LAML MCP Server

import { parseLaml, parseLamlFile } from '../lamlParser'; import { writeFileSync, unlinkSync } from 'fs'; describe('LAML Parser', () => { it('should parse YAML content from markdown code block', () => { const content = ` \`\`\`yaml $meta: name: "test" version: 1.0 syntax: purpose: "test syntax" \`\`\` `; const result = parseLaml(content); expect(result.error).toBeUndefined(); expect(result.ast).not.toBeNull(); expect(result.source).toBeTruthy(); if (result.ast) { const jsObj = result.ast.toJS(); expect(jsObj.$meta.name).toBe('test'); expect(jsObj.syntax.purpose).toBe('test syntax'); } }); it('should handle invalid YAML gracefully', () => { const content = ` \`\`\`yaml invalid: [unclosed array \`\`\` `; const result = parseLaml(content); // Should not throw, might have parsing issues but return something expect(result.ast).toBeDefined(); }); it('should return error when no YAML found', () => { const content = ` Just some text without YAML `; const result = parseLaml(content); expect(result.ast).toBeNull(); expect(result.error).toBe('No YAML content found in markdown'); }); it('should return error when content has no YAML structure', () => { const content = ` Some text without colons or dashes No YAML structure here `; const result = parseLaml(content); expect(result.ast).toBeNull(); expect(result.error).toBe('No YAML content found in markdown'); }); it('should return error when content is empty', () => { const content = ''; const result = parseLaml(content); expect(result.ast).toBeNull(); expect(result.error).toBe('No YAML content found in markdown'); }); it('should handle plain YAML without markdown blocks', () => { const content = ` name: "test" value: 42 `; const result = parseLaml(content); expect(result.error).toBeUndefined(); expect(result.ast).not.toBeNull(); if (result.ast) { const jsObj = result.ast.toJS(); expect(jsObj.name).toBe('test'); expect(jsObj.value).toBe(42); } }); it('should parse anchor and alias notation', () => { const content = ` \`\`\`yaml base: &ref value: 42 derived: baseData: *ref extra: "test" \`\`\` `; const result = parseLaml(content); expect(result.error).toBeUndefined(); expect(result.ast).not.toBeNull(); if (result.ast) { const jsObj = result.ast.toJS(); expect(jsObj.derived.baseData.value).toBe(42); expect(jsObj.derived.extra).toBe('test'); } }); describe('parseLamlFile', () => { const testFilePath = './test-laml-file.mdc'; afterEach(() => { try { unlinkSync(testFilePath); } catch (e) { // File might not exist, ignore } }); it('should parse LAML file successfully', () => { const content = ` \`\`\`yaml name: "file-test" value: 123 \`\`\` `; writeFileSync(testFilePath, content); const result = parseLamlFile(testFilePath); expect(result.error).toBeUndefined(); expect(result.ast).not.toBeNull(); if (result.ast) { const jsObj = result.ast.toJS(); expect(jsObj.name).toBe('file-test'); expect(jsObj.value).toBe(123); } }); it('should handle file read errors', () => { const result = parseLamlFile('/non/existent/path/file.laml.mdc'); expect(result.ast).toBeNull(); expect(result.error).toBeDefined(); expect(result.source).toBeUndefined(); // Just check that we have an error message if (result.error) { expect(typeof result.error).toBe('string'); expect(result.error.length).toBeGreaterThan(0); } }); it('should handle permission denied errors', () => { // Test with a path that will definitely cause an error const result = parseLamlFile('/dev/null/impossible/path.laml.mdc'); expect(result.ast).toBeNull(); expect(result.error).toBeDefined(); expect(result.source).toBeUndefined(); }); }); describe('Complex data structures', () => { it('should parse simple string arrays', () => { const content = ` \`\`\`yaml items: - 'three' - 'three' - 'three' \`\`\` `; const result = parseLaml(content); expect(result.error).toBeUndefined(); expect(result.ast).not.toBeNull(); if (result.ast) { const jsObj = result.ast.toJS(); expect(jsObj.items).toEqual(['three', 'three', 'three']); } }); it('should parse arrays of objects', () => { const content = ` \`\`\`yaml items: - key: 'one' value: 1 - key: 'two' value: 2 \`\`\` `; const result = parseLaml(content); expect(result.error).toBeUndefined(); expect(result.ast).not.toBeNull(); if (result.ast) { const jsObj = result.ast.toJS(); expect(jsObj.items).toEqual([ { key: 'one', value: 1 }, { key: 'two', value: 2 } ]); } }); it('should parse inline arrays', () => { const content = ` \`\`\`yaml key: [1, 2, 3] \`\`\` `; const result = parseLaml(content); expect(result.error).toBeUndefined(); expect(result.ast).not.toBeNull(); if (result.ast) { const jsObj = result.ast.toJS(); expect(jsObj.key).toEqual([1, 2, 3]); } }); it('should parse inline objects', () => { const content = ` \`\`\`yaml key: {one: 1, two: 2} \`\`\` `; const result = parseLaml(content); expect(result.error).toBeUndefined(); expect(result.ast).not.toBeNull(); if (result.ast) { const jsObj = result.ast.toJS(); expect(jsObj.key).toEqual({ one: 1, two: 2 }); } }); it('should parse complex nested structures', () => { const content = ` \`\`\`yaml complex: arrays: - 'first' - 'second' - 'third' objects: - name: 'item1' value: 100 - name: 'item2' value: 200 inline_array: [1, 2, 3, 4, 5] inline_object: {type: 'test', active: true} nested: level1: - item: 'a' subarray: [1, 2, 3] - item: 'b' subobject: {x: 10, y: 20} \`\`\` `; const result = parseLaml(content); expect(result.error).toBeUndefined(); expect(result.ast).not.toBeNull(); if (result.ast) { const jsObj = result.ast.toJS(); expect(jsObj.complex.arrays).toEqual(['first', 'second', 'third']); expect(jsObj.complex.objects).toEqual([ { name: 'item1', value: 100 }, { name: 'item2', value: 200 } ]); expect(jsObj.complex.inline_array).toEqual([1, 2, 3, 4, 5]); expect(jsObj.complex.inline_object).toEqual({ type: 'test', active: true }); expect(jsObj.complex.nested.level1[0].subarray).toEqual([1, 2, 3]); expect(jsObj.complex.nested.level1[1].subobject).toEqual({ x: 10, y: 20 }); } }); it('should handle mixed types in arrays', () => { const content = ` \`\`\`yaml mixed: - 'string' - 42 - true - null - [1, 2, 3] - {key: 'value'} \`\`\` `; const result = parseLaml(content); expect(result.error).toBeUndefined(); expect(result.ast).not.toBeNull(); if (result.ast) { const jsObj = result.ast.toJS(); expect(jsObj.mixed).toEqual([ 'string', 42, true, null, [1, 2, 3], { key: 'value' } ]); } }); }); });