Update cookie value and attribute setting behavior to match other UAs

net/cookies/cookie_store_unittest.h

Index: net/cookies/cookie_store_unittest.h
diff --git a/net/cookies/cookie_store_unittest.h b/net/cookies/cookie_store_unittest.h
index 3f8b037cef84c7e61ccd3acb8f2cb93b3cbf6d33..7bef37fbf5a5e6144125a3da51cd99a32061debb 100644
--- a/net/cookies/cookie_store_unittest.h
+++ b/net/cookies/cookie_store_unittest.h
@@ -465,6 +465,46 @@ TYPED_TEST_P(CookieStoreTest, SetCookieWithDetailsAsync) {
   EXPECT_TRUE(++it == cookies.end());
 }
 
+// The iOS networking stack uses the iOS cookie parser, which we do not
+// control. While it is spec-compliant, that does not match the practical
+// behavior of most UAs in some cases, which we try to replicate. See
+// https://crbug.com/638389 for more information.
+TYPED_TEST_P(CookieStoreTest, EmptyKeyTest) {
+#if !defined(OS_IOS)
+  CookieStore* cs = this->GetCookieStore();
+
+  GURL url1("http://foo1.bar.com");
+  EXPECT_TRUE(this->SetCookie(cs, url1, "foo"));
+  EXPECT_EQ("foo", this->GetCookies(cs, url1));
+
+  // Regression tests for https://crbug.com/601786
+  GURL url2("http://foo2.bar.com");
+  EXPECT_TRUE(this->SetCookie(cs, url2, "foo"));
+  EXPECT_TRUE(this->SetCookie(cs, url2, "\t"));
+  EXPECT_EQ("", this->GetCookies(cs, url2));
+
+  GURL url3("http://foo3.bar.com");
+  EXPECT_TRUE(this->SetCookie(cs, url3, "foo"));
+  EXPECT_TRUE(this->SetCookie(cs, url3, "="));
+  EXPECT_EQ("", this->GetCookies(cs, url3));
+
+  GURL url4("http://foo4.bar.com");
+  EXPECT_TRUE(this->SetCookie(cs, url4, "foo"));
+  EXPECT_TRUE(this->SetCookie(cs, url4, ""));
+  EXPECT_EQ("", this->GetCookies(cs, url4));
+
+  GURL url5("http://foo5.bar.com");
+  EXPECT_TRUE(this->SetCookie(cs, url5, "foo"));
+  EXPECT_TRUE(this->SetCookie(cs, url5, "; bar"));
+  EXPECT_EQ("", this->GetCookies(cs, url5));
+
+  GURL url6("http://foo6.bar.com");
+  EXPECT_TRUE(this->SetCookie(cs, url6, "foo"));
+  EXPECT_TRUE(this->SetCookie(cs, url6, " "));
+  EXPECT_EQ("", this->GetCookies(cs, url6));
+#endif
+}
+
 TYPED_TEST_P(CookieStoreTest, DomainTest) {
   CookieStore* cs = this->GetCookieStore();
   EXPECT_TRUE(this->SetCookie(cs, this->http_www_google_.url(), "A=B"));
@@ -562,6 +602,9 @@ TYPED_TEST_P(CookieStoreTest, InvalidDomainTest) {
 
   // More specific sub-domain than allowed.
   EXPECT_FALSE(this->SetCookie(cs, url_foobar, "a=1; domain=.yo.foo.bar.com"));
+  // Regression test for https://crbug.com/601786
+  EXPECT_FALSE(
+      this->SetCookie(cs, url_foobar, "a=1; domain=.yo.foo.bar.com; domain="));
 
   EXPECT_FALSE(this->SetCookie(cs, url_foobar, "b=2; domain=.foo.com"));
   EXPECT_FALSE(this->SetCookie(cs, url_foobar, "c=3; domain=.bar.foo.com"));
@@ -1374,6 +1417,7 @@ TYPED_TEST_P(CookieStoreTest, DeleteSessionCookie) {
 
 REGISTER_TYPED_TEST_CASE_P(CookieStoreTest,
                            SetCookieWithDetailsAsync,
+                           EmptyKeyTest,
                            DomainTest,
                            DomainWithTrailingDotTest,
                            ValidSubdomainTest,