Setting selectorText of PageRule accepts invalid selectors

third_party/WebKit/Source/core/css/CSSPageRuleTest.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/CSSPageRule.h"
 
 #include "core/css/CSSRuleList.h"
 #include "core/css/CSSTestHelper.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 TEST(CSSPageRule, Serializing)
 {
     CSSTestHelper helper;
 
     const char* cssRule = "@page :left { size: auto; }";
     helper.addCSSRules(cssRule);
     if (helper.cssRules()) {
         EXPECT_EQ(1u, helper.cssRules()->length());
         EXPECT_EQ(String(cssRule), helper.cssRules()->item(0)->cssText());
         EXPECT_EQ(CSSRule::PAGE_RULE, helper.cssRules()->item(0)->type());
         if (CSSPageRule* pageRule = toCSSPageRule(helper.cssRules()->item(0)))
             EXPECT_EQ(":left", pageRule->selectorText());
     }
 }
 
+TEST(CSSPageRule, selectorText)
+{
+    CSSTestHelper helper;
+
+    const char* cssRule = "@page :left { size: auto; }";
+    helper.addCSSRules(cssRule);
+    ASSERT(helper.cssRules());
+    EXPECT_EQ(1u, helper.cssRules()->length());
+
+    CSSPageRule* pageRule = toCSSPageRule(helper.cssRules()->item(0));
+    EXPECT_EQ(":left", pageRule->selectorText());
+
+    // set invalid page selector.
+    pageRule->setSelectorText(":hover");
+    EXPECT_EQ(":left", pageRule->selectorText());
+
+    // set page pseudo class selector.
+    pageRule->setSelectorText(":right");
+    EXPECT_EQ(":right", pageRule->selectorText());
+
+    // set page type selector.
+    pageRule->setSelectorText("namedpage");
+    EXPECT_EQ("namedpage", pageRule->selectorText());
+}
+
 } // namespace blink