tests/phpunit/includes/libs/JavaScriptMinifierTest.php

   1 <?php
   2
   3 class JavaScriptMinifierTest extends MediaWikiTestCase {
   4
   5         function provideCases() {
   6                 return array(
   7                         // Basic tokens
   8                         array( "\r\t\f \v\n\r", "" ),
   9                         array( "/* Foo *\n*bar\n*/", "" ),
  10                         /**
  11                          * '  Foo \' bar \
  12                          *  baz \' quox '  .
  13                          */
  14                         array( "'  Foo  \\'  bar  \\\n  baz  \\'  quox  '  .length", "'  Foo  \\'  bar  \\\n  baz  \\'  quox  '.length" ),
  15                         array( "\"  Foo  \\\"  bar  \\\n  baz  \\\"  quox  \"  .length", "\"  Foo  \\\"  bar  \\\n  baz  \\\"  quox  \".length" ),
  16                         array( "// Foo b/ar baz", "" ),
  17                         array( "/  Foo  \\/  bar  [  /  \\]  /  ]  baz  /  .length", "/  Foo  \\/  bar  [  /  \\]  /  ]  baz  /.length" ),
  18                         // HTML comments
  19                         array( "<!-- Foo bar", "" ),
  20                         array( "<!-- Foo --> bar", "" ),
  21                         array( "--> Foo", "" ),
  22                         array( "x --> y", "x-->y" ),
  23                         // Semicolon insertion
  24                         array( "(function(){return\nx;})", "(function(){return\nx;})" ),
  25                         array( "throw\nx;", "throw\nx;" ),
  26                         array( "while(p){continue\nx;}", "while(p){continue\nx;}" ),
  27                         array( "while(p){break\nx;}", "while(p){break\nx;}" ),
  28                         array( "var\nx;", "var x;" ),
  29                         array( "x\ny;", "x\ny;" ),
  30                         array( "x\n++y;", "x\n++y;" ),
  31                         array( "x\n!y;", "x\n!y;" ),
  32                         array( "x\n{y}", "x\n{y}" ),
  33                         array( "x\n+y;", "x+y;" ),
  34                         array( "x\n(y);", "x(y);" ),
  35                         array( "5.\nx;", "5.\nx;" ),
  36                         array( "0xFF.\nx;", "0xFF.x;" ),
  37                         array( "5.3.\nx;", "5.3.x;" ),
  38                         // Token separation
  39                         array( "x  in  y", "x in y" ),
  40                         array( "/x/g  in  y", "/x/g in y" ),
  41                         array( "x  in  30", "x in 30" ),
  42                         array( "x  +  ++  y", "x+ ++y" ),
  43                         array( "x  /  /y/.exec(z)", "x/ /y/.exec(z)" ),
  44                         // State machine
  45                         array( "/  x/g", "/  x/g" ),
  46                         array( "(function(){return/  x/g})", "(function(){return/  x/g})" ),
  47                         array( "+/  x/g", "+/  x/g" ),
  48                         array( "++/  x/g", "++/  x/g" ),
  49                         array( "x/  x/g", "x/x/g" ),
  50                         array( "(/  x/g)", "(/  x/g)" ),
  51                         array( "if(/  x/g);", "if(/  x/g);" ),
  52                         array( "(x/  x/g)", "(x/x/g)" ),
  53                         array( "([/  x/g])", "([/  x/g])" ),
  54                         array( "+x/  x/g", "+x/x/g" ),
  55                         array( "{}/  x/g", "{}/  x/g" ),
  56                         array( "+{}/  x/g", "+{}/x/g" ),
  57                         array( "(x)/  x/g", "(x)/x/g" ),
  58                         array( "if(x)/  x/g", "if(x)/  x/g" ),
  59                         array( "for(x;x;{}/  x/g);", "for(x;x;{}/x/g);" ),
  60                         array( "x;x;{}/  x/g", "x;x;{}/  x/g" ),
  61                         array( "x:{}/  x/g", "x:{}/  x/g" ),
  62                         array( "switch(x){case y?z:{}/  x/g:{}/  x/g;}", "switch(x){case y?z:{}/x/g:{}/  x/g;}" ),
  63                         array( "function x(){}/  x/g", "function x(){}/  x/g" ),
  64                         array( "+function x(){}/  x/g", "+function x(){}/x/g" ),
  65
  66                         // Tests for things that broke in the past
  67                         // Multiline quoted string
  68                         array( "var foo=\"\\\nblah\\\n\";", "var foo=\"\\\nblah\\\n\";" ),
  69                         // Multiline quoted string followed by string with spaces
  70                         array( "var foo=\"\\\nblah\\\n\";\nvar baz = \" foo \";\n", "var foo=\"\\\nblah\\\n\";var baz=\" foo \";" ),
  71                         // URL in quoted string ( // is not a comment)
  72                         array( "aNode.setAttribute('href','http://foo.bar.org/baz');", "aNode.setAttribute('href','http://foo.bar.org/baz');" ),
  73                         // URL in quoted string after multiline quoted string
  74                         array( "var foo=\"\\\nblah\\\n\";\naNode.setAttribute('href','http://foo.bar.org/baz');", "var foo=\"\\\nblah\\\n\";aNode.setAttribute('href','http://foo.bar.org/baz');" ),
  75                         // Division vs. regex nastiness
  76                         array( "alert( (10+10) / '/'.charCodeAt( 0 ) + '//' );", "alert((10+10)/'/'.charCodeAt(0)+'//');" ),
  77                         array( "if(1)/a /g.exec('Pa ss');", "if(1)/a /g.exec('Pa ss');" ),
  78
  79                         // newline insertion after 1000 chars: break after the "++", not before
  80                         array( str_repeat( ';', 996 ) . "if(x++);", str_repeat( ';', 996 ) . "if(x++\n);" ),
  81                 );
  82         }
  83
  84         /**
  85          * @dataProvider provideCases
  86          */
  87         function testJavaScriptMinifierOutput( $code, $expectedOutput ) {
  88                 $minified = JavaScriptMinifier::minify( $code );
  89
  90                 // JSMin+'s parser will throw an exception if output is not valid JS.
  91                 // suppression of warnings needed for stupid crap
  92                 wfSuppressWarnings();
  93                 $parser = new JSParser();
  94                 wfRestoreWarnings();
  95                 $parser->parse( $minified, 'minify-test.js', 1 );
  96
  97                 $this->assertEquals( $expectedOutput, $minified, "Minified output should be in the form expected." );
  98         }
  99 }