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'use strict';
const common = require('../common');
const dc = require('diagnostics_channel');
const assert = require('assert');
const channel = dc.tracingChannel('test');
const expectedError = new Error('test');
const input = { foo: 'bar' };
const thisArg = { baz: 'buz' };
function check(found) {
assert.deepStrictEqual(found, input);
}
const handlers = {
start: common.mustCall(check, 2),
end: common.mustCall(check, 2),
asyncStart: common.mustCall(check, 2),
asyncEnd: common.mustCall(check, 2),
error: common.mustCall((found) => {
check(found);
assert.deepStrictEqual(found.error, expectedError);
}, 2)
};
channel.subscribe(handlers);
channel.traceCallback(function(cb, err) {
assert.deepStrictEqual(this, thisArg);
setImmediate(cb, err);
}, 0, input, thisArg, common.mustCall((err, res) => {
assert.strictEqual(err, expectedError);
assert.strictEqual(res, undefined);
}), expectedError);
channel.tracePromise(function(value) {
assert.deepStrictEqual(this, thisArg);
return Promise.reject(value);
}, input, thisArg, expectedError).then(
common.mustNotCall(),
common.mustCall((value) => {
assert.deepStrictEqual(value, expectedError);
})
);
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