Improved tests of string operations' compilers

Also moved String members compiler tests from Linq.SelectTest to proper
class

Author: alex-kulakov

Orm/Xtensive.Orm.Tests/Linq/SelectTest.cs

@@ -768,118 +768,6 @@ where invoice.InvoiceId > 0 && invoice.InvoiceId < 50
       }
     }
 
-    [Test]
-    public void SelectStringIndexerTest()
-    {
-      var result =
-        Session.Query.All<Customer>()
-          .Select(c => new {
-            String = c.CustomerId,
-            Char0 = c.Email[0],
-            Char1 = c.Email[1],
-            Char2 = c.Email[2],
-            Char3 = c.Email[3],
-            Char4 = c.Email[4],
-          })
-          .ToArray()
-          .OrderBy(item => item.String)
-          .ToArray();
-      var expected = Customers
-          .Select(c => new {
-            String = c.CustomerId,
-            Char0 = c.Email[0],
-            Char1 = c.Email[1],
-            Char2 = c.Email[2],
-            Char3 = c.Email[3],
-            Char4 = c.Email[4],
-          })
-          .OrderBy(item => item.String)
-          .ToArray();
-      Assert.AreEqual(expected.Length, result.Length);
-      for (var i = 0; i < expected.Length; i++) {
-        Assert.AreEqual(expected[0].String, result[0].String);
-        Assert.AreEqual(expected[0].Char0, result[0].Char0);
-        Assert.AreEqual(expected[0].Char1, result[0].Char1);
-        Assert.AreEqual(expected[0].Char2, result[0].Char2);
-        Assert.AreEqual(expected[0].Char3, result[0].Char3);
-        Assert.AreEqual(expected[0].Char4, result[0].Char4);
-      }
-    }
-
-    [Test]
-    public void SelectIndexOfTest()
-    {
-      var _char = 'A';
-      var result =
-        Session.Query.All<Customer>()
-          .Select(c => new {
-            String = c.FirstName,
-            IndexOfChar = c.FirstName.IndexOf(_char),
-            IndexOfCharStart = c.FirstName.IndexOf(_char, 1),
-            IndexOfCharStartCount = c.FirstName.IndexOf(_char, 1, 1),
-            IndexOfString = c.FirstName.IndexOf(_char.ToString()),
-            IndexOfStringStart = c.FirstName.IndexOf(_char.ToString(), 1),
-            IndexOfStringStartCount = c.FirstName.IndexOf(_char.ToString(), 1, 1)
-          })
-          .ToArray()
-          .OrderBy(item => item.String)
-          .ToArray();
-      var expected = Customers
-          .Select(c => new {
-            String = c.FirstName,
-            IndexOfChar = c.FirstName.IndexOf(_char),
-            IndexOfCharStart = c.FirstName.IndexOf(_char, 1),
-            IndexOfCharStartCount = c.FirstName.IndexOf(_char, 1, 1),
-            IndexOfString = c.FirstName.IndexOf(_char.ToString()),
-            IndexOfStringStart = c.FirstName.IndexOf(_char.ToString(), 1),
-            IndexOfStringStartCount = c.FirstName.IndexOf(_char.ToString(), 1, 1)
-          })
-          .OrderBy(item => item.String)
-          .ToArray();
-      Assert.AreEqual(expected.Length, result.Length);
-      for (var i = 0; i < expected.Length; i++) {
-        Assert.AreEqual(expected[i].String, result[i].String);
-        Assert.AreEqual(expected[i].IndexOfChar, result[i].IndexOfChar);
-        Assert.AreEqual(expected[i].IndexOfCharStart, result[i].IndexOfCharStart);
-        Assert.AreEqual(expected[i].IndexOfCharStartCount, result[i].IndexOfCharStartCount);
-        Assert.AreEqual(expected[i].IndexOfString, result[i].IndexOfString);
-        Assert.AreEqual(expected[i].IndexOfStringStart, result[i].IndexOfStringStart);
-        Assert.AreEqual(expected[i].IndexOfStringStartCount, result[i].IndexOfStringStartCount);
-      }
-    }
-
-    [Test]
-    public void SelectStringContainsTest1()
-    {
-      Require.ProviderIs(StorageProvider.Sqlite | StorageProvider.SqlServer | StorageProvider.MySql);
-      var result =
-        Session.Query.All<Customer>()
-          .Where(c => c.FirstName.Contains('L'))
-          .OrderBy(c => c.CustomerId)
-          .ToArray();
-      var expected = Customers
-          .Where(c => c.FirstName.Contains('L') || c.FirstName.Contains('l'))
-          .OrderBy(c => c.CustomerId)
-          .ToArray();
-      Assert.IsTrue(expected.SequenceEqual(result));
-    }
-
-    [Test]
-    public void SelectStringContainsTest2()
-    {
-      Require.ProviderIsNot(StorageProvider.Sqlite | StorageProvider.SqlServer | StorageProvider.MySql);
-      var result =
-        Session.Query.All<Customer>()
-          .Where(c => c.FirstName.Contains('L'))
-          .OrderBy(c => c.CustomerId)
-          .ToArray();
-      var expected = Customers
-          .Where(c => c.FirstName.Contains('L'))
-          .OrderBy(c => c.CustomerId)
-          .ToArray();
-      Assert.IsTrue(expected.SequenceEqual(result));
-    }
-
     [Test]
     public void SelectDateTimeTimeSpanTest()
     {