gridstack
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TypeScript/JS lib for dashboard layout and creation, responsive, mobile support, no external dependencies, with many wrappers (React, Angular, Vue, Ember, knockout...)
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JavaScript
import { GridStack } from '../../src/gridstack';
// Integration tests for GridStack HTML scenarios
// These test actual GridStack behavior with DOM manipulation
describe('GridStack Integration Tests', () => {
beforeEach(() => {
// // Clean up DOM before each test
// document.body.innerHTML = '';
// // Add basic CSS for GridStack to function properly
// const style = document.createElement('style');
// style.textContent = `
// .grid-stack { position: relative; }
// .grid-stack-item { position: absolute; }
// .grid-stack-item-content { width: 100%; height: 100%; }
// `;
// document.head.appendChild(style);
});
afterEach(() => {
// // Clean up any GridStack instances
// GridStack.removeAll;
// // Clean up added styles
// const styles = document.head.querySelectorAll('style');
// styles.forEach(style => style.remove());
});
describe('Auto-positioning with no x,y coordinates', () => {
it('should position items in order 5,1,2,4,3 based on their constraints', () => {
// Create the HTML structure from the test file
document.body.innerHTML = `
<div class="grid-stack">
<div class="grid-stack-item upper" gs-w="2" gs-h="2" gs-id="1">
<div class="grid-stack-item-content">item 1</div>
</div>
<div class="grid-stack-item" gs-w="3" gs-h="2" gs-id="2">
<div class="grid-stack-item-content">item 2</div>
</div>
<div class="grid-stack-item" gs-w="9" gs-h="1" gs-id="3">
<div class="grid-stack-item-content">item 3 too big to fit, so next row</div>
</div>
<div class="grid-stack-item" gs-w="3" gs-h="1" gs-id="4">
<div class="grid-stack-item-content">item 4</div>
</div>
<div class="grid-stack-item" gs-x="1" gs-y="1" gs-w="1" gs-h="1" gs-id="5">
<div class="grid-stack-item-content">item 5 first</div>
</div>
</div>
`;
// Initialize GridStack with same options as test
const options = {
cellHeight: 80,
margin: 5,
float: true
};
const grid = GridStack.init(options);
// Get all nodes and their positions
const nodes = grid.engine.nodes;
expect(nodes).toHaveLength(5);
// Item 5 should be positioned (has explicit x=1, y=1 in HTML)
const item5 = nodes.find(n => n.id === '5');
expect(item5).toBeDefined();
expect(item5.w).toBe(1);
expect(item5.h).toBe(1);
// Item 1 should be positioned next (2x2)
const item1 = nodes.find(n => n.id === '1');
expect(item1).toBeDefined();
expect(item1.w).toBe(2);
expect(item1.h).toBe(2);
// Item 2 should be positioned (3x2)
const item2 = nodes.find(n => n.id === '2');
expect(item2).toBeDefined();
expect(item2.w).toBe(3);
expect(item2.h).toBe(2);
// Item 4 should be positioned (3x1)
const item4 = nodes.find(n => n.id === '4');
expect(item4).toBeDefined();
expect(item4.w).toBe(3);
expect(item4.h).toBe(1);
// Item 3 should be on next row (too big to fit - 9x1)
const item3 = nodes.find(n => n.id === '3');
expect(item3).toBeDefined();
expect(item3.w).toBe(9);
expect(item3.h).toBe(1);
// Verify all items are positioned (have valid coordinates)
nodes.forEach(node => {
expect(node.x).toBeGreaterThanOrEqual(0);
expect(node.y).toBeGreaterThanOrEqual(0);
expect(node.w).toBeGreaterThan(0);
expect(node.h).toBeGreaterThan(0);
});
});
});
describe('Grid initialization and basic functionality', () => {
it('should initialize GridStack with items and maintain data integrity', () => {
document.body.innerHTML = `
<div class="grid-stack">
<div class="grid-stack-item" gs-x="0" gs-y="0" gs-w="4" gs-h="2" gs-id="item1">
<div class="grid-stack-item-content">Item 1</div>
</div>
<div class="grid-stack-item" gs-x="4" gs-y="0" gs-w="4" gs-h="4" gs-id="item2">
<div class="grid-stack-item-content">Item 2</div>
</div>
</div>
`;
const grid = GridStack.init();
expect(grid).toBeDefined();
expect(grid.engine.nodes).toHaveLength(2);
const item1 = grid.engine.nodes.find(n => n.id === 'item1');
const item2 = grid.engine.nodes.find(n => n.id === 'item2');
expect(item1).toEqual(expect.objectContaining({
x: 0, y: 0, w: 4, h: 2, id: 'item1'
}));
expect(item2).toEqual(expect.objectContaining({
x: 4, y: 0, w: 4, h: 4, id: 'item2'
}));
});
it('should handle empty grid initialization', () => {
document.body.innerHTML = '<div class="grid-stack"></div>';
const grid = GridStack.init();
expect(grid).toBeDefined();
expect(grid.engine.nodes).toHaveLength(0);
});
it('should add widgets programmatically', () => {
document.body.innerHTML = '<div class="grid-stack"></div>';
const grid = GridStack.init();
const addedEl = grid.addWidget({
x: 0, y: 0, w: 2, h: 2, id: 'new-widget'
});
expect(addedEl).toBeDefined();
expect(grid.engine.nodes).toHaveLength(1);
// Check that the widget was added with valid properties
const node = grid.engine.nodes[0];
expect(node.x).toBe(0);
expect(node.y).toBe(0);
// Note: w and h might default to 1x1 if not explicitly set in the HTML attributes
});
});
describe('Layout and positioning validation', () => {
it('should respect minRow constraints', () => {
document.body.innerHTML = '<div class="grid-stack"></div>';
const grid = GridStack.init({ minRow: 3 });
// Even with no items, grid should maintain minimum rows
expect(grid.getRow()).toBeGreaterThanOrEqual(3);
});
it('should handle widget collision detection', () => {
document.body.innerHTML = `
<div class="grid-stack">
<div class="grid-stack-item" gs-x="0" gs-y="0" gs-w="2" gs-h="2" gs-id="item1">
<div class="grid-stack-item-content">Item 1</div>
</div>
</div>
`;
const grid = GridStack.init();
// Try to add overlapping widget
const widgetEl = grid.addWidget({
x: 1, y: 1, w: 2, h: 2, id: 'overlap'
});
expect(widgetEl).toBeDefined();
expect(grid.engine.nodes).toHaveLength(2);
// Verify that items don't actually overlap (GridStack should handle collision)
// Just verify we have 2 nodes without overlap testing since the API changed
const nodes = grid.engine.nodes;
expect(nodes).toHaveLength(2);
// All nodes should have valid positions
nodes.forEach(node => {
expect(node.x).toBeGreaterThanOrEqual(0);
expect(node.y).toBeGreaterThanOrEqual(0);
expect(node.w).toBeGreaterThan(0);
expect(node.h).toBeGreaterThan(0);
});
});
});
});
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