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test: fix hijackStdout behavior in console #14647

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test: fix hijackStdout behavior in console #14647

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c45e347
test: fix hijackStdout behavior in console
XadillaX Aug 6, 2017
9dbe31b
update after reviewing
XadillaX Aug 10, 2017
0ef550c
update after reviewing
XadillaX Aug 11, 2017
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9 changes: 8 additions & 1 deletion test/common/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -801,7 +801,14 @@ function hijackStdWritable(name, listener) {

stream.writeTimes = 0;
stream.write = function(data, callback) {
listener(data);
try {
listener(data);
} catch(e) {
process.nextTick(function() {
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@refack refack Aug 9, 2017 •
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Nit: I know you like functions but this could be a single line.
IMHO the indentation is weird

throw e;
});
}

_write.call(stream, data, callback);
stream.writeTimes++;
};
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20 changes: 20 additions & 0 deletions test/parallel/test-common.js
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Expand Up @@ -108,3 +108,23 @@ const HIJACK_TEST_ARRAY = [ 'foo\n', 'bar\n', 'baz\n' ];
common[`restoreStd${txt}`]();
assert.strictEqual(originalWrite, stream.write);
});

// hijackStderr and hijackStdout again
// for console
[ 'err', 'out' ].forEach((txt) => {
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@refack refack Aug 9, 2017

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Optional: do [['err', 'error'], ['out', 'log']].forEach(([ext, method]) => {
instead of console[txt === 'err' ? 'error' : 'log']('test');

common[`hijackStd${txt}`](common.mustCall(function(data) {
assert.strictEqual(data, 'test\n');

// throw an error
throw new Error(`console ${txt} error`);
}));

console[txt === 'err' ? 'error' : 'log']('test');
common[`restoreStd${txt}`]();
});

let uncaughtTimes = 0;
process.on('uncaughtException', common.mustCallAtLeast(function(e) {
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@refack refack Aug 9, 2017 •
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CR: How is the mustCallAtLeast fit with the ${([ 'err', 'out' ])[uncaughtTimes++]} trick?

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@XadillaX XadillaX Aug 10, 2017 •
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The second parameter of common.mustCallAtLeast is 2.

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@refack refack Aug 11, 2017

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Sorry I wasn't clear. I meant it should be mustCall, as any more calls would generate console undefined error

assert.strictEqual(e instanceof Error, true);
assert.strictEqual(e.message, `console ${([ 'err', 'out' ])[uncaughtTimes++]} error`);
}, 2));