebarWidth(430, 744)).toBe(384);    expect(constrainPrimarySidebarWidth(100, 1_366)).toBe(280);  });   it("preserves a useful main pane while constraining a trailing pane", () => {    expect(constrainAuxiliaryPaneWidth({ preferredWidth: 440, availableWidth: 1_100 })).toBe(440);    expect(constrainAuxiliaryPaneWidth({ preferredWidth: 440, availableWidth: 900 })).toBe(340);    expect(constrainAuxiliaryPaneWidth({ preferredWidth: 100, availableWidth: 1_100 })).toBe(260);  });}); describe("deriveCenteredContentHorizontalPadding", () => {  it("keeps the minimum padding while the viewport fits the reading width", () => {    expect(      deriveCenteredContentHorizontalPadding({        viewportWidth: 744,        maxContentWidth: 960,        minimumPadding: 20,      }),    ).toBe(20);  });   it("centers only the content inside a wider full-width scroll host", () => {    expect(      deriveCenteredContentHorizontalPadding({        viewportWidth: 1_032,        maxContentWidth: 960,        minimumPadding: 20,      }),    ).toBe(56);  });   it("supports unconstrained compact content", () => {    expect(      deriveCenteredContentHorizontalPadding({        viewportWidth: 430,        maxContentWidth: null,        minimumPadding: 16,      }),    ).toBe(16);  });}); describe("deriveLayout", () => {  it.each([    { name: "small iPhone portrait", width: 375, height: 667 },    { name: "large iPhone portrait", width: 430, height: 932 },    { name: "small iPhone landscape", width: 667, height: 375 },    { name: "large iPhone landscape", width: 932, height: 430 },    { name: "short wide window", width: 1_024, height: 599 },    { name: "narrow tall window", width: 719, height: 1_024 },  ])("keeps a $name in the compact shell", ({ width, height }) => {    expect(deriveLayout({ width, height })).toEqual({      variant: "compact",      usesSplitView: false,      listPaneWidth: null,      shellPadding: 0,    });  });   it.each([    { name: "small tablet portrait", width: 744, height: 1_133 },    { name: "tablet landscape", width: 1_024, height: 768 },    { name: "large resizable window", width: 1_366, height: 1_024 },    { name: "foldable-sized window", width: 800, height: 700 },  ])("uses the split shell for a $name", ({ width, height }) => {    expect(deriveLayout({ width, height })).toMatchObject({      variant: "split",      usesSplitView: true,    });  });   it("switches only after both space requirements are met", () => {    expect(      deriveLayout({ width: SPLIT_LAYOUT_MIN_WIDTH, height: SPLIT_LAYOUT_MIN_HEIGHT }).variant,    ).toBe("split");    expect(      deriveLayout({ width: SPLIT_LAYOUT_MIN_WIDTH - 1, height: SPLIT_LAYOUT_MIN_HEIGHT }).variant,    ).toBe("compact");    expect(      deriveLayout({ width: SPLIT_LAYOUT_MIN_WIDTH, height: SPLIT_LAYOUT_MIN_HEIGHT - 1 }).variant,    ).toBe("compact");  });   it("keeps the sidebar within usable native-column bounds", () => {    expect(deriveLayout({ width: 720, height: 1_000 }).listPaneWidth).toBe(280);    expect(deriveLayout({ width: 1_024, height: 768 }).listPaneWidth).toBe(328);    expect(deriveLayout({ width: 1_600, height: 1_000 }).listPaneWidth).toBe(380);  });}); describe("deriveWorkspacePaneLayout", () => {  it("keeps the auxiliary pane out of a standard iPad detail column", () => {    const layout = deriveLayout({ width: 1_194, height: 834 });     expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 1_194,        primarySidebarPreferredVisible: true,        auxiliaryPanePreferredVisible: true,      }),    ).toEqual({      primarySidebarVisible: true,      primarySidebarSuppressedByAuxiliary: false,      contentPaneWidth: 814,      supportsAuxiliaryPane: false,      auxiliaryPaneVisible: false,      auxiliaryPaneWidth: null,    });  });   it("offers an auxiliary pane when maximizing a standard iPad landscape window", () => {    const layout = deriveLayout({ width: 1_194, height: 834 });     expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 1_194,        primarySidebarPreferredVisible: false,        auxiliaryPanePreferredVisible: true,      }),    ).toEqual({      primarySidebarVisible: false,      primarySidebarSuppressedByAuxiliary: false,      contentPaneWidth: 1_194,      supportsAuxiliaryPane: true,      auxiliaryPaneVisible: true,      auxiliaryPaneWidth: 320,    });  });   it("prioritizes a trailing file inspector over the thread sidebar at medium widths", () => {    const layout = deriveLayout({ width: 1_024, height: 1_366 });     expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 1_024,        primarySidebarPreferredVisible: true,        auxiliaryPanePreferredVisible: true,        auxiliaryPaneRole: "inspector",      }),    ).toEqual({      primarySidebarVisible: false,      primarySidebarSuppressedByAuxiliary: true,      contentPaneWidth: 1_024,      supportsAuxiliaryPane: true,      auxiliaryPaneVisible: true,      auxiliaryPaneWidth: 260,    });  });   it("keeps threads, content, and the file inspector visible in a large landscape window", () => {    const layout = deriveLayout({ width: 1_366, height: 1_024 });     expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 1_366,        primarySidebarPreferredVisible: true,        auxiliaryPanePreferredVisible: true,        auxiliaryPaneRole: "inspector",      }),    ).toEqual({      primarySidebarVisible: true,      primarySidebarSuppressedByAuxiliary: false,      contentPaneWidth: 986,      supportsAuxiliaryPane: true,      auxiliaryPaneVisible: true,      auxiliaryPaneWidth: 276,    });  });   it("keeps an explicitly hidden thread sidebar hidden when the file inspector is visible", () => {    const layout = deriveLayout({ width: 1_024, height: 1_366 });     expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 1_024,        primarySidebarPreferredVisible: false,        auxiliaryPanePreferredVisible: true,        auxiliaryPaneRole: "inspector",      }),    ).toMatchObject({      primarySidebarVisible: false,      primarySidebarSuppressedByAuxiliary: false,      auxiliaryPaneVisible: true,    });  });   it("restores the thread sidebar when the file inspector is hidden", () => {    const layout = deriveLayout({ width: 1_024, height: 1_366 });     expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 1_024,        primarySidebarPreferredVisible: true,        auxiliaryPanePreferredVisible: false,        auxiliaryPaneRole: "inspector",      }),    ).toMatchObject({      primarySidebarVisible: true,      primarySidebarSuppressedByAuxiliary: false,      auxiliaryPaneVisible: false,    });  });   it("keeps file navigation on the native stack below the inspector breakpoint", () => {    const layout = deriveLayout({ width: 744, height: 1_133 });     expect(deriveFileInspectorPaneLayout({ layout, viewportWidth: 744 })).toEqual({      supported: false,      width: null,    });    expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 744,        primarySidebarPreferredVisible: true,        auxiliaryPanePreferredVisible: true,        auxiliaryPaneRole: "inspector",      }),    ).toMatchObject({      primarySidebarVisible: true,      supportsAuxiliaryPane: false,      auxiliaryPaneVisible: false,    });  });   it("supports three visible columns in a sufficiently large window", () => {    const layout = deriveLayout({ width: 1_366, height: 1_024 });     expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 1_366,        primarySidebarPreferredVisible: true,        auxiliaryPanePreferredVisible: true,      }),    ).toMatchObject({      primarySidebarVisible: true,      contentPaneWidth: 986,      supportsAuxiliaryPane: true,      auxiliaryPaneVisible: true,      auxiliaryPaneWidth: 276,    });  });   it("uses a preferred inspector width when all three panes still fit", () => {    const layout = deriveLayout({ width: 1_366, height: 1_024 });     expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 1_366,        primarySidebarPreferredVisible: true,        auxiliaryPanePreferredVisible: true,        auxiliaryPaneRole: "inspector",        auxiliaryPanePreferredWidth: 420,      }),    ).toMatchObject({      primarySidebarVisible: true,      auxiliaryPaneVisible: true,      auxiliaryPaneWidth: 420,    });  });   it("clamps a preferred supplementary width before squeezing the main pane", () => {    const layout = deriveLayout({ width: 1_366, height: 1_024 });     expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 1_366,        primarySidebarPreferredVisible: true,        auxiliaryPanePreferredVisible: true,        auxiliaryPanePreferredWidth: 460,      }).auxiliaryPaneWidth,    ).toBe(426);  });   it("respects a hidden auxiliary-pane preference", () => {    const layout = deriveLayout({ width: 1_366, height: 1_024 });     expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 1_366,        primarySidebarPreferredVisible: true,        auxiliaryPanePreferredVisible: false,      }).auxiliaryPaneVisible,    ).toBe(false);  });   it("never exposes workspace panes in compact layouts", () => {    const layout = deriveLayout({ width: 430, height: 932 });     expect(      deriveWorkspacePaneLayout({        layout,        viewportWidth: 430,        primarySidebarPreferredVisible: true,        auxiliaryPanePreferredVisible: true,      }),    ).toMatchObject({      primarySidebarVisible: false,      supportsAuxiliaryPane: false,      auxiliaryPaneVisible: false,      auxiliaryPaneWidth: null,    });  });}); describe("deriveStableFormSheetDetent", () => {  it.each([    { height: 1_194, expected: 0.62 },    { height: 834, expected: 0.863 },    { height: 600, expected: 0.893 },    { height: 0, expected: 0.92 },  ])("derives a stable sheet detent for height $height", ({ height, expected }) => {    expect(deriveStableFormSheetDetent(height)).toBe(expected);  });});