iss-182: add tests

Author: ahmad-moussawi

QueryBuilder.Tests/DeleteTests.cs

@@ -0,0 +1,49 @@
+using SqlKata.Compilers;
+using SqlKata.Extensions;
+using SqlKata.Tests.Infrastructure;
+using System;
+using System.Linq;
+using Xunit;
+
+namespace SqlKata.Tests
+{
+    public class DeleteTests : TestSupport
+    {
+        [Fact]
+        public void BasicDelete()
+        {
+            var q = new Query("Posts").AsDelete();
+
+            var c = Compile(q);
+
+            Assert.Equal("DELETE FROM [Posts]", c[EngineCodes.SqlServer]);
+        }
+
+        [Fact]
+        public void DeleteWithJoin()
+        {
+            var q = new Query("Posts")
+                .Join("Authors", "Authors.Id", "Posts.AuthorId")
+                .Where("Authors.Id", 5)
+                .AsDelete();
+
+            var c = Compile(q);
+
+            Assert.Equal("DELETE [Posts] FROM [Posts] \nINNER JOIN [Authors] ON [Authors].[Id] = [Posts].[AuthorId] WHERE [Authors].[Id] = 5", c[EngineCodes.SqlServer]);
+            Assert.Equal("DELETE `Posts` FROM `Posts` \nINNER JOIN `Authors` ON `Authors`.`Id` = `Posts`.`AuthorId` WHERE `Authors`.`Id` = 5", c[EngineCodes.MySql]);
+        }
+
+        [Fact]
+        public void DeleteWithJoinAndAlias()
+        {
+            var q = new Query("Posts as P")
+                .Join("Authors", "Authors.Id", "P.AuthorId")
+                .Where("Authors.Id", 5)
+                .AsDelete();
+
+            var c = Compile(q);
+
+            Assert.Equal("DELETE [P] FROM [Posts] AS [P] \nINNER JOIN [Authors] ON [Authors].[Id] = [P].[AuthorId] WHERE [Authors].[Id] = 5", c[EngineCodes.SqlServer]);
+        }
+    }
+}