fix(test): use explicit schema parameter instead of db.Schema() for PostgreSQL/GaussDB tests

In GoFrame, db.Schema() changes the database name, not the PostgreSQL/GaussDB
schema (namespace). For proper schema support, use db.Tables(ctx, schema)
parameter instead.

This fixes CI test failures where db.Schema("test_schema") was trying to
connect to a non-existent database named "test_schema".

Author: lingcoder

contrib/drivers/gaussdb/gaussdb_z_unit_issue_test.go

@@ -305,16 +305,16 @@ func Test_Issue4495_CacheIsolation(t *testing.T) {
 	}
 
 	gtest.C(t, func(t *gtest.T) {
-		// Get tables from schema1
-		db1 := db.Schema(schema1)
-		tables1, err := db1.Tables(ctx)
+		// Get tables from schema1 using explicit schema parameter
+		// Note: db.Schema() in GoFrame changes database name, not GaussDB schema.
+		// For GaussDB schema support, we use db.Tables(ctx, schema) parameter.
+		tables1, err := db.Tables(ctx, schema1)
 		t.AssertNil(err)
 		t.Assert(gstr.InArray(tables1, table1), true)
 		t.Assert(gstr.InArray(tables1, table2), false)
 
 		// Get tables from schema2 - should NOT return schema1's cached result
-		db2 := db.Schema(schema2)
-		tables2, err := db2.Tables(ctx)
+		tables2, err := db.Tables(ctx, schema2)
 		t.AssertNil(err)
 		t.Assert(gstr.InArray(tables2, table2), true)
 		t.Assert(gstr.InArray(tables2, table1), false)
@@ -373,7 +373,9 @@ func Test_Issue4495_TableFields_KeyConstraints(t *testing.T) {
 }
 
 // https://github.com/gogf/gf/issues/4495
-// Test Tables() with Namespace configuration.
+// Test Tables() with explicit schema parameter.
+// Note: In GaussDB (like PostgreSQL), db.Schema() changes the database name, not the schema.
+// For GaussDB schema support, use db.Tables(ctx, schema) parameter instead.
 func Test_Issue4495_Tables_WithNamespace(t *testing.T) {
 	var (
 		schema = fmt.Sprintf("test_ns_schema_%d", gtime.TimestampNano())
@@ -393,9 +395,8 @@ func Test_Issue4495_Tables_WithNamespace(t *testing.T) {
 	}
 
 	gtest.C(t, func(t *gtest.T) {
-		// Create a new db instance with Schema method
-		dbWithSchema := db.Schema(schema)
-		tables, err := dbWithSchema.Tables(ctx)
+		// Use explicit schema parameter to get tables from specific schema
+		tables, err := db.Tables(ctx, schema)
 		t.AssertNil(err)
 		t.Assert(gstr.InArray(tables, table), true)
 	})

contrib/drivers/pgsql/pgsql_z_unit_issue_test.go

@@ -580,16 +580,16 @@ func Test_Issue4495_CacheIsolation(t *testing.T) {
 	}
 
 	gtest.C(t, func(t *gtest.T) {
-		// Get tables from schema1
-		db1 := db.Schema(schema1)
-		tables1, err := db1.Tables(ctx)
+		// Get tables from schema1 using explicit schema parameter
+		// Note: db.Schema() in GoFrame changes database name, not PostgreSQL schema.
+		// For PostgreSQL schema support, we use db.Tables(ctx, schema) parameter.
+		tables1, err := db.Tables(ctx, schema1)
 		t.AssertNil(err)
 		t.Assert(gstr.InArray(tables1, table1), true)
 		t.Assert(gstr.InArray(tables1, table2), false)
 
 		// Get tables from schema2 - should NOT return schema1's cached result
-		db2 := db.Schema(schema2)
-		tables2, err := db2.Tables(ctx)
+		tables2, err := db.Tables(ctx, schema2)
 		t.AssertNil(err)
 		t.Assert(gstr.InArray(tables2, table2), true)
 		t.Assert(gstr.InArray(tables2, table1), false)
@@ -699,7 +699,9 @@ func Test_Issue4495_TableFields_FieldTypes(t *testing.T) {
 }
 
 // https://github.com/gogf/gf/issues/4495
-// Test Tables() with Namespace configuration.
+// Test Tables() with explicit schema parameter.
+// Note: In PostgreSQL, db.Schema() changes the database name, not the PostgreSQL schema.
+// For PostgreSQL schema support, use db.Tables(ctx, schema) parameter instead.
 func Test_Issue4495_Tables_WithNamespace(t *testing.T) {
 	var (
 		schema = fmt.Sprintf("test_ns_schema_%d", gtime.TimestampNano())
@@ -719,10 +721,8 @@ func Test_Issue4495_Tables_WithNamespace(t *testing.T) {
 	}
 
 	gtest.C(t, func(t *gtest.T) {
-		// Create a new db instance with Namespace config
-		// Note: This tests that Schema() method works correctly
-		dbWithSchema := db.Schema(schema)
-		tables, err := dbWithSchema.Tables(ctx)
+		// Use explicit schema parameter to get tables from specific schema
+		tables, err := db.Tables(ctx, schema)
 		t.AssertNil(err)
 		t.Assert(gstr.InArray(tables, table), true)
 	})