Implement comments

migra/changes.py

@@ -21,6 +21,7 @@ THINGS = [
     "collations",
     "rlspolicies",
     "triggers",
+    "comments",
 ]
 PK = "PRIMARY KEY"
 

migra/migra.py

@@ -111,6 +111,7 @@ class Migration(object):
         self.add(self.changes.rlspolicies(creations_only=True))
         self.add(self.changes.triggers(creations_only=True))
         self.add(self.changes.collations(drops_only=True))
+        self.add(self.changes.comments(creations_only=True))
         self.add(self.changes.schemas(drops_only=True))
 
     @property

tests/FIXTURES/comments/a.sql

@@ -0,0 +1 @@
+create table example0 (a int);

tests/FIXTURES/comments/b.sql

@@ -0,0 +1,5 @@
+create table example (a int);
+
+comment on table example is 'Example table';
+
+comment on column example.a is 'Example column';

tests/FIXTURES/comments/expected.sql

@@ -0,0 +1,10 @@
+drop table "public"."example0";
+
+create table "public"."example" (
+    "a" integer
+);
+
+
+comment on column "public"."example"."a" is 'Example column';
+
+comment on table "public"."example" is 'Example table';

tests/test_migra.py

@@ -61,6 +61,7 @@ def test_singleschema_ext():
 
 fixtures = """\
 everything
+comments
 collations
 identitycols
 partitioning