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test: replaces assert.throws() with common.expectsError() #22689

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test: replaces assert.throws() with common.expectsError() #22689

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32 changes: 28 additions & 4 deletions test/parallel/test-buffer-alloc.js
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Original file line number Diff line number Diff line change
Expand Up @@ -75,16 +75,40 @@ new Buffer('', 'binary');
Buffer(0);

// try to write a 0-length string beyond the end of b
assert.throws(() => b.write('', 2048), RangeError);
common.expectsError(
() => b.write('', 2048),
{
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nit: Since this error object is used multiple times in the test, it can be stored in a const.

code: 'ERR_BUFFER_OUT_OF_BOUNDS',
type: RangeError
}
);

// throw when writing to negative offset
assert.throws(() => b.write('a', -1), RangeError);
common.expectsError(
() => b.write('a', -1),
{
code: 'ERR_BUFFER_OUT_OF_BOUNDS',
type: RangeError
}
);

// throw when writing past bounds from the pool
assert.throws(() => b.write('a', 2048), RangeError);
common.expectsError(
() => b.write('a', 2048),
{
code: 'ERR_BUFFER_OUT_OF_BOUNDS',
type: RangeError
}
);

// throw when writing to negative offset
assert.throws(() => b.write('a', -1), RangeError);
common.expectsError(
() => b.write('a', -1),
{
code: 'ERR_BUFFER_OUT_OF_BOUNDS',
type: RangeError
}
);

// try to copy 0 bytes worth of data into an empty buffer
b.copy(Buffer.alloc(0), 0, 0, 0);
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