Fix `primary_keys` across multiple schemas

Fixes #28470.

1 files changed, 2 insertions, 1 deletions

diff --git a/activerecord/test/cases/adapters/postgresql/schema_test.rb b/activerecord/test/cases/adapters/postgresql/schema_test.rb
index 7b065ff320..75e30e4fe9 100644
--- a/activerecord/test/cases/adapters/postgresql/schema_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/schema_test.rb
@@ -91,6 +91,7 @@ class SchemaTest < ActiveRecord::PostgreSQLTestCase
     @connection.execute "CREATE INDEX #{INDEX_E_NAME} ON #{SCHEMA_NAME}.#{TABLE_NAME}  USING gin (#{INDEX_E_COLUMN});"
     @connection.execute "CREATE INDEX #{INDEX_E_NAME} ON #{SCHEMA2_NAME}.#{TABLE_NAME}  USING gin (#{INDEX_E_COLUMN});"
     @connection.execute "CREATE TABLE #{SCHEMA_NAME}.#{PK_TABLE_NAME} (id serial primary key)"
+    @connection.execute "CREATE TABLE #{SCHEMA2_NAME}.#{PK_TABLE_NAME} (id serial primary key)"
     @connection.execute "CREATE SEQUENCE #{SCHEMA_NAME}.#{UNMATCHED_SEQUENCE_NAME}"
     @connection.execute "CREATE TABLE #{SCHEMA_NAME}.#{UNMATCHED_PK_TABLE_NAME} (id integer NOT NULL DEFAULT nextval('#{SCHEMA_NAME}.#{UNMATCHED_SEQUENCE_NAME}'::regclass), CONSTRAINT unmatched_pkey PRIMARY KEY (id))"
   end
@@ -361,7 +362,7 @@ class SchemaTest < ActiveRecord::PostgreSQLTestCase
   end
 
   def test_primary_key_assuming_schema_search_path
-    with_schema_search_path(SCHEMA_NAME) do
+    with_schema_search_path("#{SCHEMA_NAME}, #{SCHEMA2_NAME}") do
       assert_equal "id", @connection.primary_key(PK_TABLE_NAME), "primary key should be found"
     end
   end