mozilla-central/js/xpconnect/tests/unit/test_import_es6_modules.js (file symbol)

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/* Any copyright is dedicated to the Public Domain.
add_task(async function() {
// Test basic import.
let ns = ChromeUtils.importESModule("resource://test/es6module.js");
Assert.equal(ns.loadCount, 1);
Assert.equal(ns.value, 2);
// Test re-import of the same module.
let ns2 = ChromeUtils.importESModule("resource://test/es6module.js");
Assert.equal(ns.loadCount, 1);
Assert.equal(ns, ns2);
// Test imports with absolute and relative URIs return the same thing.
let ns3 = ChromeUtils.importESModule("resource://test/es6module_absolute.js");
let ns4 = ChromeUtils.importESModule("resource://test/es6module_absolute2.js");
Assert.ok(ns3.absoluteX === ns3.relativeX);
Assert.ok(ns3.absoluteX === ns4.x);
// Test load failure.
type: "Error",
message: "Failed to load resource://test/es6module_not_found.js",
fileName: "test_import_es6_modules.js",
stack: "testFailure",
lineNumber: "*",
columnNumber: "*",
result: Cr.NS_ERROR_FILE_NOT_FOUND,
});
// Test load failure in import.
type: "Error",
message: "Failed to load resource://test/es6module_not_found2.js",
fileName: "test_import_es6_modules.js",
stack: "testFailure",
lineNumber: "*",
columnNumber: "*",
result: Cr.NS_ERROR_FILE_NOT_FOUND,
});
// Test parse error.
type: "SyntaxError",
stack: "testFailure",
lineNumber: 1,
columnNumber: 6,
});
// Test parse error in import.
type: "SyntaxError",
stack: "testFailure",
lineNumber: 1,
columnNumber: 6,
});
// Test import error.
type: "SyntaxError",
lineNumber: 1,
columnNumber: 10,
});
// Test execution failure.
let exception1 = testFailure("resource://test/es6module_throws.js", {
type: "Error",
message: "foobar",
stack: "throwFunction",
lineNumber: 2,
columnNumber: 9,
});
// Test re-import throws the same exception.
let exception2 = testFailure("resource://test/es6module_throws.js", {
type: "Error",
message: "foobar",
stack: "throwFunction",
lineNumber: 2,
columnNumber: 9,
});
Assert.ok(exception1 === exception2);
// Test loading cyclic module graph.
ns = ChromeUtils.importESModule("resource://test/es6module_cycle_a.js");
Assert.ok(ns.loaded);
Assert.equal(ns.getValueFromB(), "b");
ns = ChromeUtils.importESModule("resource://test/es6module_cycle_b.js");
Assert.ok(ns.loaded);
Assert.equal(ns.getValueFromC(), "c");
ns = ChromeUtils.importESModule("resource://test/es6module_cycle_c.js");
Assert.ok(ns.loaded);
Assert.equal(ns.getValueFromA(), "a");
// Test top-level await is not supported.
type: "SyntaxError",
message: "not supported",
stack: "testFailure",
lineNumber: 1,
columnNumber: 1,
});
});
add_task(async function testDynamicImport() {
// Dynamic import while and after evaluating top-level script.
let ns = ChromeUtils.importESModule("resource://test/es6module_dynamic_import.js");
let ns2 = await ns.result;
Assert.equal(ns2.x, 10);
ns2 = await ns.doImport();
Assert.equal(ns2.y, 20);
// Dynamic import for statically imported module.
Assert.equal(ns.callGetCounter(), 1);
ns.callSetCounter(5);
Assert.equal(ns.callGetCounter(), 5);
const { getCounter, setCounter } = await ns.doImportStatic();
Assert.equal(getCounter(), 5);
setCounter(8);
Assert.equal(getCounter(), 8);
Assert.equal(ns.callGetCounter(), 8);
// Dynamic import for missing file.
ns = ChromeUtils.importESModule("resource://test/es6module_dynamic_import_missing.js");
let e = await ns.result;
checkException(e, {
type: "TypeError",
message: "error loading dynamically imported",
lineNumber: 5,
columnNumber: 1,
});
e = await ns.doImport();
checkException(e, {
type: "TypeError",
message: "error loading dynamically imported",
lineNumber: 11,
columnNumber: 5,
});
// Syntax error in dynamic import.
ns = ChromeUtils.importESModule("resource://test/es6module_dynamic_import_syntax_error.js");
e = await ns.result;
checkException(e, {
type: "SyntaxError",
message: "unexpected token",
lineNumber: 1,
columnNumber: 3,
});
e = await ns.doImport();
checkException(e, {
type: "SyntaxError",
message: "unexpected token",
lineNumber: 1,
columnNumber: 4,
});
// Runtime error in dynamic import.
ns = ChromeUtils.importESModule("resource://test/es6module_dynamic_import_runtime_error.js");
e = await ns.result;
checkException(e, {
type: "ReferenceError",
message: "foo is not defined",
lineNumber: 2,
columnNumber: 1,
});
e = await ns.doImport();
checkException(e, {
type: "ReferenceError",
message: "bar is not defined",
lineNumber: 2,
columnNumber: 1,
});
});
function testFailure(url, expected) {
let threw = false;
let exception;
let importLine, importColumn;
try {
// Get the line/column for ChromeUtils.importESModule.
// lineNumber/columnNumber value with "*" in `expected` points the
// line/column.
let e = new Error();
importLine = e.lineNumber + 3;
importColumn = 17;
ChromeUtils.importESModule(url);
} catch (e) {
threw = true;
exception = e;
}
Assert.ok(threw, "Error should be thrown");
checkException(exception, expected, importLine, importColumn);
return exception;
}
function checkException(exception, expected, importLine, importColumn) {
if ("type" in expected) {
Assert.equal(exception.constructor.name, expected.type, "error type");
}
if ("message" in expected) {
Assert.ok(exception.message.includes(expected.message),
`Message "${exception.message}" should contain "${expected.message}"`);
}
if ("stack" in expected) {
Assert.ok(exception.stack.includes(expected.stack),
`Stack "${exception.stack}" should contain "${expected.stack}"`);
}
if ("fileName" in expected) {
Assert.ok(exception.fileName.includes(expected.fileName),
`fileName "${exception.fileName}" should contain "${expected.fileName}"`);
}
if ("lineNumber" in expected) {
let expectedLine = expected.lineNumber;
if (expectedLine === "*") {
expectedLine = importLine;
}
Assert.equal(exception.lineNumber, expectedLine, "lineNumber");
}
if ("columnNumber" in expected) {
let expectedColumn = expected.columnNumber;
if (expectedColumn === "*") {
expectedColumn = importColumn;
}
Assert.equal(exception.columnNumber, expectedColumn, "columnNumber");
}
if ("result" in expected) {
Assert.equal(exception.result, expected.result, "result");
}
}