106 lines
3.4 KiB
TypeScript
106 lines
3.4 KiB
TypeScript
import { createState } from "$states/texts.svelte";
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import { describe, expect, it } from "vitest";
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describe("texts.svelte", () => {
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describe("addText", () => {
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it("should add new text with unique ID and increment counter", () => {
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const state = createState();
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const initialLength = state.texts.length;
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const initialIds = state.texts.map((item) => item.id);
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const maxId = Math.max(...initialIds);
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const newText = "Test text";
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state.addText(newText);
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expect(state.texts).toHaveLength(initialLength + 1);
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expect(state.texts[initialLength].text).toBe(newText);
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expect(state.texts[initialLength].id).toBe(maxId + 1);
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expect(initialIds).not.toContain(state.texts[initialLength].id);
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});
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it("should not add text with empty string", () => {
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const state = createState();
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const initialLength = state.texts.length;
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state.addText("");
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expect(state.texts).toHaveLength(initialLength);
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});
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});
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describe("removeText", () => {
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it("should remove text by ID and preserve other texts", () => {
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const state = createState();
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const initialLength = state.texts.length;
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const idToRemove = state.texts[1].id;
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const otherTexts = state.texts.filter((item) => item.id !== idToRemove);
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state.removeText(idToRemove);
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expect(state.texts).toHaveLength(initialLength - 1);
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expect(state.texts.find((item) => item.id === idToRemove)).toBeUndefined();
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expect(state.texts).toStrictEqual(otherTexts);
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});
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it("should not remove text with non-existent ID", () => {
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const state = createState();
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const initialLength = state.texts.length;
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const initialTexts = [...state.texts];
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const nonExistentId = 999999;
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state.removeText(nonExistentId);
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expect(state.texts).toHaveLength(initialLength);
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expect(state.texts).toStrictEqual(initialTexts);
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});
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});
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describe("clear", () => {
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it("should clear all texts", () => {
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const state = createState();
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state.addText("Test 1");
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state.addText("Test 2");
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expect(state.texts.length).toBeGreaterThanOrEqual(2);
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state.clear();
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expect(state.texts).toHaveLength(0);
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});
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});
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describe("integration", () => {
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it("should maintain ID uniqueness after multiple operations", () => {
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const state = createState();
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const initialIds = new Set(state.texts.map((item) => item.id));
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state.addText("First");
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state.addText("Second");
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state.removeText(state.texts[0].id);
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state.addText("Third");
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const finalIds = state.texts.map((item) => item.id);
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const uniqueIds = new Set(finalIds);
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expect(finalIds.length).toBe(uniqueIds.size);
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});
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it("should handle adding and removing multiple texts", () => {
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const state = createState();
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const initialLength = state.texts.length;
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const addedIds: number[] = [];
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for (let i = 0; i < 5; i++) {
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state.addText(`Text ${i}`);
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addedIds.push(state.texts[state.texts.length - 1].id);
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}
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expect(state.texts).toHaveLength(initialLength + 5);
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state.removeText(addedIds[0]);
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state.removeText(addedIds[2]);
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state.removeText(addedIds[4]);
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expect(state.texts).toHaveLength(initialLength + 2);
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});
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});
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});
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