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LinesOfALargeFileTestCase.php
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Wed, Feb 19, 20:56

LinesOfALargeFileTestCase.php
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<?php
/*
* Copyright 2012 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
final class LinesOfALargeFileTestCase extends ArcanistPhutilTestCase {
public function testBasics() {
$this->writeAndRead(
"abcd",
array(
"abcd",
));
}
public function testTerminalDelimiterPresent() {
$this->writeAndRead(
"bat\ncat\ndog\n",
array(
"bat",
"cat",
"dog",
));
}
public function testTerminalDelimiterAbsent() {
$this->writeAndRead(
"bat\ncat\ndog",
array(
"bat",
"cat",
"dog",
));
}
public function testChangeDelimiter() {
$this->writeAndRead(
"bat\1cat\1dog\1",
array(
"bat",
"cat",
"dog",
),
"\1");
}
public function testEmptyLines() {
$this->writeAndRead(
"\n\nbat\n",
array(
'',
'',
'bat',
));
}
public function testLargeFile() {
$line = "The quick brown fox jumps over the lazy dog.";
$n = 100;
$this->writeAndRead(
str_repeat($line."\n", $n),
array_fill(0, $n, $line));
}
public function testLongLine() {
$line = str_repeat('x', 64 * 1024);
$this->writeAndRead($line, array($line));
}
public function testReadFailure() {
$caught = null;
try {
$f = new LinesOfALargeFile('/does/not/exist.void');
$f->rewind();
} catch (FilesystemException $ex) {
$caught = $ex;
}
$this->assertEqual(true, $caught instanceof $ex);
}
private function writeAndRead($write, $read, $delimiter = "\n") {
$tmp = new TempFile();
Filesystem::writeFile($tmp, $write);
$lines = array();
$iterator = id(new LinesOfALargeFile($tmp))->setDelimiter($delimiter);
foreach ($iterator as $line) {
$lines[] = $line;
}
$this->assertEqual(
$read,
$lines,
"Write: ".phutil_utf8_shorten($write, 32));
}
}

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