Added string to Postgre default value

Author: JaBistDuNarrisch

src/Migrator.Tests/Providers/PostgreSQL/PostgreSQLTransformationProvider_GetColumnsDefaultValueTests.cs

@@ -29,7 +29,6 @@ public void GetColumns_DataTypeResolveSucceeds()
         const string int32ColumnName1 = "int32column1";
         const string int64ColumnName1 = "int64column1";
         const string stringColumnName1 = "stringcolumn1";
-        const string stringColumnName2 = "stringcolumn2";
 
         // Should be extended by remaining types
         Provider.AddTable(testTableName,
@@ -41,10 +40,9 @@ public void GetColumns_DataTypeResolveSucceeds()
             // other boolean default values are tested in another test
             new Column(booleanColumnName1, DbType.Boolean, true),
 
-            new Column(int32ColumnName1, DbType.Int32, 43),
-            new Column(int64ColumnName1, DbType.Int64, 88),
-            new Column(stringColumnName1, DbType.String),
-            new Column(stringColumnName2, DbType.String) { Size = 30 }
+            new Column(int32ColumnName1, DbType.Int32, defaultValue: 43),
+            new Column(int64ColumnName1, DbType.Int64, defaultValue: 88),
+            new Column(stringColumnName1, DbType.String, defaultValue: "Hello")
         );
 
         // Act
@@ -59,7 +57,6 @@ public void GetColumns_DataTypeResolveSucceeds()
         var int32Column1 = columns.Single(x => x.Name == int32ColumnName1);
         var int64Column1 = columns.Single(x => x.Name == int64ColumnName1);
         var stringColumn1 = columns.Single(x => x.Name == stringColumnName1);
-        var stringColumn2 = columns.Single(x => x.Name == stringColumnName2);
 
         Assert.That(dateTimeColumn1.DefaultValue, Is.EqualTo(dateTimeDefaultValue));
         Assert.That(dateTimeColumn2.DefaultValue, Is.EqualTo(dateTimeDefaultValue));
@@ -68,5 +65,6 @@ public void GetColumns_DataTypeResolveSucceeds()
         Assert.That(booleanColumn1.DefaultValue, Is.True);
         Assert.That(int32Column1.DefaultValue, Is.EqualTo(43));
         Assert.That(int64Column1.DefaultValue, Is.EqualTo(88));
+        Assert.That(stringColumn1.DefaultValue, Is.EqualTo("Hello"));
     }
 }

src/Migrator/Providers/Impl/PostgreSQL/PostgreSQLTransformationProvider.cs

@@ -391,15 +391,15 @@ public override Column[] GetColumns(string table)
                 {
                     if (column.Type == DbType.Int16 || column.Type == DbType.Int32 || column.Type == DbType.Int64)
                     {
-                        column.DefaultValue = long.Parse(column.DefaultValue.ToString());
+                        column.DefaultValue = long.Parse(defaultValueString.ToString());
                     }
                     else if (column.Type == DbType.UInt16 || column.Type == DbType.UInt32 || column.Type == DbType.UInt64)
                     {
-                        column.DefaultValue = ulong.Parse(column.DefaultValue.ToString());
+                        column.DefaultValue = ulong.Parse(defaultValueString.ToString());
                     }
                     else if (column.Type == DbType.Double || column.Type == DbType.Single)
                     {
-                        column.DefaultValue = double.Parse(column.DefaultValue.ToString());
+                        column.DefaultValue = double.Parse(defaultValueString.ToString());
                     }
                     else if (column.Type == DbType.Boolean)
                     {
@@ -464,6 +464,28 @@ public override Column[] GetColumns(string table)
                     {
                         column.DefaultValue = decimal.Parse(defaultValueString, CultureInfo.InvariantCulture);
                     }
+                    else if (column.Type == DbType.String)
+                    {
+                        if (defaultValueString.StartsWith("'"))
+                        {
+                            var match = stripSingleQuoteRegEx.Match(defaultValueString);
+
+                            if (!match.Success)
+                            {
+                                throw new Exception("Postgre default value for date time: We expected single quotes around the date time string.");
+                            }
+
+                            column.DefaultValue = match.Value;
+                        }
+                        else
+                        {
+                            throw new NotImplementedException();
+                        }
+                    }
+                    else
+                    {
+                        throw new NotImplementedException();
+                    }
                 }
 
                 columns.Add(column);

src/Migrator/Providers/TransformationProvider.cs

@@ -1784,6 +1784,14 @@ public virtual List<string> GetPrimaryKeys(IEnumerable<Column> columns)
 
     public virtual void AddColumnDefaultValue(string table, string column, object defaultValue)
     {
+        if (defaultValue is DateTime defaultValueDateTime)
+        {
+            if (defaultValueDateTime.Kind != DateTimeKind.Utc)
+            {
+                throw new Exception("We only accept UTC values as default DateTime values.");
+            }
+        }
+
         table = QuoteTableNameIfRequired(table);
         column = this.QuoteColumnNameIfRequired(column);
         var def = Dialect.Default(defaultValue);