Unit tests, part 1

test/Microsoft.SqlTools.ServiceLayer.Test/QueryExecution/ExecuteTests.cs

@@ -1,24 +1,35 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.SqlServer.Management.SqlParser.MetadataProvider;
+using System.Collections.ObjectModel;
+using System.Data;
+using System.Data.Common;
 using Microsoft.SqlTools.ServiceLayer.Connection;
 using Microsoft.SqlTools.ServiceLayer.Connection.Contracts;
 using Microsoft.SqlTools.ServiceLayer.QueryExecution;
-using Microsoft.SqlTools.Test.Utility;
+using Microsoft.SqlTools.ServiceLayer.QueryExecution.Contracts;
+using Microsoft.SqlTools.ServiceLayer.Test.Utility;
 using Moq;
+using Moq.Protected;
 using Xunit;
 
 namespace Microsoft.SqlTools.ServiceLayer.Test.QueryExecution
 {
     public class ExecuteTests
     {
+        private static Dictionary<string, string>[] testData = 
+        {
+            new Dictionary<string, string> { {"col1", "val11"}, { "col2", "val12"}, { "col3", "val13"}, { "col4", "col14"} },
+            new Dictionary<string, string> { {"col1", "val21"}, { "col2", "val22"}, { "col3", "val23"}, { "col4", "col24"} },
+            new Dictionary<string, string> { {"col1", "val31"}, { "col2", "val32"}, { "col3", "val33"}, { "col4", "col34"} },
+            new Dictionary<string, string> { {"col1", "val41"}, { "col2", "val42"}, { "col3", "val43"}, { "col4", "col44"} },
+            new Dictionary<string, string> { {"col1", "val51"}, { "col2", "val52"}, { "col3", "val53"}, { "col4", "col54"} },
+        };
+
         [Fact]
         public void QueryCreationTest()
         {
             // If I create a new query...
-            Query query = new Query("NO OP", CreateTestConnectionInfo());
+            Query query = new Query("NO OP", CreateTestConnectionInfo(null));
 
             // Then: 
             // ... It should not have executed
@@ -29,7 +40,173 @@ namespace Microsoft.SqlTools.ServiceLayer.Test.QueryExecution
             Assert.Empty(query.ResultSummary);
         }
 
-        private static ConnectionInfo CreateTestConnectionInfo()
+        [Fact]
+        public void QueryExecuteNoResultSets()
+        {
+            // If I execute a query that should get no result sets
+            Query query = new Query("Query with no result sets", CreateTestConnectionInfo(null));
+            query.Execute().Wait();
+
+            // Then:
+            // ... It should have executed
+            Assert.True(query.HasExecuted, "The query should have been marked executed.");
+            
+            // ... The results should be empty
+            Assert.Empty(query.ResultSets);
+            Assert.Empty(query.ResultSummary);
+
+            // ... The results should not be null
+            Assert.NotNull(query.ResultSets);
+            Assert.NotNull(query.ResultSummary);
+        }
+
+        [Fact]
+        public void QueryExecuteQueryOneResultSet()
+        {
+            ConnectionInfo ci = CreateTestConnectionInfo(new[] {testData});
+
+            // If I execute a query that should get one result set
+            int resultSets = 1;
+            int rows = 5;
+            int columns = 4;
+            Query query = new Query("Query with one result sets", ci);
+            query.Execute().Wait();
+
+            // Then:
+            // ... It should have executed
+            Assert.True(query.HasExecuted, "The query should have been marked executed.");
+
+            // ... There should be exactly one result set
+            Assert.Equal(resultSets, query.ResultSets.Count);
+
+            // ... Inside the result set should be with 5 rows
+            Assert.Equal(rows, query.ResultSets[0].Rows.Count);
+
+            // ... Inside the result set should have 5 columns and 5 column definitions
+            Assert.Equal(columns, query.ResultSets[0].Rows[0].Length);
+            Assert.Equal(columns, query.ResultSets[0].Columns.Length);
+
+            // ... There should be exactly one result set summary
+            Assert.Equal(resultSets, query.ResultSummary.Length);
+
+            // ... Inside the result summary, there should be 5 column definitions
+            Assert.Equal(columns, query.ResultSummary[0].ColumnInfo.Length);
+
+            // ... Inside the result summary, there should be 5 rows
+            Assert.Equal(rows, query.ResultSummary[0].RowCount);
+        }
+
+        [Fact]
+        public void QueryExecuteQueryTwoResultSets()
+        {
+            var dataset = new[] {testData, testData};
+            int resultSets = dataset.Length;
+            int rows = testData.Length;
+            int columns = testData[0].Count;
+            ConnectionInfo ci = CreateTestConnectionInfo(dataset);
+
+            // If I execute a query that should get two result sets
+            Query query = new Query("Query with two result sets", ci);
+            query.Execute().Wait();
+
+            // Then:
+            // ... It should have executed
+            Assert.True(query.HasExecuted, "The query should have been marked executed.");
+
+            // ... There should be exactly two result sets
+            Assert.Equal(resultSets, query.ResultSets.Count);
+
+            foreach (ResultSet rs in query.ResultSets)
+            {
+                // ... Each result set should have 5 rows
+                Assert.Equal(rows, rs.Rows.Count);
+
+                // ... Inside each result set should be 5 columns and 5 column definitions
+                Assert.Equal(columns, rs.Rows[0].Length);
+                Assert.Equal(columns, rs.Columns.Length);
+            }
+
+            // ... There should be exactly two result set summaries
+            Assert.Equal(resultSets, query.ResultSummary.Length);
+
+            foreach (ResultSetSummary rs in query.ResultSummary)
+            {
+                // ... Inside each result summary, there should be 5 column definitions
+                Assert.Equal(columns, rs.ColumnInfo.Length);
+
+                // ... Inside each result summary, there should be 5 rows
+                Assert.Equal(rows, rs.RowCount);
+            }
+        }
+
+        #region Mocking
+
+        //private static DbDataReader CreateTestReader(int columnCount, int rowCount)
+        //{
+        //    var readerMock = new Mock<DbDataReader> { CallBase = true };
+
+        //    // Setup for column reads
+        //    // TODO: We can't test columns because of oddities with how datatable/GetColumn
+
+        //    // Setup for row reads
+        //    var readSequence = readerMock.SetupSequence(dbReader => dbReader.Read());
+        //    for (int i = 0; i < rowCount; i++)
+        //    {
+        //        readSequence.Returns(true);
+        //    }
+        //    readSequence.Returns(false);
+
+        //    // Make sure that if we call for data from the reader it works
+        //    readerMock.Setup(dbReader => dbReader[InColumnRange(columnCount)])
+        //        .Returns<object>(i => i.ToString());
+        //    readerMock.Setup(dbReader => dbReader[NotInColumnRange(columnCount)])
+        //        .Throws(new ArgumentOutOfRangeException());
+        //    readerMock.Setup(dbReader => dbReader.HasRows)
+        //        .Returns(rowCount > 0);
+
+        //    return readerMock.Object;
+        //}
+
+        //private static int InColumnRange(int columnCount)
+        //{
+        //    return Match.Create<int>(i => i < columnCount && i > 0);
+        //}
+
+        //private static int NotInColumnRange(int columnCount)
+        //{
+        //    return Match.Create<int>(i => i >= columnCount || i < 0);
+        //}
+
+        private static DbCommand CreateTestCommand(Dictionary<string, string>[][] data)
+        {
+            var commandMock = new Mock<DbCommand> {CallBase = true};
+            commandMock.Protected()
+                .Setup<DbDataReader>("ExecuteDbDataReader", It.IsAny<CommandBehavior>())
+                .Returns(new TestDbDataReader(data));
+
+            return commandMock.Object;
+        }
+
+        private static DbConnection CreateTestConnection(Dictionary<string, string>[][] data)
+        {
+            var connectionMock = new Mock<DbConnection> {CallBase = true};
+            connectionMock.Protected()
+                .Setup<DbCommand>("CreateDbCommand")
+                .Returns(CreateTestCommand(data));
+
+            return connectionMock.Object;
+        }
+
+        private static ISqlConnectionFactory CreateMockFactory(Dictionary<string, string>[][] data)
+        {
+            var mockFactory = new Mock<ISqlConnectionFactory>();
+            mockFactory.Setup(factory => factory.CreateSqlConnection(It.IsAny<string>()))
+                .Returns(CreateTestConnection(data));
+
+            return mockFactory.Object;
+        }
+
+        private static ConnectionInfo CreateTestConnectionInfo(Dictionary<string, string>[][] data)
         {
             // Create connection info
             ConnectionDetails connDetails = new ConnectionDetails
@@ -40,15 +217,9 @@ namespace Microsoft.SqlTools.ServiceLayer.Test.QueryExecution
                 ServerName = "sqltools11"
             };
 
-#if !USE_LIVE_CONNECTION
-            // Use the mock db connection factory
-            ISqlConnectionFactory factory = new TestSqlConnectionFactory();
-#else
-            // Use a real db connection factory
-            ISqlConnectionFactory factory = new SqlConnectionFactory();
-#endif
-
-            return new ConnectionInfo(factory, "test://test", connDetails);
+            return new ConnectionInfo(CreateMockFactory(data), "test://test", connDetails);
         }
+
+        #endregion
     }
 }