Deno test Leaking resources

Hi i currently try to get used to deno.test but Deno.readTextFile makes the test end in the following error:

error: Leaking resources:
  - A file (rid 3) was opened during the test, but not closed during the test. Close the file handle by calling `file.close()`.

error: Leaking resources:
  - A file (rid 3) was opened during the test, but not closed during the test. Close the file handle by calling `file.close()`.

My function looks like this:

export async function test() {
    try {
        const test = await Deno.readTextFile("./test.txt");
        return true
    }
    catch (err) {
        log(err);
        return false;
    }
}

export async function test() {
    try {
        const test = await Deno.readTextFile("./test.txt");
        return true
    }
    catch (err) {
        log(err);
        return false;
    }
}

Is there a way to close the file so that i don't get the error ?

4 Replies

ioB•13mo ago

could you share the actual test code you're using, it doesn't look like there's an error in this

.Literfieber•13mo ago

Deno.test(async function t() {
    const res = await collection.test()
    assertEquals(res, true)
}
)

Deno.test(async function t() {
    const res = await collection.test()
    assertEquals(res, true)
}
)

ioB•13mo ago

I cannot reproduce this on my end this is the code I'm using (derived from yours):

import { assertEquals } from "https://deno.land/std@0.196.0/assert/assert_equals.ts"

export async function test() {
  try {
    const test = await Deno.readTextFile("./test.txt");
    return true
  }
  catch (err) {
    return false;
  }
}

Deno.test(async function t() {
  const res = await test()
  assertEquals(res, true)
})

import { assertEquals } from "https://deno.land/std@0.196.0/assert/assert_equals.ts"

export async function test() {
  try {
    const test = await Deno.readTextFile("./test.txt");
    return true
  }
  catch (err) {
    return false;
  }
}

Deno.test(async function t() {
  const res = await test()
  assertEquals(res, true)
})

what version of deno are you using

.Literfieber•13mo ago

i found it it was a different function for sqlite where i forogt to close the db 😭 Thank you for your help anyways