should be it

external/duckdb/test/sql/table_function/duckdb_tables.test

@@ -0,0 +1,49 @@
+# name: test/sql/table_function/duckdb_tables.test
+# description: Test duckdb_tables function
+# group: [table_function]
+
+query I
+SELECT COUNT(*) FROM duckdb_tables();
+----
+0
+
+statement ok
+CREATE TABLE integers(i INTEGER)
+
+statement ok
+CREATE TABLE pk(i INTEGER PRIMARY KEY, j VARCHAR, CHECK(i<100))
+
+statement ok
+CREATE SCHEMA myschema;
+
+statement ok
+CREATE TABLE myschema.mytable(k DOUBLE)
+
+statement ok
+CREATE TEMPORARY TABLE mytemp(i INTEGER)
+
+statement ok
+CREATE VIEW v1 AS SELECT 42
+
+query IIIIIIII
+SELECT schema_name, table_name, temporary, has_primary_key, estimated_size, column_count, index_count, check_constraint_count
+FROM duckdb_tables() ORDER BY table_name;
+----
+main	integers	False	False	0	1	0	0
+myschema	mytable	False	False	0	1	0	0
+main	mytemp	True	False	0	1	0	0
+main	pk	False	True	0	2	1	1
+
+query I
+SELECT database_name = current_database() OR database_name = 'temp'
+FROM duckdb_tables();
+----
+True
+True
+True
+True
+
+statement error
+SELECT * FROM temp.duckdb_tables
+----
+main.duckdb_tables