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<?php class Swift_ByteStream_ArrayByteStreamTest extends \PHPUnit\Framework\TestCase { public function testReadingSingleBytesFromBaseInput() { $input = ['a', 'b', 'c']; $bs = $this->createArrayStream($input); $output = []; while (false !== $bytes = $bs->read(1)) { $output[] = $bytes; } $this->assertEquals($input, $output, '%s: Bytes read from stream should be the same as bytes in constructor' ); } public function testReadingMultipleBytesFromBaseInput() { $input = ['a', 'b', 'c', 'd']; $bs = $this->createArrayStream($input); $output = []; while (false !== $bytes = $bs->read(2)) { $output[] = $bytes; } $this->assertEquals(['ab', 'cd'], $output, '%s: Bytes read from stream should be in pairs' ); } public function testReadingOddOffsetOnLastByte() { $input = ['a', 'b', 'c', 'd', 'e']; $bs = $this->createArrayStream($input); $output = []; while (false !== $bytes = $bs->read(2)) { $output[] = $bytes; } $this->assertEquals(['ab', 'cd', 'e'], $output, '%s: Bytes read from stream should be in pairs except final read' ); } public function testSettingPointerPartway() { $input = ['a', 'b', 'c']; $bs = $this->createArrayStream($input); $bs->setReadPointer(1); $this->assertEquals('b', $bs->read(1), '%s: Byte should be second byte since pointer as at offset 1' ); } public function testResettingPointerAfterExhaustion() { $input = ['a', 'b', 'c']; $bs = $this->createArrayStream($input); while (false !== $bs->read(1)); $bs->setReadPointer(0); $this->assertEquals('a', $bs->read(1), '%s: Byte should be first byte since pointer as at offset 0' ); } public function testPointerNeverSetsBelowZero() { $input = ['a', 'b', 'c']; $bs = $this->createArrayStream($input); $bs->setReadPointer(-1); $this->assertEquals('a', $bs->read(1), '%s: Byte should be first byte since pointer should be at offset 0' ); } public function testPointerNeverSetsAboveStackSize() { $input = ['a', 'b', 'c']; $bs = $this->createArrayStream($input); $bs->setReadPointer(3); $this->assertFalse($bs->read(1), '%s: Stream should be at end and thus return false' ); } public function testBytesCanBeWrittenToStream() { $input = ['a', 'b', 'c']; $bs = $this->createArrayStream($input); $bs->write('de'); $output = []; while (false !== $bytes = $bs->read(1)) { $output[] = $bytes; } $this->assertEquals(['a', 'b', 'c', 'd', 'e'], $output, '%s: Bytes read from stream should be from initial stack + written' ); } public function testContentsCanBeFlushed() { $input = ['a', 'b', 'c']; $bs = $this->createArrayStream($input); $bs->flushBuffers(); $this->assertFalse($bs->read(1), '%s: Contents have been flushed so read() should return false' ); } public function testConstructorCanTakeStringArgument() { $bs = $this->createArrayStream('abc'); $output = []; while (false !== $bytes = $bs->read(1)) { $output[] = $bytes; } $this->assertEquals(['a', 'b', 'c'], $output, '%s: Bytes read from stream should be the same as bytes in constructor' ); } public function testBindingOtherStreamsMirrorsWriteOperations() { $bs = $this->createArrayStream(''); $is1 = $this->getMockBuilder('Swift_InputByteStream')->getMock(); $is2 = $this->getMockBuilder('Swift_InputByteStream')->getMock(); $is1->expects($this->at(0)) ->method('write') ->with('x'); $is1->expects($this->at(1)) ->method('write') ->with('y'); $is2->expects($this->at(0)) ->method('write') ->with('x'); $is2->expects($this->at(1)) ->method('write') ->with('y'); $bs->bind($is1); $bs->bind($is2); $bs->write('x'); $bs->write('y'); } public function testBindingOtherStreamsMirrorsFlushOperations() { $bs = $this->createArrayStream(''); $is1 = $this->getMockBuilder('Swift_InputByteStream')->getMock(); $is2 = $this->getMockBuilder('Swift_InputByteStream')->getMock(); $is1->expects($this->once()) ->method('flushBuffers'); $is2->expects($this->once()) ->method('flushBuffers'); $bs->bind($is1); $bs->bind($is2); $bs->flushBuffers(); } public function testUnbindingStreamPreventsFurtherWrites() { $bs = $this->createArrayStream(''); $is1 = $this->getMockBuilder('Swift_InputByteStream')->getMock(); $is2 = $this->getMockBuilder('Swift_InputByteStream')->getMock(); $is1->expects($this->at(0)) ->method('write') ->with('x'); $is1->expects($this->at(1)) ->method('write') ->with('y'); $is2->expects($this->once()) ->method('write') ->with('x'); $bs->bind($is1); $bs->bind($is2); $bs->write('x'); $bs->unbind($is2); $bs->write('y'); } private function createArrayStream($input) { return new Swift_ByteStream_ArrayByteStream($input); } }