@webscale-networks/cloudedge-handlers/execution_testing/webscale/src/index.js

Webscale Networks CloudEDGE Handlers for cloud-agnostic edge function execution

const fs = require('fs');
const path = require('path');

// Run tests that assert each handler function conforms to Webscale's handler
// interface.
function runHandlerInterfaceTests(tests, moduleName, module, func) {
    describe(moduleName + '.' + func.name, () => {
        for (const testInstance of tests) {
            test(testInstance.name, async () => {
                await testInstance.expectFunction(
                    func.type,
                    module[func.name],
                )
            });
        }
    });
};

// Runs the test found in 'tests.js' against each handler function listed in the
// handler file's manifest.json file.
describe('Webscale CloudEDGE handler interface test suite', () => {
    const rootDir = process.env['HANDLER_ROOT_DIR'];
    if (!rootDir) {
        expect(rootDir).not.toBeUndefined() ||
            expect(rootDir).not.toBeNull();
    }
    const content = fs.readFileSync(path.join(rootDir, 'manifest.json'));

    try {
        const manifest = JSON.parse(content);
        const tests = require(path.join(__dirname, 'tests.js')).tests;
        for (const metadata of manifest) {
            const module = require(path.join(rootDir, metadata.relativePath));
            for (const func of metadata.functions) {
                expect(['handleRequest', 'handleResponse', 'compute'])
                    .toContain(func.type);
                runHandlerInterfaceTests(
                    tests[func.type],
                    metadata.moduleName,
                    module,
                    func,
                );
            }
        }
    } catch(err) {
        console.error(err);
        expect(err).toBeNull();
    }
});