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Add a unit test from aspnetcore #56108

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merged 5 commits into from
Jul 29, 2021
Merged

Add a unit test from aspnetcore #56108

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f5a40d2
Add a unit test from aspnetcore
Jul 21, 2021
ffa17d6
Expand regex backtracking test cases for ASP.NET
jeffhandley Jul 28, 2021
3d8abd5
None and Compiled are already covered; remove loop
jeffhandley Jul 28, 2021
2f829aa
Fix typo in comment
jeffhandley Jul 28, 2021
a537eda
Make corrections to the new unit tests
jeffhandley Jul 29, 2021
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33 changes: 33 additions & 0 deletions src/libraries/System.Text.RegularExpressions/tests/Regex.Groups.Tests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -582,6 +582,39 @@ public static IEnumerable<object[]> Groups_Basic_TestData()
yield return new object[] { null, @"([a-z]*)([\w])", "cat", RegexOptions.IgnoreCase, new string[] { "cat", "ca", "t" } };
yield return new object[] { null, @"^([a-z]*)([\w])$", "cat", RegexOptions.IgnoreCase, new string[] { "cat", "ca", "t" } };

// Backtracking with multiple (.*) groups -- important ASP.NET scenario
yield return new object[] { null, @"(.*)/(.*).aspx", "/.aspx", RegexOptions.None, new string[] { "/.aspx", string.Empty, string.Empty } };
yield return new object[] { null, @"(.*)/(.*).aspx", "/homepage.aspx", RegexOptions.None, new string[] { "/homepage.aspx", string.Empty, "homepage" } };
yield return new object[] { null, @"(.*)/(.*).aspx", "pages/.aspx", RegexOptions.None, new string[] { "pages/.aspx", "pages", string.Empty } };
yield return new object[] { null, @"(.*)/(.*).aspx", "pages/homepage.aspx", RegexOptions.None, new string[] { "pages/homepage.aspx", "pages", "homepage" } };
yield return new object[] { null, @"(.*)/(.*).aspx", "/pages/homepage.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx", "/pages", "homepage" } };
yield return new object[] { null, @"(.*)/(.*).aspx", "/pages/homepage/index.aspx", RegexOptions.None, new string[] { "/pages/homepage/index.aspx", "/pages/homepage", "index" } };
yield return new object[] { null, @"(.*)/(.*).aspx", "/pages/homepage.aspx/index.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx/index.aspx", "/pages/homepage.aspx", "index" } };
yield return new object[] { null, @"(.*)/(.*)/(.*).aspx", "/pages/homepage.aspx/index.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx/index.aspx", "/pages", "homepage.aspx", "index" } };

// Backtracking with multiple (.+) groups
yield return new object[] { null, @"(.+)/(.+).aspx", "pages/homepage.aspx", RegexOptions.None, new string[] { "pages/homepage.aspx", "pages", "homepage" } };
yield return new object[] { null, @"(.+)/(.+).aspx", "/pages/homepage.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx", "/pages", "homepage" } };
yield return new object[] { null, @"(.+)/(.+).aspx", "/pages/homepage/index.aspx", RegexOptions.None, new string[] { "/pages/homepage/index.aspx", "/pages/homepage", "index" } };
yield return new object[] { null, @"(.+)/(.+).aspx", "/pages/homepage.aspx/index.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx/index.aspx", "/pages/homepage.aspx", "index" } };
yield return new object[] { null, @"(.+)/(.+)/(.+).aspx", "/pages/homepage.aspx/index.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx/index.aspx", "/pages", "homepage.aspx", "index" } };

// Backtracking with (.+) group followed by (.*)
yield return new object[] { null, @"(.+)/(.*).aspx", "pages/.aspx", RegexOptions.None, new string[] { "pages/.aspx", "pages", string.Empty } };
yield return new object[] { null, @"(.+)/(.*).aspx", "pages/homepage.aspx", RegexOptions.None, new string[] { "pages/homepage.aspx", "pages", "homepage" } };
yield return new object[] { null, @"(.+)/(.*).aspx", "/pages/homepage.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx", "/pages", "homepage" } };
yield return new object[] { null, @"(.+)/(.*).aspx", "/pages/homepage/index.aspx", RegexOptions.None, new string[] { "/pages/homepage/index.aspx", "/pages/homepage", "index" } };
yield return new object[] { null, @"(.+)/(.*).aspx", "/pages/homepage.aspx/index.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx/index.aspx", "/pages/homepage.aspx", "index" } };
yield return new object[] { null, @"(.+)/(.*)/(.*).aspx", "/pages/homepage.aspx/index.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx/index.aspx", "/pages", "homepage.aspx", "index" } };

// Backtracking with (.*) group followed by (.+)
yield return new object[] { null, @"(.*)/(.+).aspx", "/homepage.aspx", RegexOptions.None, new string[] { "/homepage.aspx", string.Empty, "homepage" } };
yield return new object[] { null, @"(.*)/(.+).aspx", "pages/homepage.aspx", RegexOptions.None, new string[] { "pages/homepage.aspx", "pages", "homepage" } };
yield return new object[] { null, @"(.*)/(.+).aspx", "/pages/homepage.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx", "/pages", "homepage" } };
yield return new object[] { null, @"(.*)/(.+).aspx", "/pages/homepage/index.aspx", RegexOptions.None, new string[] { "/pages/homepage/index.aspx", "/pages/homepage", "index" } };
yield return new object[] { null, @"(.*)/(.+).aspx", "/pages/homepage.aspx/index.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx/index.aspx", "/pages/homepage.aspx", "index" } };
yield return new object[] { null, @"(.*)/(.+)/(.+).aspx", "/pages/homepage.aspx/index.aspx", RegexOptions.None, new string[] { "/pages/homepage.aspx/index.aspx", "/pages", "homepage.aspx", "index" } };

// Quantifiers
yield return new object[] { null, @"a*", "", RegexOptions.None, new string[] { "" } };
yield return new object[] { null, @"a*", "a", RegexOptions.None, new string[] { "a" } };
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