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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /services/common/tests/unit/test_async_chain.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'services/common/tests/unit/test_async_chain.js')
-rw-r--r-- | services/common/tests/unit/test_async_chain.js | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/services/common/tests/unit/test_async_chain.js b/services/common/tests/unit/test_async_chain.js new file mode 100644 index 0000000000..3277c92f81 --- /dev/null +++ b/services/common/tests/unit/test_async_chain.js @@ -0,0 +1,40 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +const { Async } = ChromeUtils.importESModule( + "resource://services-common/async.sys.mjs" +); + +function run_test() { + _("Chain a few async methods, making sure the 'this' object is correct."); + + let methods = { + save(x, callback) { + this.x = x; + callback(x); + }, + addX(x, callback) { + callback(x + this.x); + }, + double(x, callback) { + callback(x * 2); + }, + neg(x, callback) { + callback(-x); + }, + }; + methods.chain = Async.chain; + + // ((1 + 1 + 1) * (-1) + 1) * 2 + 1 = -3 + methods.chain( + methods.save, + methods.addX, + methods.addX, + methods.neg, + methods.addX, + methods.double, + methods.addX, + methods.save + )(1); + Assert.equal(methods.x, -3); +} |