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import { describe, expect, it } from "vitest";
import { findItemInLayout, moveItemInLayout, removeItemInLayout } from "../array";
describe("findItemInLayout", () => {
it("should find the correct location of an item", () => {
const layout = [
[["item1"], ["item2"]],
[["item3"], ["item4"]],
];
const item = "item3";
const expectedLocation = { page: 1, column: 0, section: 0 };
const location = findItemInLayout(item, layout);
expect(location).toEqual(expectedLocation);
});
it("should return null if the item is not found", () => {
const layout = [
[["item1"], ["item2"]],
[["item3"], ["item4"]],
];
const item = "item5";
const location = findItemInLayout(item, layout);
expect(location).toBeNull();
});
});
describe("removeItemInLayout", () => {
it("should remove the item and return its location", () => {
const layout = [
[["item1"], ["item2"]],
[["item3"], ["item4"]],
];
const item = "item3";
const expectedLocation = { page: 1, column: 0, section: 0 };
const location = removeItemInLayout(item, layout);
expect(location).toEqual(expectedLocation);
expect(layout[1][0]).not.toContain(item);
});
it("should return null and not modify layout if the item is not found", () => {
const layout = [
[["item1"], ["item2"]],
[["item3"], ["item4"]],
];
const item = "item5";
const location = removeItemInLayout(item, layout);
expect(location).toBeNull();
expect(layout).toEqual([
[["item1"], ["item2"]],
[["item3"], ["item4"]],
]);
});
});
describe("moveItemInLayout", () => {
it("should move an item from the current location to the target location", () => {
const layout = [
[["item1"], ["item2"]],
[["item3"], ["item4"]],
];
const current = { page: 0, column: 1, section: 0 };
const target = { page: 1, column: 0, section: 1 };
const expectedLayout = [
[["item1"], []],
[["item3", "item2"], ["item4"]],
];
const newLayout = moveItemInLayout(current, target, layout);
expect(newLayout).toEqual(expectedLayout);
});
it("should not mutate the original layout array", () => {
const layout = [
[["item1"], ["item2"]],
[["item3"], ["item4"]],
];
const layoutCopy = JSON.parse(JSON.stringify(layout));
const current = { page: 0, column: 1, section: 0 };
const target = { page: 1, column: 0, section: 1 };
moveItemInLayout(current, target, layout);
expect(layout).toEqual(layoutCopy);
});
it("should handle the case where the current and target locations are the same", () => {
const layout = [
[["item1"], ["item2"]],
[["item3"], ["item4"]],
];
const current = { page: 1, column: 0, section: 0 };
const target = { page: 1, column: 0, section: 0 };
const newLayout = moveItemInLayout(current, target, layout);
expect(newLayout).toEqual(layout);
});
it("moves an item to the specified target location", () => {
const layout = [
[["A", "B"], ["C"]],
[["D"], ["E", "F"]],
];
const current = { page: 0, column: 0, section: 1 };
const target = { page: 1, column: 1, section: 1 };
const result = moveItemInLayout(current, target, layout);
expect(result).toEqual([
[["A"], ["C"]],
[["D"], ["E", "B", "F"]],
]);
});
it("handles moving an item within the same column", () => {
const layout = [[["A", "B"]], [["C", "D"]]];
const current = { page: 0, column: 0, section: 0 };
const target = { page: 0, column: 0, section: 1 };
const result = moveItemInLayout(current, target, layout);
expect(result).toEqual([[["B", "A"]], [["C", "D"]]]);
});
it("handles moving an item to the beginning of a column", () => {
const layout = [[["A"], ["B", "C"]], [["D"]]];
const current = { page: 1, column: 0, section: 0 };
const target = { page: 0, column: 1, section: 0 };
const result = moveItemInLayout(current, target, layout);
expect(result).toEqual([[["A"], ["D", "B", "C"]], [[]]]);
});
it("handles moving an item to an empty column", () => {
const layout = [[["A"], []], [["B"]]];
const current = { page: 0, column: 0, section: 0 };
const target = { page: 0, column: 1, section: 0 };
const result = moveItemInLayout(current, target, layout);
expect(result).toEqual([[[], ["A"]], [["B"]]]);
});
it("returns the same layout if the current location is invalid", () => {
const layout = [[["A"], ["B"]]];
const current = { page: 2, column: 0, section: 0 };
const target = { page: 0, column: 1, section: 0 };
const result = moveItemInLayout(current, target, layout);
expect(result).toEqual(layout);
});
it("returns the same layout if the target location is invalid", () => {
const layout = [[["A"], ["B"]]];
const current = { page: 0, column: 0, section: 0 };
const target = { page: 2, column: 0, section: 0 };
const result = moveItemInLayout(current, target, layout);
expect(result).toEqual(layout);
});
});
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