fix: login with uppercase and mixed case role names

PostgREST failed when querying role settings where current
role name contained uppercase letters. This commit resolves
it by quoting the CURRENT_USER.

Signed-off-by: Taimoor Zaeem <taimoorzaeem@gmail.com>

test/io/fixtures/big_schema.sql

@@ -11399,7 +11399,7 @@ $$;
 DROP ROLE IF EXISTS postgrest_test_anonymous;
 CREATE ROLE postgrest_test_anonymous;
 
-GRANT postgrest_test_anonymous TO :PGUSER;
+GRANT postgrest_test_anonymous TO :"PGUSER";
 
 GRANT USAGE ON SCHEMA apflora TO postgrest_test_anonymous;
 GRANT USAGE ON SCHEMA fuzzysearch TO postgrest_test_anonymous;

test/io/fixtures/load.sql

@@ -4,7 +4,7 @@ set check_function_bodies = false; -- to allow conditionals based on the pg vers
 set search_path to public;
 
 CREATE ROLE postgrest_test_anonymous;
-ALTER ROLE :PGUSER SET pgrst.db_anon_role = 'postgrest_test_anonymous';
+ALTER ROLE :"PGUSER" SET pgrst.db_anon_role = 'postgrest_test_anonymous';
 
 CREATE ROLE postgrest_test_author;
 
@@ -21,14 +21,14 @@ alter role postgrest_test_w_superuser_settings set log_min_messages = 'fatal';
 DO $do$BEGIN
   IF (SELECT current_setting('server_version_num')::INT >= 150000) THEN
     ALTER ROLE postgrest_test_w_superuser_settings SET log_min_duration_sample = 12345;
-    GRANT SET ON PARAMETER log_min_duration_sample to postgrest_test_authenticator;
+    GRANT SET ON PARAMETER log_min_duration_sample to "Postgrest_Test_Authenticator";
   END IF;
 END$do$;
 
 GRANT
   postgrest_test_anonymous, postgrest_test_author,
   postgrest_test_serializable, postgrest_test_repeatable_read,
-  postgrest_test_w_superuser_settings TO :PGUSER;
+  postgrest_test_w_superuser_settings TO :"PGUSER";
 
 CREATE SCHEMA v1;
 GRANT USAGE ON SCHEMA v1 TO postgrest_test_anonymous;
@@ -57,7 +57,7 @@ $$ language sql;
 create function change_max_rows_config(val int, notify bool default false) returns void as $_$
 begin
   execute format($$
-    alter role postgrest_test_authenticator set pgrst.db_max_rows = %L;
+    alter role "Postgrest_Test_Authenticator" set pgrst.db_max_rows = %L;
   $$, val);
   if notify then
     perform pg_notify('pgrst', 'reload config');
@@ -66,13 +66,13 @@ end $_$ volatile security definer language plpgsql ;
 
 create function reset_max_rows_config() returns void as $_$
 begin
-  alter role postgrest_test_authenticator reset pgrst.db_max_rows;
+  alter role "Postgrest_Test_Authenticator" reset pgrst.db_max_rows;
 end $_$ volatile security definer language plpgsql ;
 
 create function change_db_schema_and_full_reload(schemas text) returns void as $_$
 begin
   execute format($$
-    alter role postgrest_test_authenticator set pgrst.db_schemas = %L;
+    alter role "Postgrest_Test_Authenticator" set pgrst.db_schemas = %L;
   $$, schemas);
   perform pg_notify('pgrst', 'reload config');
   perform pg_notify('pgrst', 'reload schema');
@@ -80,14 +80,14 @@ end $_$ volatile security definer language plpgsql ;
 
 create function v1.reset_db_schema_config() returns void as $_$
 begin
-  alter role postgrest_test_authenticator reset pgrst.db_schemas;
+  alter role "Postgrest_Test_Authenticator" reset pgrst.db_schemas;
   perform pg_notify('pgrst', 'reload config');
   perform pg_notify('pgrst', 'reload schema');
 end $_$ volatile security definer language plpgsql ;
 
 create function invalid_role_claim_key_reload() returns void as $_$
 begin
-  alter role postgrest_test_authenticator set pgrst.jwt_role_claim_key = 'test';
+  alter role "Postgrest_Test_Authenticator" set pgrst.jwt_role_claim_key = 'test';
   perform pg_notify('pgrst', 'reload config');
 end $_$ volatile security definer language plpgsql ;
 
@@ -100,7 +100,7 @@ $_$ language sql;
 
 create function reset_invalid_role_claim_key() returns void as $_$
 begin
-  alter role postgrest_test_authenticator reset pgrst.jwt_role_claim_key;
+  alter role "Postgrest_Test_Authenticator" reset pgrst.jwt_role_claim_key;
   perform pg_notify('pgrst', 'reload config');
 end $_$ volatile security definer language plpgsql ;
 
@@ -235,12 +235,12 @@ $$ language sql;
 
 create function change_db_schemas_config() returns void as $_$
 begin
-  alter role postgrest_test_authenticator set pgrst.db_schemas = 'test';
+  alter role "Postgrest_Test_Authenticator" set pgrst.db_schemas = 'test';
 end $_$ volatile security definer language plpgsql;
 
 create function reset_db_schemas_config() returns void as $_$
 begin
-  alter role postgrest_test_authenticator reset pgrst.db_schemas;
+  alter role "Postgrest_Test_Authenticator" reset pgrst.db_schemas;
 end $_$ volatile security definer language plpgsql ;
 
 create function test.get_current_schema() returns text as $$

test/io/fixtures/replica.sql

@@ -13,7 +13,7 @@ create table replica.items as select x as id from generate_series(1, 10) x;
 DROP ROLE IF EXISTS postgrest_test_anonymous;
 CREATE ROLE postgrest_test_anonymous;
 
-GRANT postgrest_test_anonymous TO :PGUSER;
+GRANT postgrest_test_anonymous TO :"PGUSER";
 
 GRANT USAGE ON SCHEMA replica TO postgrest_test_anonymous;
 

test/load/fixtures.sql

@@ -1,7 +1,7 @@
 CREATE ROLE postgrest_test_anonymous;
 CREATE ROLE postgrest_test_author;
-GRANT postgrest_test_anonymous TO :PGUSER;
-GRANT postgrest_test_author TO :PGUSER;
+GRANT postgrest_test_anonymous TO :"PGUSER";
+GRANT postgrest_test_author TO :"PGUSER";
 CREATE SCHEMA test;
 
 -- PUT+PATCH target needs one record and column to modify

test/observability/fixtures/roles.sql

@@ -2,4 +2,4 @@ DROP ROLE IF EXISTS postgrest_test_anonymous, postgrest_test_author;
 CREATE ROLE postgrest_test_anonymous;
 CREATE ROLE postgrest_test_author;
 
-GRANT postgrest_test_anonymous, postgrest_test_author TO :PGUSER;
+GRANT postgrest_test_anonymous, postgrest_test_author TO :"PGUSER";

test/spec/fixtures/roles.sql

@@ -4,4 +4,4 @@ CREATE ROLE postgrest_test_default_role;
 CREATE ROLE postgrest_test_author;
 CREATE ROLE postgrest_test_superuser WITH SUPERUSER;
 
-GRANT postgrest_test_anonymous, postgrest_test_default_role, postgrest_test_author, postgrest_test_superuser TO :PGUSER;
+GRANT postgrest_test_anonymous, postgrest_test_default_role, postgrest_test_author, postgrest_test_superuser TO :"PGUSER";