Issue 4125 - [emscripten] Convert filter classes to C++

test/filterClasses.js

Index: test/filterClasses.js
===================================================================
new file mode 100644
--- /dev/null
+++ b/test/filterClasses.js
@@ -0,0 +1,293 @@
+"use strict";
+
+let {
+  Filter, InvalidFilter, CommentFilter, ActiveFilter, RegExpFilter,
+  WhitelistFilter, ElemHideFilter, ElemHideException, CSSPropertyFilter
+} = require("../lib/filterClasses");
+
+exports.testFromText = function(test)
+{
+  let tests = [
+    ["!asdf", CommentFilter, "comment"],
+    ["asdf", RegExpFilter, "blocking"],
+    ["asdf$image,~collapse", RegExpFilter, "blocking"],
+    ["/asdf/", RegExpFilter, "blocking"],
+    ["/asdf??+/", InvalidFilter, "invalid"],
+    ["@@asdf", WhitelistFilter, "whitelist"],
+    ["@@asdf$image,~collapse", WhitelistFilter, "whitelist"],
+    ["@@/asdf/", WhitelistFilter, "whitelist"],
+    ["@@/asdf??+/", InvalidFilter, "invalid"],
+    ["##asdf", ElemHideFilter, "elemhide"],
+    ["#@#asdf", ElemHideException, "elemhideexception"],
+    ["foobar##asdf", ElemHideFilter, "elemhide"],
+    ["foobar#@#asdf", ElemHideException, "elemhideexception"],
+    ["foobar##a", ElemHideFilter, "elemhide"],
+    ["foobar#@#a", ElemHideException, "elemhideexception"],
+
+    ["foobar#asdf", RegExpFilter, "blocking"],
+    ["foobar|foobas##asdf", RegExpFilter, "blocking"],
+    ["foobar##asdf{asdf}", RegExpFilter, "blocking"],
+    ["foobar##", RegExpFilter, "blocking"],
+    ["foobar#@#", RegExpFilter, "blocking"],
+    ["asdf$foobar", InvalidFilter, "invalid"],
+    ["asdf$image,foobar", InvalidFilter, "invalid"],
+    ["asdf$image=foobar", RegExpFilter, "blocking"],
+    ["asdf$image=foobar=xyz,~collapse", RegExpFilter, "blocking"],
+
+    ["##foo[-abp-properties='something']bar", InvalidFilter, "invalid"],
+    ["#@#foo[-abp-properties='something']bar", ElemHideException, "elemhideexception"],
+    ["example.com##foo[-abp-properties='something']bar", CSSPropertyFilter, "cssproperty"],
+    ["example.com#@#foo[-abp-properties='something']bar", ElemHideException, "elemhideexception"],
+    ["~example.com##foo[-abp-properties='something']bar", InvalidFilter, "invalid"],
+    ["~example.com#@#foo[-abp-properties='something']bar", ElemHideException, "elemhideexception"],
+    ["~example.com,~example.info##foo[-abp-properties='something']bar", InvalidFilter, "invalid"],
+    ["~example.com,~example.info#@#foo[-abp-properties='something']bar", ElemHideException, "elemhideexception"],
+    ["~sub.example.com,example.com##foo[-abp-properties='something']bar", CSSPropertyFilter, "cssproperty"],
+    ["~sub.example.com,example.com#@#foo[-abp-properties='something']bar", ElemHideException, "elemhideexception"],
+    ["example.com,~sub.example.com##foo[-abp-properties='something']bar", CSSPropertyFilter, "cssproperty"],
+    ["example.com,~sub.example.com#@#foo[-abp-properties='something']bar", ElemHideException, "elemhideexception"],
+    ["example.com##[-abp-properties='something']", CSSPropertyFilter, "cssproperty"],
+    ["example.com#@#[-abp-properties='something']", ElemHideException, "elemhideexception"],
+    ["example.com##[-abp-properties=\"something\"]", CSSPropertyFilter, "cssproperty"],
+    ["example.com#@#[-abp-properties=\"something\"]", ElemHideException, "elemhideexception"],
+    ["example.com##[-abp-properties=(something)]", ElemHideFilter, "elemhide"],
+    ["example.com#@#[-abp-properties=(something)]", ElemHideException, "elemhideexception"],
+  ];
+  for (let [text, type, typeName, location] of tests)
+  {
+    let filter = Filter.fromText(text);
+    test.ok(filter instanceof Filter, "Got filter for " + text);
+    test.equal(filter.text, text, "Correct filter text for " + text);
+    test.ok(filter instanceof type, "Correct filter type for " + text);
+    test.equal(filter.type, typeName, "Type name for " + text + " is " + typeName);
+    if (type == InvalidFilter)
+      test.ok(filter.reason, "Invalid filter " + text + " has a reason set");
+    filter.delete();
+  }
+  test.done();
+};
+
+exports.getKnownFilter = function(test)
+{
+  let filter1 = Filter.getKnownFilter("someknownfilter");
+  test.ok(!filter1, "Unknown filter returns null");
+
+  let filter2 = Filter.fromText("someknownfilter");
+  filter1 = Filter.getKnownFilter("someknownfilter");
+  test.ok(filter1, "Known filter returned");
+
+  filter2.hitCount = 432;
+  test.equal(filter1.hitCount, 432, "Changes on previous instance are reflected on new instance");
+
+  filter1.delete();
+  filter2.delete();
+
+  test.done();
+};
+
+exports.testNormalize = function(test)
+{
+  let tests = [
+    [" !  comment something ", "!  comment something"],
+    [" ! \n comment something ", "!  comment something"],
+    ["  foo bar ", "foobar"],
+    [" foo , bar #  # foo > bar ", "foo,bar##foo > bar", "foo,bar", "foo > bar"],
+    [" foo , bar # @   # foo > bar ", "foo,bar#@#foo > bar", "foo,bar", "foo > bar"],
+    ["foOBar"],
+    ["foOBar#xyz"],
+    ["foOBar$iMaGe,object_subrequest,~coLLapse", "foOBar$image,object-subrequest,~collapse"],
+    ["foOBar$doMain=EXample.COM|~exAMPLE.РФ", "foOBar$domain=example.com|~example.рф"],
+    ["foOBar$sitekeY=SiteKey", "foOBar$sitekey=SiteKey"],
+    ["exampLE.com##fooBAr", "example.com##fooBAr"],
+    ["exampLE.com#@#fooBAr", "example.com#@#fooBAr"],
+    ["exampLE.РФ#@#fooBAr", "example.рф#@#fooBAr"],
+  ];
+
+  for (let [text, expected, selectorDomain, selector] of tests)
+  {
+    if (!expected)
+      expected = text;
+
+    let filter1 = Filter.fromText(text);
+    let filter2 = Filter.fromText(expected);
+
+    test.equal(filter1.text, expected, "Filter text " + text + " got normalized");
+    test.equal(filter2.text, expected, "Already normalized text " + expected + " didn't change");
+
+    if (filter1 instanceof ActiveFilter)
+    {
+      filter1.hitCount = 567;
+      test.equal(filter1.hitCount, filter2.hitCount, "Property changes on filter " + text + " get reflected on filter " + expected);
+    }
+
+    if (selectorDomain)
+    {
+      let expectedDomains = selectorDomain.split(",").sort().join(",");
+      let actualDomains1 = filter1.selectorDomain.split(",").sort().join(",");
+      let actualDomains2 = filter2.selectorDomain.split(",").sort().join(",");
+      test.equal(actualDomains1, expectedDomains, "Correct selector domain for filter " + text);
+      test.equal(actualDomains1, expectedDomains, "Correct selector domain for filter " + expected);
+
+      test.equal(filter1.selector, selector, "Correct selector for filter " + text);
+      test.equal(filter2.selector, selector, "Correct selector for filter " + expected);
+    }
+
+    filter1.delete();
+    filter2.delete();
+  }
+
+  test.done();
+};
+
+exports.testSerialize = function(test)
+{
+  // Comment
+  let filter = Filter.fromText("! serialize");
+  test.equal(filter.serialize(), "[Filter]\ntext=! serialize\n");
+  filter.delete();
+
+  // Blocking filter
+  filter = Filter.fromText("serialize");
+  test.equal(filter.serialize(), "[Filter]\ntext=serialize\n");
+  filter.disabled = true;
+  test.equal(filter.serialize(), "[Filter]\ntext=serialize\ndisabled=true\n");
+  filter.disabled = false;
+  filter.hitCount = 10;
+  filter.lastHit = 12;
+  test.equal(filter.serialize(), "[Filter]\ntext=serialize\nhitCount=10\nlastHit=12\n");
+  filter.delete();
+
+  // Invalid filter
+  filter = Filter.fromText("serialize$foobar");
+  test.equal(filter.serialize(), "[Filter]\ntext=serialize$foobar\n");
+  filter.delete();
+
+  // Element hiding filter
+  filter = Filter.fromText("example.com##serialize");
+  test.equal(filter.serialize(), "[Filter]\ntext=example.com##serialize\n");
+  filter.disabled = true;
+  filter.lastHit = 5;
+  test.equal(filter.serialize(), "[Filter]\ntext=example.com##serialize\ndisabled=true\nlastHit=5\n");
+  filter.delete();
+
+  test.done();
+}
+
+exports.testActiveFilter = function(test)
+{
+  let filter1 = Filter.fromText("asdf");
+  let filter1copy = Filter.fromText("asdf");
+  let filter2 = Filter.fromText("##foobar");
+
+  test.ok(!filter1.disabled && !filter1copy.disabled && !filter2.disabled, "Filters are initially enabled");
+  filter1.disabled = true;
+  test.ok(filter1.disabled, "Disabling filter works");
+  test.ok(filter1copy.disabled, "Filter copies are also disabled");
+  test.ok(!filter2.disabled, "Disabling one filter doesn't disable others");
+
+  test.ok(filter1.hitCount === 0 && filter1copy.hitCount === 0 && filter2.hitCount === 0, "Filters have no hit initially");
+  filter1.hitCount = 5;
+  test.equal(filter1.hitCount, 5, "Changing hit count works");
+  test.equal(filter1copy.hitCount, 5, "Hit count of filter copies is also changed");
+  test.equal(filter2.hitCount, 0, "Hit count of other filters isn't affected");
+
+  test.ok(filter1.lastHit === 0 && filter1copy.lastHit === 0 && filter2.lastHit === 0, "Filters have no last hit time initially");
+  filter1.lastHit = 10;
+  test.equal(filter1.lastHit, 10, "Changing last hit time works");
+  test.equal(filter1copy.lastHit, 10, "Last hit time of filter copies is also changed");
+  test.equal(filter2.lastHit, 0, "Last hit time of other filters isn't affected");
+
+  filter1.delete();
+  filter1copy.delete();
+  filter2.delete();
+
+  test.done();
+};
+
+exports.testIsGeneric = function(test)
+{
+  let tests = [
+    ["asfd", true],
+    ["|http://example.com/asdf", true],
+    ["||example.com/asdf", true],
+    ["asfd$third-party", true],
+    ["asdf$domain=com", false],
+    ["asdf$domain=example.com", false],
+    ["asdf$image,domain=example.com", false],
+    ["asdf$~image,domain=example.com", false],
+    ["asdf$third-party,domain=example.com", false],
+    ["||example.com/asdf$~coLLapse,domain=example.com", false],
+    ["||example.com/asdf$domain=~example.com", true],
+    ["||example.com/asdf$third-party,domain=~example.com", true],
+    ["asdf$domain=foo.example.com|~example.com", false],
+    ["asdf$domain=foo.com|~example.com", false],
+    ["asdf$domain=~foo.com|~example.com", true],
+  ];
+
+  for (let [text, generic] of tests)
+  {
+    let filter = Filter.fromText(text);
+    test.equal(filter.isGeneric(), generic, "Filter " + text + " is generic");
+    filter.delete();
+  }
+
+  test.done();
+}
+
+exports.testElemHideSelector = function(test)
+{
+  function doTest(text, selector, selectorDomain)
+  {
+    let filter = Filter.fromText(text);
+    test.equal(filter.selector, selector, "Correct selector for " + text);
+
+    let actualDomains = filter.selectorDomain.split(",").sort().join(",");
+    let expectedDomains = selectorDomain.split(",").sort().join(",");
+    test.equal(actualDomains, expectedDomains, "Correct domains list for " + text);
+
+    filter.delete();
+  }
+
+  let tests = [
+    ["##foobar", "foobar", ""],
+    ["~example.com##foobar", "foobar", ""],
+    ["example.com##body > div:first-child", "body > div:first-child", "example.com"],
+    ["xYz,~example.com##foobar:not(whatever)", "foobar:not(whatever)","xyz"],
+    ["~xyz,com,~abc.com,example.info##foobar", "foobar", "com,example.info"],
+    ["foo,bar,bas,bam##foobar", "foobar", "foo,bar,bas,bam"],
+
+    // Good idea to test this? Maybe consider behavior undefined in this case.
+    ["foo,bar,bas,~bar##foobar", "foobar", "foo,bas"],
+  ];
+
+  for (let [text, selector, selectorDomain] of tests)
+  {
+    doTest(text, selector, selectorDomain);
+    doTest(text.replace("##", "#@#"), selector, selectorDomain);
+  }
+
+  test.done();
+};
+
+exports.textCSSRules = function(test)
+{
+  let tests = [
+    ["foo.com##[-abp-properties='abc']", "abc", "", ""],
+    ["foo.com##[-abp-properties='a\"bc']", "a\\\"bc", "", ""],
+    ["foo.com##[-abp-properties=\"abc\"]", "abc", "", ""],
+    ["foo.com##[-abp-properties=\"a'bc\"]", "a\\'bc", "", ""],
+    ["foo.com##aaa [-abp-properties='abc'] bbb", "abc", "aaa ", " bbb"],
+    ["foo.com##[-abp-properties='|background-image: url(data:*)']", "^background\\-image\\:\\ url\\(data\\:.*\\)", "", ""],
+  ];
+
+  for (let [text, regexp, prefix, suffix] of tests)
+  {
+    let filter = Filter.fromText(text);
+    test.equal(filter.regexpString, regexp, "Regular expression of " + text);
+    test.equal(filter.selectorPrefix, prefix, "Selector prefix of " + text);
+    test.equal(filter.selectorSuffix, suffix, "Selector suffix of " + text);
+    filter.delete();
+  }
+
+  test.done();
+};