fix(table): Allow renaming column support. (#228)

* fix(table): Allow renaming column support.

Support for renaming columns was added in 3.25.0

https://sqlite.org/releaselog/3_25_0.html

Author: jalcine

lib/sqlite_ecto/connection.ex

@@ -632,8 +632,9 @@ if Code.ensure_loaded?(Sqlitex.Server) do
         " RENAME TO ", quote_table(nil, new_table.name)]]
     end
 
-    def execute_ddl({:rename, %Table{}, _old_col, _new_col}) do
-      raise ArgumentError, "RENAME COLUMN not supported by SQLite"
+    def execute_ddl({:rename, %Table{} = current_table, old_col, new_col}) do
+      [["ALTER TABLE ", quote_table(current_table.prefix, current_table.name),
+        " RENAME COLUMN ", quote_name(old_col), " TO ", quote_name(new_col)]]
     end
 
     def execute_ddl({command, %Constraint{}})

test/sqlite_ecto_test.exs

@@ -1265,16 +1265,12 @@ defmodule Sqlite.Ecto2.Test do
 
   test "rename column" do
     rename = {:rename, table(:posts), :given_name, :first_name}
-    assert_raise ArgumentError, "RENAME COLUMN not supported by SQLite", fn ->
-      execute_ddl(rename)
-    end
+    assert execute_ddl(rename) == [~s|ALTER TABLE "posts" RENAME COLUMN "given_name" TO "first_name"|]
   end
 
   test "rename column in prefixed table" do
     rename = {:rename, table(:posts, prefix: :foo), :given_name, :first_name}
-    assert_raise ArgumentError, "RENAME COLUMN not supported by SQLite", fn ->
-      execute_ddl(rename)
-    end
+    assert execute_ddl(rename) == [~s|ALTER TABLE "foo"."posts" RENAME COLUMN "given_name" TO "first_name"|]
   end
 
   test "drop column errors" do