Started StringInputStream tests.

2 files changed, 336 insertions, 1 deletions

diff --git a/src/HTML5/Parser/StringInputStream.php b/src/HTML5/Parser/StringInputStream.php
index e26bb38..edd0399 100644
--- a/src/HTML5/Parser/StringInputStream.php
+++ b/src/HTML5/Parser/StringInputStream.php
@@ -206,7 +206,6 @@ class StringInputStream implements InputStream {
     }
   }
 
-
   /**
    * Returns the current line that the tokenizer is at.
    */
diff --git a/test/HTML5/Parser/StringInputStream.php b/test/HTML5/Parser/StringInputStream.php
new file mode 100644
index 0000000..8e2b115
--- /dev/null
+++ b/test/HTML5/Parser/StringInputStream.php
@@ -0,0 +1,336 @@
+<?php
+namespace HTML5\Tests;
+
+use \HTML5\Parser\StringInputStream;
+
+require_once __DIR__ . '/../TestCase.php';
+
+class InputStreamTest extends \HTML5\Tests\TestCase {
+
+  /**
+   * A canary test to make sure the basics are setup and working.
+   */
+  public function testConstruct() {
+    $s = new StringInputStream("abc");
+
+    $this->assertInstanceOf('\HTML5\Parser\StringInputStream', $s);
+  }
+
+  public function testNext() {
+    $s = new StringInputStream("abc");
+
+    $s->next();
+    $this->assertEquals('b', $s->current());
+    $s->next();
+    $this->assertEquals('c', $s->current());
+  }
+
+  public function testKey() {
+    $s = new StringInputStream("abc");
+
+    $this->assertEquals(0, $s->key());
+
+    $s->next();
+    $this->assertEquals(1, $s->key());
+  }
+
+  public function testPeek() {
+    $s = new StringInputStream("abc");
+
+    $this->assertEquals('b', $s->peek());
+
+    $s->next();
+    $this->assertEquals('c', $s->peek());
+  }
+
+  public function testCurrent() {
+    $s = new StringInputStream("abc");
+
+    // Before scanning the string begins the current is empty.
+    $this->assertEquals('a', $s->current());
+
+    $s->next();
+    $this->assertEquals('b', $s->current());
+
+    // Test movement through the string.
+    $s->next();
+    $this->assertEquals('c', $s->current());
+  }
+
+  public function testColumnOffset() {
+    $s = new StringInputStream("abc\ndef\n");
+    $this->assertEquals(0, $s->columnOffset());
+    $s->next();
+    $this->assertEquals(1, $s->columnOffset());
+    $s->next();
+    $this->assertEquals(2, $s->columnOffset());
+    $s->next();
+    $this->assertEquals(3, $s->columnOffset());
+    $s->next(); // LF
+    $this->assertEquals(0, $s->columnOffset());
+    $s->next();
+    $canary = $s->current(); // e
+    $this->assertEquals('e', $canary);
+    $this->assertEquals(1, $s->columnOffset());
+
+    $s = new StringInputStream("abc");
+    $this->assertEquals(0, $s->columnOffset());
+    $s->next();
+    $this->assertEquals(1, $s->columnOffset());
+    $s->next();
+    $this->assertEquals(2, $s->columnOffset());
+  }
+
+  public function testCurrentLine() {
+    $txt = "1\n2\n\n\n\n3";
+    $stream = new StringInputStream($txt);
+    $this->assertEquals(1, $stream->currentLine());
+
+    // Advance over 1 and LF on to line 2 value 2.
+    $stream->next(); $stream->next();
+    $canary = $stream->current();
+    $this->assertEquals(2, $stream->currentLine());
+    $this->assertEquals('2', $canary);
+
+
+    // Advance over 4x LF
+    $stream->next(); $stream->next();
+    $stream->next(); $stream->next();
+    $stream->next();
+    $this->assertEquals(6, $stream->currentLine());
+    $this->assertEquals('3', $stream->current());
+
+    // Make sure it doesn't do 7.
+    $this->assertEquals(6, $stream->currentLine());
+  }
+
+  public function testRemainingChars() {
+    $text = "abcd";
+    $s = new StringInputStream($text);
+    $this->assertEquals($text, $s->remainingChars());
+
+    $text = "abcd";
+    $s = new StringInputStream($text);
+    $s->next(); // Pop one.
+    $this->assertEquals('bcd', $s->remainingChars());
+
+  }
+
+  public function testCharsUnitl() {
+    $text = "abcdefffffffghi";
+    $s = new StringInputStream($text);
+    $this->assertEquals('', $s->charsUntil('a'));
+    // Pointer at 'a', moves 2 to 'c'
+    $this->assertEquals('ab', $s->charsUntil('w', 2));
+
+    // Pointer at 'c', moves to first 'f'
+    $this->assertEquals('cde', $s->charsUntil('fzxv'));
+
+    // Only get five 'f's
+    $this->assertEquals('fffff', $s->charsUntil('g', 5));
+
+    // Get just the last two 'f's
+    $this->assertEquals('ff', $s->charsUntil('g'));
+
+    // This should scan to the end.
+    $this->assertEquals('ghi', $s->charsUntil('w', 9));
+
+  }
+
+  public function testCharsWhile() {
+    $text = "abcdefffffffghi";
+    $s = new StringInputStream($text);
+
+    $this->assertEquals('ab', $s->charsWhile('ba'));
+
+    $this->assertEquals('', $s->charsWhile('a'));
+    $this->assertEquals('cde', $s->charsWhile('cdeba'));
+    $this->assertEquals('ff', $s->charsWhile('f', 2));
+    $this->assertEquals('fffff', $s->charsWhile('f'));
+    $this->assertEquals('g', $s->charsWhile('fg'));
+    $this->assertEquals('hi', $s->charsWhile('fghi', 99));
+
+  }
+
+  public function testBOM() {
+
+    // Ignore in-text BOM.
+    $stream = new StringInputStream("a\xEF\xBB\xBF");
+    $this->assertEquals("a\xEF\xBB\xBF", $stream->remainingChars(), 'A non-leading U+FEFF (BOM/ZWNBSP) should remain');
+
+    // Strip leading BOM
+    $leading = new StringInputStream("\xEF\xBB\xBFa");
+    $this->assertEquals('a', $leading->current(), 'BOM should be stripped');
+  }
+
+  // public function testCarriageReturn() {
+
+  //   // Replace NULL with Unicode replacement.
+  //   $stream = new StringInputStream("\0\0\0");
+  //   $this->assertEquals("\xEF\xBF\xBD\xEF\xBF\xBD\xEF\xBF\xBD", $stream->remainingChars(), 'Null character should be replaced by U+FFFD');
+  //   $this->assertEquals(3, count($stream->errors), 'Null character should set parse error: ' . print_r($stream->errors, TRUE));
+
+  //   // Remove CR when next to LF.
+  //   $stream = new StringInputStream("\r\n");
+  //   $this->assertEquals("\n", $stream->remainingChars(), 'CRLF should be replaced by LF');
+
+  //   // Convert CR to LF when on its own.
+  //   $stream = new StringInputStream("\r");
+  //   $this->assertEquals("\n", $stream->remainingChars(), 'CR should be replaced by LF');
+  // }
+
+
+  // public function invalidParseErrorTestHandler($input, $numErrors, $name) {
+  //   $stream = new StringInputStream($input);
+  //   $this->assertEquals($input, $stream->remainingChars(), $name . ' (stream content)');
+  //   $this->assertEquals($numErrors, count($stream->errors), $name . ' (number of errors)');
+  // }
+
+  // public function testInvalidReplace() {
+  //   $invalidTest = array(
+
+  //     // Min/max overlong
+  //     "\xC0\x80a" => 'Overlong representation of U+0000',
+  //     "\xE0\x80\x80a" => 'Overlong representation of U+0000',
+  //     "\xF0\x80\x80\x80a" => 'Overlong representation of U+0000',
+  //     "\xF8\x80\x80\x80\x80a" => 'Overlong representation of U+0000',
+  //     "\xFC\x80\x80\x80\x80\x80a" => 'Overlong representation of U+0000',
+  //     "\xC1\xBFa" => 'Overlong representation of U+007F',
+  //     "\xE0\x9F\xBFa" => 'Overlong representation of U+07FF',
+  //     "\xF0\x8F\xBF\xBFa" => 'Overlong representation of U+FFFF',
+
+
+  //     "a\xDF" => 'Incomplete two byte sequence (missing final byte)',
+  //     "a\xEF\xBF" => 'Incomplete three byte sequence (missing final byte)',
+  //     "a\xF4\xBF\xBF" => 'Incomplete four byte sequence (missing final byte)',
+
+  //     // Min/max continuation bytes
+  //     "a\x80" => 'Lone 80 continuation byte',
+  //     "a\xBF" => 'Lone BF continuation byte',
+
+  //     // Invalid bytes (these can never occur)
+  //     "a\xFE" => 'Invalid FE byte',
+  //     "a\xFF" => 'Invalid FF byte',
+  //   );
+  //   foreach ($invalidTest as $test => $note) {
+  //     $stream = new StringInputStream($test);
+  //     $this->assertEquals('a', $stream->remainingChars(), $note);
+  //   }
+
+  //   // MPB:
+  //   // It appears that iconv just leaves these alone. Not sure what to 
+  //   // do.
+  //   /*
+  //   $converted = array(
+  //     "a\xF5\x90\x80\x80" => 'U+110000, off unicode planes.',
+  //   );
+  //   foreach ($converted as $test => $note) {
+  //     $stream = new StringInputStream($test);
+  //     $this->assertEquals(2, mb_strlen($stream->remainingChars()), $note);
+  //   }
+  //    */
+  // }
+
+  // public function testInvalidParseError() {
+  //   // C0 controls (except U+0000 and U+000D due to different handling)
+  //   $this->invalidParseErrorTestHandler("\x01", 1, 'U+0001 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x02", 1, 'U+0002 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x03", 1, 'U+0003 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x04", 1, 'U+0004 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x05", 1, 'U+0005 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x06", 1, 'U+0006 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x07", 1, 'U+0007 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x08", 1, 'U+0008 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x09", 0, 'U+0009 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x0A", 0, 'U+000A (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x0B", 1, 'U+000B (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x0C", 0, 'U+000C (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x0E", 1, 'U+000E (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x0F", 1, 'U+000F (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x10", 1, 'U+0010 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x11", 1, 'U+0011 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x12", 1, 'U+0012 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x13", 1, 'U+0013 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x14", 1, 'U+0014 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x15", 1, 'U+0015 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x16", 1, 'U+0016 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x17", 1, 'U+0017 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x18", 1, 'U+0018 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x19", 1, 'U+0019 (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x1A", 1, 'U+001A (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x1B", 1, 'U+001B (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x1C", 1, 'U+001C (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x1D", 1, 'U+001D (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x1E", 1, 'U+001E (C0 control)');
+  //   $this->invalidParseErrorTestHandler("\x1F", 1, 'U+001F (C0 control)');
+    
+  //   // DEL (U+007F)
+  //   $this->invalidParseErrorTestHandler("\x7F", 1, 'U+007F');
+    
+  //   // C1 Controls
+  //   $this->invalidParseErrorTestHandler("\xC2\x80", 1, 'U+0080 (C1 control)');
+  //   $this->invalidParseErrorTestHandler("\xC2\x9F", 1, 'U+009F (C1 control)');
+  //   $this->invalidParseErrorTestHandler("\xC2\xA0", 0, 'U+00A0 (first codepoint above highest C1 control)');
+    
+  //   // Single UTF-16 surrogates
+  //   $this->invalidParseErrorTestHandler("\xED\xA0\x80", 1, 'U+D800 (UTF-16 surrogate character)');
+  //   $this->invalidParseErrorTestHandler("\xED\xAD\xBF", 1, 'U+DB7F (UTF-16 surrogate character)');
+  //   $this->invalidParseErrorTestHandler("\xED\xAE\x80", 1, 'U+DB80 (UTF-16 surrogate character)');
+  //   $this->invalidParseErrorTestHandler("\xED\xAF\xBF", 1, 'U+DBFF (UTF-16 surrogate character)');
+  //   $this->invalidParseErrorTestHandler("\xED\xB0\x80", 1, 'U+DC00 (UTF-16 surrogate character)');
+  //   $this->invalidParseErrorTestHandler("\xED\xBE\x80", 1, 'U+DF80 (UTF-16 surrogate character)');
+  //   $this->invalidParseErrorTestHandler("\xED\xBF\xBF", 1, 'U+DFFF (UTF-16 surrogate character)');
+    
+  //   // Paired UTF-16 surrogates
+  //   $this->invalidParseErrorTestHandler("\xED\xA0\x80\xED\xB0\x80", 2, 'U+D800 U+DC00 (paired UTF-16 surrogates)');
+  //   $this->invalidParseErrorTestHandler("\xED\xA0\x80\xED\xBF\xBF", 2, 'U+D800 U+DFFF (paired UTF-16 surrogates)');
+  //   $this->invalidParseErrorTestHandler("\xED\xAD\xBF\xED\xB0\x80", 2, 'U+DB7F U+DC00 (paired UTF-16 surrogates)');
+  //   $this->invalidParseErrorTestHandler("\xED\xAD\xBF\xED\xBF\xBF", 2, 'U+DB7F U+DFFF (paired UTF-16 surrogates)');
+  //   $this->invalidParseErrorTestHandler("\xED\xAE\x80\xED\xB0\x80", 2, 'U+DB80 U+DC00 (paired UTF-16 surrogates)');
+  //   $this->invalidParseErrorTestHandler("\xED\xAE\x80\xED\xBF\xBF", 2, 'U+DB80 U+DFFF (paired UTF-16 surrogates)');
+  //   $this->invalidParseErrorTestHandler("\xED\xAF\xBF\xED\xB0\x80", 2, 'U+DBFF U+DC00 (paired UTF-16 surrogates)');
+  //   $this->invalidParseErrorTestHandler("\xED\xAF\xBF\xED\xBF\xBF", 2, 'U+DBFF U+DFFF (paired UTF-16 surrogates)');
+    
+  //   // Charcters surrounding surrogates
+  //   $this->invalidParseErrorTestHandler("\xED\x9F\xBF", 0, 'U+D7FF (one codepoint below lowest surrogate codepoint)');
+  //   $this->invalidParseErrorTestHandler("\xEF\xBF\xBD", 0, 'U+DE00 (one codepoint above highest surrogate codepoint)');
+    
+  //   // Permanent noncharacters
+  //   $this->invalidParseErrorTestHandler("\xEF\xB7\x90", 1, 'U+FDD0 (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xEF\xB7\xAF", 1, 'U+FDEF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xEF\xBF\xBE", 1, 'U+FFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xEF\xBF\xBF", 1, 'U+FFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF0\x9F\xBF\xBE", 1, 'U+1FFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF0\x9F\xBF\xBF", 1, 'U+1FFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF0\xAF\xBF\xBE", 1, 'U+2FFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF0\xAF\xBF\xBF", 1, 'U+2FFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF0\xBF\xBF\xBE", 1, 'U+3FFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF0\xBF\xBF\xBF", 1, 'U+3FFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF1\x8F\xBF\xBE", 1, 'U+4FFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF1\x8F\xBF\xBF", 1, 'U+4FFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF1\x9F\xBF\xBE", 1, 'U+5FFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF1\x9F\xBF\xBF", 1, 'U+5FFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF1\xAF\xBF\xBE", 1, 'U+6FFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF1\xAF\xBF\xBF", 1, 'U+6FFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF1\xBF\xBF\xBE", 1, 'U+7FFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF1\xBF\xBF\xBF", 1, 'U+7FFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF2\x8F\xBF\xBE", 1, 'U+8FFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF2\x8F\xBF\xBF", 1, 'U+8FFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF2\x9F\xBF\xBE", 1, 'U+9FFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF2\x9F\xBF\xBF", 1, 'U+9FFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF2\xAF\xBF\xBE", 1, 'U+AFFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF2\xAF\xBF\xBF", 1, 'U+AFFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF2\xBF\xBF\xBE", 1, 'U+BFFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF2\xBF\xBF\xBF", 1, 'U+BFFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF3\x8F\xBF\xBE", 1, 'U+CFFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF3\x8F\xBF\xBF", 1, 'U+CFFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF3\x9F\xBF\xBE", 1, 'U+DFFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF3\x9F\xBF\xBF", 1, 'U+DFFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF3\xAF\xBF\xBE", 1, 'U+EFFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF3\xAF\xBF\xBF", 1, 'U+EFFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF3\xBF\xBF\xBE", 1, 'U+FFFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF3\xBF\xBF\xBF", 1, 'U+FFFFF (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF4\x8F\xBF\xBE", 1, 'U+10FFFE (permanent noncharacter)');
+  //   $this->invalidParseErrorTestHandler("\xF4\x8F\xBF\xBF", 1, 'U+10FFFF (permanent noncharacter)');
+  // }
+}