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<?php
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
require_once('test_helper.php');
class FloatIntEncodingTest extends PHPUnit_Framework_TestCase
{
const FLOAT_TYPE = 'float';
const DOUBLE_TYPE = 'double';
static $FLOAT_NAN;
static $FLOAT_POS_INF;
static $FLOAT_NEG_INF;
static $DOUBLE_NAN;
static $DOUBLE_POS_INF;
static $DOUBLE_NEG_INF;
static $LONG_BITS_NAN;
static $LONG_BITS_POS_INF;
static $LONG_BITS_NEG_INF;
static $INT_BITS_NAN;
static $INT_BITS_POS_INF;
static $INT_BITS_NEG_INF;
static function make_special_vals()
{
self::$DOUBLE_NAN = (double) NAN;
self::$DOUBLE_POS_INF = (double) INF;
self::$DOUBLE_NEG_INF = (double) -INF;
self::$FLOAT_NAN = (float) NAN;
self::$FLOAT_POS_INF = (float) INF;
self::$FLOAT_NEG_INF = (float) -INF;
self::$LONG_BITS_NAN = strrev(pack('H*', '7ff8000000000000'));
self::$LONG_BITS_POS_INF = strrev(pack('H*', '7ff0000000000000'));
self::$LONG_BITS_NEG_INF = strrev(pack('H*', 'fff0000000000000'));
self::$INT_BITS_NAN = strrev(pack('H*', '7fc00000'));
self::$INT_BITS_POS_INF = strrev(pack('H*', '7f800000'));
self::$INT_BITS_NEG_INF = strrev(pack('H*', 'ff800000'));
}
function setUp()
{
self::make_special_vals();
}
function test_special_values()
{
$this->assertTrue(is_float(self::$FLOAT_NAN), 'float NaN is a float');
$this->assertTrue(is_nan(self::$FLOAT_NAN), 'float NaN is NaN');
$this->assertFalse(is_infinite(self::$FLOAT_NAN), 'float NaN is not infinite');
$this->assertTrue(is_float(self::$FLOAT_POS_INF), 'float pos infinity is a float');
$this->assertTrue(is_infinite(self::$FLOAT_POS_INF), 'float pos infinity is infinite');
$this->assertTrue(0 < self::$FLOAT_POS_INF, 'float pos infinity is greater than 0');
$this->assertFalse(is_nan(self::$FLOAT_POS_INF), 'float pos infinity is not NaN');
$this->assertTrue(is_float(self::$FLOAT_NEG_INF), 'float neg infinity is a float');
$this->assertTrue(is_infinite(self::$FLOAT_NEG_INF), 'float neg infinity is infinite');
$this->assertTrue(0 > self::$FLOAT_NEG_INF, 'float neg infinity is less than 0');
$this->assertFalse(is_nan(self::$FLOAT_NEG_INF), 'float neg infinity is not NaN');
$this->assertTrue(is_double(self::$DOUBLE_NAN), 'double NaN is a double');
$this->assertTrue(is_nan(self::$DOUBLE_NAN), 'double NaN is NaN');
$this->assertFalse(is_infinite(self::$DOUBLE_NAN), 'double NaN is not infinite');
$this->assertTrue(is_double(self::$DOUBLE_POS_INF), 'double pos infinity is a double');
$this->assertTrue(is_infinite(self::$DOUBLE_POS_INF), 'double pos infinity is infinite');
$this->assertTrue(0 < self::$DOUBLE_POS_INF, 'double pos infinity is greater than 0');
$this->assertFalse(is_nan(self::$DOUBLE_POS_INF), 'double pos infinity is not NaN');
$this->assertTrue(is_double(self::$DOUBLE_NEG_INF), 'double neg infinity is a double');
$this->assertTrue(is_infinite(self::$DOUBLE_NEG_INF), 'double neg infinity is infinite');
$this->assertTrue(0 > self::$DOUBLE_NEG_INF, 'double neg infinity is less than 0');
$this->assertFalse(is_nan(self::$DOUBLE_NEG_INF), 'double neg infinity is not NaN');
}
function special_vals_provider()
{
self::make_special_vals();
return array(array(self::DOUBLE_TYPE, self::$DOUBLE_POS_INF, self::$LONG_BITS_POS_INF),
array(self::DOUBLE_TYPE, self::$DOUBLE_NEG_INF, self::$LONG_BITS_NEG_INF),
array(self::FLOAT_TYPE, self::$FLOAT_POS_INF, self::$INT_BITS_POS_INF),
array(self::FLOAT_TYPE, self::$FLOAT_NEG_INF, self::$INT_BITS_NEG_INF));
}
/**
* @dataProvider special_vals_provider
*/
function test_encoding_special_values($type, $val, $bits)
{
$this->assert_encode_values($type, $val, $bits);
}
function nan_vals_provider()
{
self::make_special_vals();
return array(array(self::DOUBLE_TYPE, self::$DOUBLE_NAN, self::$LONG_BITS_NAN),
array(self::FLOAT_TYPE, self::$FLOAT_NAN, self::$INT_BITS_NAN));
}
/**
* @dataProvider nan_vals_provider
*/
function test_encoding_nan_values($type, $val, $bits)
{
$this->assert_encode_nan_values($type, $val, $bits);
}
function normal_vals_provider()
{
$ruby_to_generate_vals =<<<_RUBY
def d2lb(d); [d].pack('E') end
dary = (-10..10).to_a + [-1234.2132, -211e23]
dary.each {|x| b = d2lb(x); puts %/array(self::DOUBLE_TYPE, (double) #{x}, #{b.inspect}, '#{b.unpack('h*')[0]}'),/}
def f2ib(f); [f].pack('e') end
fary = (-10..10).to_a + [-1234.5, -211.3e6]
fary.each {|x| b = f2ib(x); puts %/array(self::FLOAT_TYPE, (float) #{x}, #{b.inspect}, '#{b.unpack('h*')[0]}'),/}
_RUBY;
return array(
array(self::DOUBLE_TYPE, (double) -10, "\000\000\000\000\000\000$\300", '000000000000420c'),
array(self::DOUBLE_TYPE, (double) -9, "\000\000\000\000\000\000\"\300", '000000000000220c'),
array(self::DOUBLE_TYPE, (double) -8, "\000\000\000\000\000\000 \300", '000000000000020c'),
array(self::DOUBLE_TYPE, (double) -7, "\000\000\000\000\000\000\034\300", '000000000000c10c'),
array(self::DOUBLE_TYPE, (double) -6, "\000\000\000\000\000\000\030\300", '000000000000810c'),
array(self::DOUBLE_TYPE, (double) -5, "\000\000\000\000\000\000\024\300", '000000000000410c'),
array(self::DOUBLE_TYPE, (double) -4, "\000\000\000\000\000\000\020\300", '000000000000010c'),
/**/ array(self::DOUBLE_TYPE, (double) -3, "\000\000\000\000\000\000\010\300", '000000000000800c'),
array(self::DOUBLE_TYPE, (double) -2, "\000\000\000\000\000\000\000\300", '000000000000000c'),
array(self::DOUBLE_TYPE, (double) -1, "\000\000\000\000\000\000\360\277", '0000000000000ffb'),
array(self::DOUBLE_TYPE, (double) 0, "\000\000\000\000\000\000\000\000", '0000000000000000'),
array(self::DOUBLE_TYPE, (double) 1, "\000\000\000\000\000\000\360?", '0000000000000ff3'),
array(self::DOUBLE_TYPE, (double) 2, "\000\000\000\000\000\000\000@", '0000000000000004'),
/**/ array(self::DOUBLE_TYPE, (double) 3, "\000\000\000\000\000\000\010@", '0000000000008004'),
array(self::DOUBLE_TYPE, (double) 4, "\000\000\000\000\000\000\020@", '0000000000000104'),
array(self::DOUBLE_TYPE, (double) 5, "\000\000\000\000\000\000\024@", '0000000000004104'),
array(self::DOUBLE_TYPE, (double) 6, "\000\000\000\000\000\000\030@", '0000000000008104'),
array(self::DOUBLE_TYPE, (double) 7, "\000\000\000\000\000\000\034@", '000000000000c104'),
array(self::DOUBLE_TYPE, (double) 8, "\000\000\000\000\000\000 @", '0000000000000204'),
array(self::DOUBLE_TYPE, (double) 9, "\000\000\000\000\000\000\"@", '0000000000002204'),
array(self::DOUBLE_TYPE, (double) 10, "\000\000\000\000\000\000$@", '0000000000004204'),
/**/ array(self::DOUBLE_TYPE, (double) -1234.2132, "\007\316\031Q\332H\223\300", '70ec9115ad84390c'),
array(self::DOUBLE_TYPE, (double) -2.11e+25, "\311\260\276J\031t1\305", '9c0beba49147135c'),
array(self::FLOAT_TYPE, (float) -10, "\000\000 \301", '0000021c'),
array(self::FLOAT_TYPE, (float) -9, "\000\000\020\301", '0000011c'),
array(self::FLOAT_TYPE, (float) -8, "\000\000\000\301", '0000001c'),
array(self::FLOAT_TYPE, (float) -7, "\000\000\340\300", '00000e0c'),
array(self::FLOAT_TYPE, (float) -6, "\000\000\300\300", '00000c0c'),
array(self::FLOAT_TYPE, (float) -5, "\000\000\240\300", '00000a0c'),
array(self::FLOAT_TYPE, (float) -4, "\000\000\200\300", '0000080c'),
array(self::FLOAT_TYPE, (float) -3, "\000\000@\300", '0000040c'),
array(self::FLOAT_TYPE, (float) -2, "\000\000\000\300", '0000000c'),
array(self::FLOAT_TYPE, (float) -1, "\000\000\200\277", '000008fb'),
array(self::FLOAT_TYPE, (float) 0, "\000\000\000\000", '00000000'),
array(self::FLOAT_TYPE, (float) 1, "\000\000\200?", '000008f3'),
array(self::FLOAT_TYPE, (float) 2, "\000\000\000@", '00000004'),
array(self::FLOAT_TYPE, (float) 3, "\000\000@@", '00000404'),
array(self::FLOAT_TYPE, (float) 4, "\000\000\200@", '00000804'),
array(self::FLOAT_TYPE, (float) 5, "\000\000\240@", '00000a04'),
array(self::FLOAT_TYPE, (float) 6, "\000\000\300@", '00000c04'),
array(self::FLOAT_TYPE, (float) 7, "\000\000\340@", '00000e04'),
array(self::FLOAT_TYPE, (float) 8, "\000\000\000A", '00000014'),
array(self::FLOAT_TYPE, (float) 9, "\000\000\020A", '00000114'),
array(self::FLOAT_TYPE, (float) 10, "\000\000 A", '00000214'),
array(self::FLOAT_TYPE, (float) -1234.5, "\000P\232\304", '0005a94c'),
array(self::FLOAT_TYPE, (float) -211300000.0, "\352\202I\315", 'ae2894dc'),
);
}
function float_vals_provider()
{
$ary = array();
foreach ($this->normal_vals_provider() as $values)
if (self::FLOAT_TYPE == $values[0])
$ary []= array($values[0], $values[1], $values[2]);
return $ary;
}
function double_vals_provider()
{
$ary = array();
foreach ($this->normal_vals_provider() as $values)
if (self::DOUBLE_TYPE == $values[0])
$ary []= array($values[0], $values[1], $values[2]);
return $ary;
}
/**
* @dataProvider float_vals_provider
*/
function test_encoding_float_values($type, $val, $bits)
{
$this->assert_encode_values($type, $val, $bits);
}
/**
* @dataProvider double_vals_provider
*/
function test_encoding_double_values($type, $val, $bits)
{
$this->assert_encode_values($type, $val, $bits);
}
function assert_encode_values($type, $val, $bits)
{
if (self::FLOAT_TYPE == $type)
{
$decoder = array('AvroIOBinaryDecoder', 'int_bits_to_float');
$encoder = array('AvroIOBinaryEncoder', 'float_to_int_bits');
}
else
{
$decoder = array('AvroIOBinaryDecoder', 'long_bits_to_double');
$encoder = array('AvroIOBinaryEncoder', 'double_to_long_bits');
}
$decoded_bits_val = call_user_func($decoder, $bits);
$this->assertEquals($val, $decoded_bits_val,
sprintf("%s\n expected: '%f'\n given: '%f'",
'DECODED BITS', $val, $decoded_bits_val));
$encoded_val_bits = call_user_func($encoder, $val);
$this->assertEquals($bits, $encoded_val_bits,
sprintf("%s\n expected: '%s'\n given: '%s'",
'ENCODED VAL',
AvroDebug::hex_string($bits),
AvroDebug::hex_string($encoded_val_bits)));
$round_trip_value = call_user_func($decoder, $encoded_val_bits);
$this->assertEquals($val, $round_trip_value,
sprintf("%s\n expected: '%f'\n given: '%f'",
'ROUND TRIP BITS', $val, $round_trip_value));
}
function assert_encode_nan_values($type, $val, $bits)
{
if (self::FLOAT_TYPE == $type)
{
$decoder = array('AvroIOBinaryDecoder', 'int_bits_to_float');
$encoder = array('AvroIOBinaryEncoder', 'float_to_int_bits');
}
else
{
$decoder = array('AvroIOBinaryDecoder', 'long_bits_to_double');
$encoder = array('AvroIOBinaryEncoder', 'double_to_long_bits');
}
$decoded_bits_val = call_user_func($decoder, $bits);
$this->assertTrue(is_nan($decoded_bits_val),
sprintf("%s\n expected: '%f'\n given: '%f'",
'DECODED BITS', $val, $decoded_bits_val));
$encoded_val_bits = call_user_func($encoder, $val);
$this->assertEquals($bits, $encoded_val_bits,
sprintf("%s\n expected: '%s'\n given: '%s'",
'ENCODED VAL',
AvroDebug::hex_string($bits),
AvroDebug::hex_string($encoded_val_bits)));
$round_trip_value = call_user_func($decoder, $encoded_val_bits);
$this->assertTrue(is_nan($round_trip_value),
sprintf("%s\n expected: '%f'\n given: '%f'",
'ROUND TRIP BITS', $val, $round_trip_value));
}
}
|
