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denoland-deno/tests/testdata/run/015_duplicate_parallel_import.js
Matt Mastracci f5e46c9bf2
chore: move cli/tests/ -> tests/ (#22369)
This looks like a massive PR, but it's only a move from cli/tests ->
tests, and updates of relative paths for files.

This is the first step towards aggregate all of the integration test
files under tests/, which will lead to a set of integration tests that
can run without the CLI binary being built.

While we could leave these tests under `cli`, it would require us to
keep a more complex directory structure for the various test runners. In
addition, we have a lot of complexity to ignore various test files in
the `cli` project itself (cargo publish exclusion rules, autotests =
false, etc).

And finally, the `tests/` folder will eventually house the `test_ffi`,
`test_napi` and other testing code, reducing the size of the root repo
directory.

For easier review, the extremely large and noisy "move" is in the first
commit (with no changes -- just a move), while the remainder of the
changes to actual files is in the second commit.
2024-02-10 20:22:13 +00:00

20 lines
509 B
JavaScript

// Importing the same module in parallel, the module should only be
// instantiated once.
const promises = new Array(100)
.fill(null)
.map(() => import("../subdir/mod1.ts"));
Promise.all(promises).then((imports) => {
const mod = imports.reduce((first, cur) => {
if (typeof first !== "object") {
throw new Error("Expected an object.");
}
if (first !== cur) {
throw new Error("More than one instance of the same module.");
}
return first;
});
mod.printHello3();
});