diff options
Diffstat (limited to 'src/features/views/logic')
| -rw-r--r-- | src/features/views/logic/panels.test.ts | 88 | ||||
| -rw-r--r-- | src/features/views/logic/panels.ts | 34 |
2 files changed, 61 insertions, 61 deletions
diff --git a/src/features/views/logic/panels.test.ts b/src/features/views/logic/panels.test.ts index edd7d9e..aadbf5e 100644 --- a/src/features/views/logic/panels.test.ts +++ b/src/features/views/logic/panels.test.ts @@ -2,54 +2,54 @@ import { describe, expect, it } from "vitest"; import { addPanel, initialPanels, removePanel, selectKind } from "./panels"; describe("view panels reducer", () => { - it("seeds one empty panel by default", () => { - const s = initialPanels(); - expect(s.panels).toHaveLength(1); - expect(s.panels[0]?.kind).toBeNull(); - }); + it("seeds one empty panel by default", () => { + const s = initialPanels(); + expect(s.panels).toHaveLength(1); + expect(s.panels[0]?.kind).toBeNull(); + }); - it("seeds a panel per provided kind, in order, with unique ids", () => { - const s = initialPanels(["surfaces", null]); - expect(s.panels.map((p) => p.kind)).toEqual(["surfaces", null]); - expect(new Set(s.panels.map((p) => p.id)).size).toBe(2); - }); + it("seeds a panel per provided kind, in order, with unique ids", () => { + const s = initialPanels(["surfaces", null]); + expect(s.panels.map((p) => p.kind)).toEqual(["surfaces", null]); + expect(new Set(s.panels.map((p) => p.id)).size).toBe(2); + }); - it("addPanel appends an empty panel with a fresh id", () => { - const seed = initialPanels(["surfaces"]); - const s = addPanel(seed); - expect(s.panels).toHaveLength(2); - expect(s.panels[1]?.kind).toBeNull(); - expect(s.panels[1]?.id).not.toBe(s.panels[0]?.id); - }); + it("addPanel appends an empty panel with a fresh id", () => { + const seed = initialPanels(["surfaces"]); + const s = addPanel(seed); + expect(s.panels).toHaveLength(2); + expect(s.panels[1]?.kind).toBeNull(); + expect(s.panels[1]?.id).not.toBe(s.panels[0]?.id); + }); - it("addPanel can seed a kind", () => { - const s = addPanel(initialPanels([null]), "surfaces"); - expect(s.panels[1]?.kind).toBe("surfaces"); - }); + it("addPanel can seed a kind", () => { + const s = addPanel(initialPanels([null]), "surfaces"); + expect(s.panels[1]?.kind).toBe("surfaces"); + }); - it("removePanel drops the matching id only", () => { - const seed = initialPanels(["surfaces", null]); - const firstId = seed.panels[0]?.id ?? -1; - const s = removePanel(seed, firstId); - expect(s.panels).toHaveLength(1); - expect(s.panels[0]?.kind).toBeNull(); - }); + it("removePanel drops the matching id only", () => { + const seed = initialPanels(["surfaces", null]); + const firstId = seed.panels[0]?.id ?? -1; + const s = removePanel(seed, firstId); + expect(s.panels).toHaveLength(1); + expect(s.panels[0]?.kind).toBeNull(); + }); - it("selectKind updates only the targeted panel", () => { - const seed = initialPanels([null, null]); - const targetId = seed.panels[1]?.id ?? -1; - const s = selectKind(seed, targetId, "surfaces"); - expect(s.panels[0]?.kind).toBeNull(); - expect(s.panels[1]?.kind).toBe("surfaces"); - }); + it("selectKind updates only the targeted panel", () => { + const seed = initialPanels([null, null]); + const targetId = seed.panels[1]?.id ?? -1; + const s = selectKind(seed, targetId, "surfaces"); + expect(s.panels[0]?.kind).toBeNull(); + expect(s.panels[1]?.kind).toBe("surfaces"); + }); - it("is pure — never mutates the input state", () => { - const seed = initialPanels(["surfaces"]); - const snapshot = JSON.stringify(seed); - const id = seed.panels[0]?.id ?? -1; - addPanel(seed); - removePanel(seed, id); - selectKind(seed, id, null); - expect(JSON.stringify(seed)).toBe(snapshot); - }); + it("is pure — never mutates the input state", () => { + const seed = initialPanels(["surfaces"]); + const snapshot = JSON.stringify(seed); + const id = seed.panels[0]?.id ?? -1; + addPanel(seed); + removePanel(seed, id); + selectKind(seed, id, null); + expect(JSON.stringify(seed)).toBe(snapshot); + }); }); diff --git a/src/features/views/logic/panels.ts b/src/features/views/logic/panels.ts index 38c28fb..fa22be6 100644 --- a/src/features/views/logic/panels.ts +++ b/src/features/views/logic/panels.ts @@ -10,14 +10,14 @@ */ export interface ViewPanel { - readonly id: number; - /** Selected view-kind id, or `null` while the panel still reads "Select a view". */ - readonly kind: string | null; + readonly id: number; + /** Selected view-kind id, or `null` while the panel still reads "Select a view". */ + readonly kind: string | null; } export interface PanelsState { - readonly panels: readonly ViewPanel[]; - readonly nextId: number; + readonly panels: readonly ViewPanel[]; + readonly nextId: number; } /** @@ -25,25 +25,25 @@ export interface PanelsState { * a single preset panel, or `[null]` for one empty "Select a view" panel. */ export function initialPanels(kinds: readonly (string | null)[] = [null]): PanelsState { - let nextId = 0; - const panels = kinds.map((kind) => ({ id: nextId++, kind })); - return { panels, nextId }; + let nextId = 0; + const panels = kinds.map((kind) => ({ id: nextId++, kind })); + return { panels, nextId }; } export function addPanel(state: PanelsState, kind: string | null = null): PanelsState { - return { - panels: [...state.panels, { id: state.nextId, kind }], - nextId: state.nextId + 1, - }; + return { + panels: [...state.panels, { id: state.nextId, kind }], + nextId: state.nextId + 1, + }; } export function removePanel(state: PanelsState, id: number): PanelsState { - return { ...state, panels: state.panels.filter((p) => p.id !== id) }; + return { ...state, panels: state.panels.filter((p) => p.id !== id) }; } export function selectKind(state: PanelsState, id: number, kind: string | null): PanelsState { - return { - ...state, - panels: state.panels.map((p) => (p.id === id ? { ...p, kind } : p)), - }; + return { + ...state, + panels: state.panels.map((p) => (p.id === id ? { ...p, kind } : p)), + }; } |
