create([ 'class_id' => 1, 'class_section_id' => 101, 'class_section_name' => '1-A', 'semester' => 'Fall', 'school_year' => '2025-2026', ]); $this->assertInstanceOf(ClassSection::class, $section); $this->assertDatabaseHas('classSection', ['id' => $section->id]); $updated = $service->update($section, ['class_section_name' => '1-B']); $this->assertSame('1-B', $updated->class_section_name); $deleted = $service->delete($section); $this->assertTrue($deleted); $this->assertDatabaseMissing('classSection', ['id' => $section->id]); } }