Start refractoring extension permissions into ExtensionPermissionSet.

chrome/common/extensions/url_pattern_set_unittest.cc

Index: chrome/common/extensions/url_pattern_set_unittest.cc
diff --git a/chrome/common/extensions/url_pattern_set_unittest.cc b/chrome/common/extensions/url_pattern_set_unittest.cc
index 5336410963a7329d989e75498e6e619b8317ac61..6a8517595ef9d6c0e722501e7857bccc45e79d01 100644
--- a/chrome/common/extensions/url_pattern_set_unittest.cc
+++ b/chrome/common/extensions/url_pattern_set_unittest.cc
@@ -7,6 +7,27 @@
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace {
+
+static void AssertEqualExtents(const URLPatternSet& extent1,
+                               const URLPatternSet& extent2) {
+  URLPatternList patterns1 = extent1.patterns();
+  URLPatternList patterns2 = extent2.patterns();
+  std::set<std::string> strings1;
+  EXPECT_EQ(patterns1.size(), patterns2.size());
+
+  for (size_t i = 0; i < patterns1.size(); ++i)
+    strings1.insert(patterns1.at(i).GetAsString());
+
+  std::set<std::string> strings2;
+  for (size_t i = 0; i < patterns2.size(); ++i)
+    strings2.insert(patterns2.at(i).GetAsString());
+
+  EXPECT_EQ(strings1, strings2);
+}
+
+} // namespace
+
 static const int kAllSchemes =
     URLPattern::SCHEME_HTTP |
     URLPattern::SCHEME_HTTPS |
@@ -60,3 +81,33 @@ TEST(URLPatternSetTest, OverlapsWith) {
   EXPECT_TRUE(extent1.OverlapsWith(extent3));
   EXPECT_TRUE(extent3.OverlapsWith(extent1));
 }
+
+TEST(URLPatternSetTest, CreateUnion) {
+  URLPatternSet empty_extent;
+
+  URLPatternSet extent1;
+  extent1.AddPattern(URLPattern(kAllSchemes, "http://www.google.com/f*"));
+  extent1.AddPattern(URLPattern(kAllSchemes, "http://www.yahoo.com/b*"));
+
+  URLPatternSet expected;
+  expected.AddPattern(URLPattern(kAllSchemes, "http://www.google.com/f*"));
+  expected.AddPattern(URLPattern(kAllSchemes, "http://www.yahoo.com/b*"));
+
+  // Union with an empty set.
+  URLPatternSet result;
+  URLPatternSet::CreateUnion(extent1, empty_extent, &result);
+  AssertEqualExtents(expected, result);
+
+  // Union with a real set (including a duplicate).
+  URLPatternSet extent2;
+  extent2.AddPattern(URLPattern(kAllSchemes, "http://www.reddit.com/f*"));
+  extent2.AddPattern(URLPattern(kAllSchemes, "http://www.yahoo.com/z*"));
+  extent2.AddPattern(URLPattern(kAllSchemes, "http://www.google.com/f*"));
+
+  expected.AddPattern(URLPattern(kAllSchemes, "http://www.reddit.com/f*"));
+  expected.AddPattern(URLPattern(kAllSchemes, "http://www.yahoo.com/z*"));
+
+  result.ClearPatterns();
+  URLPatternSet::CreateUnion(extent1, extent2, &result);
+  AssertEqualExtents(expected, result);
+}