package init

nodejs-p-limit.spec

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+%{?nodejs_find_provides_and_requires}
+%global packagename p-limit
+%global enable_tests 0
+Name:		nodejs-p-limit
+Version:	1.1.0
+Release:	1
+Summary:	Run multiple promise-returning & async functions with limited concurrency
+License:	MIT
+URL:		https://github.com/sindresorhus/p-limit
+Source0:	https://registry.npmjs.org/%{packagename}/-/%{packagename}-%{version}.tgz
+Source1:	https://raw.githubusercontent.com/sindresorhus/p-limit/v%{version}/test.js
+ExclusiveArch:	%{nodejs_arches} noarch
+BuildArch:	noarch
+BuildRequires:       	nodejs-packaging
+%if 0%{?enable_tests}
+BuildRequires:       	npm(ava)
+%endif
+%description
+Run multiple promise-returning & async functions with limited concurrency
+
+%prep
+%autosetup -n package
+cp -p %{SOURCE1} .
+
+%build
+
+%install
+mkdir -p %{buildroot}%{nodejs_sitelib}/%{packagename}
+cp -pr package.json index.js \
+	%{buildroot}%{nodejs_sitelib}/%{packagename}
+%nodejs_symlink_deps
+
+%check
+%nodejs_symlink_deps --check
+%{__nodejs} -e 'require("./")'
+%if 0%{?enable_tests}
+%{_bindir}/ava
+%else
+%{_bindir}/echo -e "\e[101m -=#=- Tests disabled -=#=- \e[0m"
+%endif
+
+%files
+%doc readme.md
+%license license
+%{nodejs_sitelib}/%{packagename}
+
+%changelog
+* Mon Aug 31 2020 wutao <wutao61@huawei.com> - 1.1.0-1
+- Package init

test.js

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+import test from 'ava';
+import delay from 'delay';
+import inRange from 'in-range';
+import timeSpan from 'time-span';
+import randomInt from 'random-int';
+import m from './';
+
+test('concurrency: 1', async t => {
+	const input = [
+		[10, 300],
+		[20, 200],
+		[30, 100]
+	];
+
+	const end = timeSpan();
+	const limit = m(1);
+	const mapper = ([val, ms]) => limit(() => delay(ms).then(() => val));
+
+	t.deepEqual(await Promise.all(input.map(mapper)), [10, 20, 30]);
+	t.true(inRange(end(), 590, 650));
+});
+
+test('concurrency: 4', async t => {
+	const concurrency = 5;
+	let running = 0;
+
+	const limit = m(concurrency);
+
+	const input = Array(100).fill(0).map(() => limit(async () => {
+		running++;
+		t.true(running <= concurrency);
+		await delay(randomInt(30, 200));
+		running--;
+	}));
+
+	await Promise.all(input);
+});