Added test for computed index on DateTime column migration

docs/documents/indexing/computed-indexes.md

@@ -34,7 +34,7 @@ using (var session = store.QuerySession())
         .FirstOrDefault(x => x.UserName == "somebody");
 }
 ```
-<sup><a href='https://github.com/JasperFx/marten/blob/master/src/DocumentDbTests/Indexes/computed_indexes.cs#L21-L40' title='Snippet source file'>snippet source</a> | <a href='#snippet-sample_using-a-simple-calculated-index' title='Start of snippet'>anchor</a></sup>
+<sup><a href='https://github.com/JasperFx/marten/blob/master/src/DocumentDbTests/Indexes/computed_indexes.cs#L22-L41' title='Snippet source file'>snippet source</a> | <a href='#snippet-sample_using-a-simple-calculated-index' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 In the configuration shown above, Marten generates a database index in Postgresql:
@@ -55,7 +55,7 @@ var store = DocumentStore.For(_ =>
     _.Schema.For<Target>().Index(x => x.Inner.Color);
 });
 ```
-<sup><a href='https://github.com/JasperFx/marten/blob/master/src/DocumentDbTests/Indexes/computed_indexes.cs#L67-L74' title='Snippet source file'>snippet source</a> | <a href='#snippet-sample_deep-calculated-index' title='Start of snippet'>anchor</a></sup>
+<sup><a href='https://github.com/JasperFx/marten/blob/master/src/DocumentDbTests/Indexes/computed_indexes.cs#L68-L75' title='Snippet source file'>snippet source</a> | <a href='#snippet-sample_deep-calculated-index' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 The configuration above creates an index like this:
@@ -139,5 +139,5 @@ var store = DocumentStore.For(_ =>
     });
 });
 ```
-<sup><a href='https://github.com/JasperFx/marten/blob/master/src/DocumentDbTests/Indexes/computed_indexes.cs#L80-L123' title='Snippet source file'>snippet source</a> | <a href='#snippet-sample_customizing-calculated-index' title='Start of snippet'>anchor</a></sup>
+<sup><a href='https://github.com/JasperFx/marten/blob/master/src/DocumentDbTests/Indexes/computed_indexes.cs#L81-L124' title='Snippet source file'>snippet source</a> | <a href='#snippet-sample_customizing-calculated-index' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->

docs/documents/indexing/unique.md

@@ -225,7 +225,7 @@ var store = DocumentStore.For(_ =>
     });
 });
 ```
-<sup><a href='https://github.com/JasperFx/marten/blob/master/src/DocumentDbTests/Indexes/computed_indexes.cs#L80-L123' title='Snippet source file'>snippet source</a> | <a href='#snippet-sample_customizing-calculated-index' title='Start of snippet'>anchor</a></sup>
+<sup><a href='https://github.com/JasperFx/marten/blob/master/src/DocumentDbTests/Indexes/computed_indexes.cs#L81-L124' title='Snippet source file'>snippet source</a> | <a href='#snippet-sample_customizing-calculated-index' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 Same can be configured for Duplicated Field:

docs/documents/querying/sql.md

@@ -50,7 +50,7 @@ a document body, but in that case you will need to supply the full SQL statement
 var sumResults = await session
     .QueryAsync<int>("select count(*) from mt_doc_target");
 ```
-<sup><a href='https://github.com/JasperFx/marten/blob/master/src/DocumentDbTests/Reading/query_by_sql.cs#L374-L379' title='Snippet source file'>snippet source</a> | <a href='#snippet-sample_query_by_full_sql' title='Start of snippet'>anchor</a></sup>
+<sup><a href='https://github.com/JasperFx/marten/blob/master/src/DocumentDbTests/Reading/query_by_sql.cs#L372-L377' title='Snippet source file'>snippet source</a> | <a href='#snippet-sample_query_by_full_sql' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 When querying single JSONB properties into a primitive/value type, you'll need to cast the value to the respective postgres type:

src/DocumentDbTests/Indexes/computed_indexes.cs

@@ -8,6 +8,7 @@
 using Marten.Testing.Documents;
 using Marten.Testing.Harness;
 using Shouldly;
+using Weasel.Core;
 using Weasel.Postgresql.Tables;
 using Xunit;
 
@@ -167,23 +168,36 @@ public async Task create_multi_property_string_index_with_casing()
         var index = table.IndexFor("mt_doc_target_idx_stringstring_field");
 
         index.ToDDL(table).ShouldBe("CREATE INDEX mt_doc_target_idx_stringstring_field ON computed_indexes.mt_doc_target USING btree (upper((data ->> 'String'), upper((data ->> 'StringField'))));");
-
-
     }
 
     [Fact]
-    public void creating_index_using_date_should_work()
+    public async Task creating_index_using_date_should_work()
     {
         StoreOptions(_ =>
         {
-            _.Schema.For<Target>().Index(x => x.Date);
+            _.Schema.For<ApiResponseRecord>().Index(x => x.RequestTimeUtc);
+            _.AutoCreateSchemaObjects = AutoCreate.All;
         });
+        var diff = await theStore.Storage.Database.ApplyAllConfiguredChangesToDatabaseAsync(AutoCreate.CreateOrUpdate);
 
-        var data = Target.GenerateRandomData(100).ToArray();
-        theStore.BulkInsert(data.ToArray());
+        diff.ShouldBe(SchemaPatchDifference.Create);
 
-    }
+        var table = await theStore.Tenancy.Default.Database.ExistingTableFor(typeof(ApiResponseRecord));
+        var index = table.IndexFor("mt_doc_apiresponserecord_idx_request_time_utc");
+
+        index.ShouldNotBeNull();
+
+        index.ToDDL(table).ShouldBe("CREATE INDEX mt_doc_apiresponserecord_idx_request_time_utc ON computed_indexes.mt_doc_apiresponserecord USING btree (computed_indexes.mt_immutable_timestamp((data ->> 'RequestTimeUtc')));");
 
+        using var otherStore = SeparateStore(_ =>
+        {
+            _.Schema.For<ApiResponseRecord>().Index(x => x.RequestTimeUtc);
+            _.AutoCreateSchemaObjects = AutoCreate.All;
+        });
+
+        var diff2 = await otherStore.Storage.Database.ApplyAllConfiguredChangesToDatabaseAsync(AutoCreate.CreateOrUpdate);
+        diff2.ShouldBe(SchemaPatchDifference.None);
+    }
 
     [Fact]
     public async Task create_index_with_custom_name()
@@ -277,7 +291,13 @@ public async Task create_multi_index_including_collection()
         var index = table.IndexFor("mt_doc_target_idx_user_idstring_list");
 
         index.ToDDL(table).ShouldBe("CREATE INDEX mt_doc_target_idx_user_idstring_list ON computed_indexes.mt_doc_target USING btree (CAST(data ->> 'UserId' as uuid), CAST(data ->> 'StringList' as jsonb));");
-
     }
+}
 
-}
+public class ApiResponseRecord
+{
+    public Guid Id { get; set; }
+    public string Request { get; set; }
+    public string Response { get; set; }
+    public DateTime RequestTimeUtc { get; set; }
+}