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tests.php
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tests.php
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<?php
/** @noinspection ThrowRawExceptionInspection */
/** legal notice: https://github.com/nitotm/efficient-language-detector/blob/main/LEGAL.md */
declare(strict_types = 1);
/** @psalm-suppress MissingFile */
include __DIR__ . "/vendor/autoload.php";
use Nitotm\Eld\LanguageData;
use Nitotm\Eld\LanguageDetector;
use Nitotm\Eld\LanguageResult;
use Nitotm\Eld\LanguageSet;
use Nitotm\EldTests\TestRunner;
if (PHP_SAPI !== 'cli') {
echo "<pre>";
}
$tests = new TestRunner();
$tests->add('Load ELD and create instance', function () {
$languageData = new LanguageData();
$languageSet = new LanguageSet($languageData);
new LanguageDetector(
languageData: $languageData,
languageSet: $languageSet,
);
}, true);
$tests->add('Simple language detection', function () {
$languageData = new LanguageData();
$languageSet = new LanguageSet($languageData);
$languageDetector = new LanguageDetector(
languageData: $languageData,
languageSet: $languageSet,
);
$result = $languageDetector->detect('Hola, cómo te llamas?');
if (!$result->isValid || $result->language !== "es") {
$result->dump();
throw new Exception("Expected: 'es'");
}
});
$tests->add('Get scores of multiple languages', function () {
$languageData = new LanguageData();
$languageSet = new LanguageSet($languageData);
$languageDetector = new LanguageDetector(
languageData: $languageData,
languageSet: $languageSet,
returnScores: true,
);
$result = $languageDetector->detect('How are you? Bien, gracias');
if (!$result->isValid || count($result->scores ?? []) < 2) {
$result->dump();
throw new Exception("Expected: >1 scores!");
}
});
$tests->add('Language detection, without minimum length', function () {
$languageData = new LanguageData();
$languageSet = new LanguageSet($languageData);
$languageDetector = new LanguageDetector(
languageData: $languageData,
languageSet: $languageSet,
minByteLength: 0,
minNgrams: 0,
);
$result = $languageDetector->detect('To');
if (!$result->isValid || $result->language !== "en") {
$result->dump();
throw new Exception("Expected: 'en'");
}
});
$tests->add('Test minimum length error', function () {
$languageData = new LanguageData();
$languageSet = new LanguageSet($languageData);
$languageDetector = new LanguageDetector(
languageData: $languageData,
languageSet: $languageSet,
minByteLength: 10,
minNgrams: 0,
);
$result = $languageDetector->detect('To');
if ($result->isValid || $result->errorMessage !== LanguageResult::TOO_SHORT) {
$result->dump();
throw new Exception("Expected: too-short error message");
}
});
$tests->add('Clean text', function () {
$languageData = new LanguageData();
$languageSet = new LanguageSet($languageData);
$languageDetector = new LanguageDetector(
languageData: $languageData,
languageSet: $languageSet,
);
$text = "https://www.google.com/\n" .
"mail@gmail.com\n" .
"google.com/search?q=search&source=hp\n" .
"12345 A12345\n";
$result = $languageDetector->cleanupText($text);
if ($result !== '') {
throw new Exception("Expected: empty string, but got " . $result);
}
});
$tests->add('Check minimum confidence', function () {
$languageData = new LanguageData();
$languageSet = new LanguageSet($languageData);
$languageDetector = new LanguageDetector(
languageData: $languageData,
languageSet: $languageSet,
checkConfidence: true,
);
$result = $languageDetector->detect('zxz zcz zvz zbz znz zmz zlz zsz zdz zkz zjz pelo');
if ($result->isValid) {
$result->dump();
throw new Exception("Expected: invalid result");
}
});
$tests->add('Create dynamicLangSubset(), and detect', function () {
$languageData = new LanguageData();
$languageSet = new LanguageSet($languageData, limitTo: ["en"]);
$languageDetector = new LanguageDetector(
languageData: $languageData,
languageSet: $languageSet,
returnScores: true,
);
$result = $languageDetector->detect('How are you? Bien, gracias');
if (!$result->isValid || count($result->scores ?? []) !== 1) {
$result->dump();
throw new Exception("Expected: 1 score!");
}
});
$tests->add('Check if langSubset() is able to save subset file', function () {
$languageData = new LanguageData();
$languageSet = new LanguageSet(
$languageData,
limitTo: ["en", "es"],
usecache: true,
);
$languageDetector = new LanguageDetector(
languageData: $languageData,
languageSet: $languageSet,
returnScores: true,
);
$languageDetector->detect('How are you? Bien, gracias');
$filename = __DIR__ . "/data/cache/en-es.php";
if (!file_exists($filename)) {
throw new Exception("Expected cachefile: " . $filename);
}
});
$tests->add("Testing accuracy: ngrams-m.php database, for big-test.txt", function () {
$path = __DIR__ . '/benchmarkdata/';
$files = [
$path . 'big-test.txt',
];
$languageData = new LanguageData();
$languageSet = new LanguageSet($languageData);
$languageDetector = new LanguageDetector(
languageData: $languageData,
languageSet: $languageSet,
cleanText: true,
minByteLength: 1,
minNgrams: 1,
);
$correct = 0;
$failed = 0;
$total = 0;
foreach ($files as $file) {
$fp = fopen($file, 'rb');
if ($fp === false) {
echo('cannot read from file ' . $file . PHP_EOL);
continue;
}
echo "- " . basename($file) . PHP_EOL;
while (($line = fgets($fp, 4096)) !== false) {
[$lang, $text] = explode("\t", $line);
$result = $languageDetector->detect($text);
if ($result->isValid && $result->language === $lang) {
$correct++;
} else {
$failed++;
}
}
fclose($fp);
$total = $correct + $failed;
}
if ($total < 60000) {
throw new Exception("ABORTED: Unable to load big-test.txt; Not an ELD error");
}
echo "TOTAL: " . $total . PHP_EOL;
$ratio = 100 / $total * $correct;
echo "RATIO: " . $ratio . " % (correct: $correct, failed: $failed)" . PHP_EOL;
if ($ratio < 90.4) { // TODO, sorry did something wrong, detection rate has dropped
throw new Exception("Accuracy too low. Expected 99.42%, but got: " . round($ratio, 4) . '%');
}
});
$tests->run();