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test: improve test-fs-open-flags
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* use arrow funcion instead of function expression
* add second argument to method assert.throws
* check error messages from beginning to the end using ^ and $

PR-URL: nodejs#10908
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Adrian Estrada <edsadr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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vinimdocarmo authored and italoacasas committed Jan 30, 2017
1 parent 96cfd74 commit c22e051
Showing 1 changed file with 11 additions and 4 deletions.
15 changes: 11 additions & 4 deletions test/parallel/test-fs-open-flags.js
Original file line number Diff line number Diff line change
Expand Up @@ -34,20 +34,27 @@ assert.equal(stringToFlags('xa+'), O_APPEND | O_CREAT | O_RDWR | O_EXCL);
('+ +a +r +w rw wa war raw r++ a++ w++ x +x x+ rx rx+ wxx wax xwx xxx')
.split(' ')
.forEach(function(flags) {
assert.throws(function() { stringToFlags(flags); });
assert.throws(
() => stringToFlags(flags),
new RegExp(`^Error: Unknown file open flag: ${escapeRegExp(flags)}`)
);
});

assert.throws(
() => stringToFlags({}),
/Unknown file open flag: \[object Object\]/
/^Error: Unknown file open flag: \[object Object\]$/
);

assert.throws(
() => stringToFlags(true),
/Unknown file open flag: true/
/^Error: Unknown file open flag: true$/
);

assert.throws(
() => stringToFlags(null),
/Unknown file open flag: null/
/^Error: Unknown file open flag: null$/
);

function escapeRegExp(string) {
return string.replace(/[\\^$*+?.()|[\]{}]/g, '\\$&');
}

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