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'use strict';
// Flags: --experimental-vm-modules
const common = require('../common');
const assert = require('assert');
const { SourceTextModule, createContext } = require('vm');
async function createEmptyLinkedModule() {
const m = new SourceTextModule('');
await m.link(common.mustNotCall());
return m;
}
async function checkArgType() {
common.expectsError(() => {
new SourceTextModule();
}, {
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError
});
for (const invalidOptions of [
0, 1, null, true, 'str', () => {}, { identifier: 0 }, Symbol.iterator,
{ context: null }, { context: 'hucairz' }, { context: {} }
]) {
common.expectsError(() => {
new SourceTextModule('', invalidOptions);
}, {
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError
});
}
for (const invalidLinker of [
0, 1, undefined, null, true, 'str', {}, Symbol.iterator
]) {
await assert.rejects(async () => {
const m = new SourceTextModule('');
await m.link(invalidLinker);
}, {
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError'
});
}
}
// Check methods/properties can only be used under a specific state.
async function checkModuleState() {
await assert.rejects(async () => {
const m = new SourceTextModule('');
await m.link(common.mustNotCall());
assert.strictEqual(m.status, 'linked');
await m.link(common.mustNotCall());
}, {
code: 'ERR_VM_MODULE_ALREADY_LINKED'
});
await assert.rejects(async () => {
const m = new SourceTextModule('');
m.link(common.mustNotCall());
assert.strictEqual(m.status, 'linking');
await m.link(common.mustNotCall());
}, {
code: 'ERR_VM_MODULE_STATUS'
});
await assert.rejects(async () => {
const m = new SourceTextModule('');
await m.evaluate();
}, {
code: 'ERR_VM_MODULE_STATUS',
message: 'Module status must be one of linked, evaluated, or errored'
});
await assert.rejects(async () => {
const m = new SourceTextModule('');
await m.evaluate(false);
}, {
code: 'ERR_INVALID_ARG_TYPE',
message: 'The "options" argument must be of type Object. ' +
'Received type boolean'
});
common.expectsError(() => {
const m = new SourceTextModule('');
m.error;
}, {
code: 'ERR_VM_MODULE_STATUS',
message: 'Module status must be errored'
});
await assert.rejects(async () => {
const m = await createEmptyLinkedModule();
await m.evaluate();
m.error;
}, {
code: 'ERR_VM_MODULE_STATUS',
message: 'Module status must be errored'
});
common.expectsError(() => {
const m = new SourceTextModule('');
m.namespace;
}, {
code: 'ERR_VM_MODULE_STATUS',
message: 'Module status must not be unlinked or linking'
});
}
// Check link() fails when the returned module is not valid.
async function checkLinking() {
await assert.rejects(async () => {
const m = new SourceTextModule('import "foo";');
try {
await m.link(common.mustCall(() => ({})));
} catch (err) {
assert.strictEqual(m.status, 'errored');
throw err;
}
}, {
code: 'ERR_VM_MODULE_NOT_MODULE'
});
await assert.rejects(async () => {
const c = createContext({ a: 1 });
const foo = new SourceTextModule('', { context: c });
await foo.link(common.mustNotCall());
const bar = new SourceTextModule('import "foo";');
try {
await bar.link(common.mustCall(() => foo));
} catch (err) {
assert.strictEqual(bar.status, 'errored');
throw err;
}
}, {
code: 'ERR_VM_MODULE_DIFFERENT_CONTEXT'
});
await assert.rejects(async () => {
const erroredModule = new SourceTextModule('import "foo";');
try {
await erroredModule.link(common.mustCall(() => ({})));
} catch {
// ignored
} finally {
assert.strictEqual(erroredModule.status, 'errored');
}
const rootModule = new SourceTextModule('import "errored";');
await rootModule.link(common.mustCall(() => erroredModule));
}, {
code: 'ERR_VM_MODULE_LINKING_ERRORED'
});
}
common.expectsError(() => {
new SourceTextModule('', {
importModuleDynamically: 'hucairz'
});
}, {
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError,
message: 'The "options.importModuleDynamically"' +
' property must be of type function. Received type string'
});
// Check the JavaScript engine deals with exceptions correctly
async function checkExecution() {
await (async () => {
const m = new SourceTextModule('import { nonexistent } from "module";');
// There is no code for this exception since it is thrown by the JavaScript
// engine.
await assert.rejects(() => {
return m.link(common.mustCall(() => new SourceTextModule('')));
}, SyntaxError);
})();
await (async () => {
const m = new SourceTextModule('throw new Error();');
await m.link(common.mustNotCall());
const evaluatePromise = m.evaluate();
await evaluatePromise.catch(() => {});
assert.strictEqual(m.status, 'errored');
try {
await evaluatePromise;
} catch (err) {
assert.strictEqual(m.error, err);
return;
}
assert.fail('Missing expected exception');
})();
}
// Check for error thrown when breakOnSigint is not a boolean for evaluate()
async function checkInvalidOptionForEvaluate() {
await assert.rejects(async () => {
const m = new SourceTextModule('export const a = 1; export let b = 2');
await m.evaluate({ breakOnSigint: 'a-string' });
}, {
name: 'TypeError',
message:
'The "options.breakOnSigint" property must be of type boolean. ' +
'Received type string',
code: 'ERR_INVALID_ARG_TYPE'
});
}
const finished = common.mustCall();
(async function main() {
await checkArgType();
await checkModuleState();
await checkLinking();
await checkExecution();
await checkInvalidOptionForEvaluate();
finished();
})();
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