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All Journal IJCCS (Indonesian Journal of Computing and Cybernetics Systems) TEKNIK INFORMATIKA Jurnal Ilmiah Informatika Komputer Jurnal Ilmiah Teknologi dan Rekayasa TEKNOLOGI INFORMASI Jurnal Teknologi Informasi dan Ilmu Komputer Jurnal Ilmiah KOMPUTASI CogITo Smart Journal Jurnal Ilmiah Matrik Dinasti International Journal of Management Science Media Informatika Jurnal Teknik Informatika (JUTIF) International Journal of Management Science and Information Technology (IJMSIT) Jurnal Pengabdian Kepada Masyarakat Darma Saskara Jurnal Ilmiah Teknologi dan Komputer (JITTER)
Ana Kurniawati
Universitas Gunadarma
Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Social Sciences Other

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Shift-Left Testing in the Software Testing Life Cycle: Evidence from the Ruang Murid Application on Time Efficiency and Software Quality Agung Enrico; Ana Kurniawati
International Journal of Management Science and Information Technology Vol. 6 No. 1 (2026): January - June 2026
Publisher : Lembaga Komunitas Informasi Teknologi Aceh (KITA), Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/ijmsit.v6i1.6610

Abstract

This study investigates the implementation of Shift-Left Testing within the Software Testing Life Cycle (STLC) and its implications for testing time efficiency and software quality in the Ruang Murid application. A quantitative case study design was applied using testing records, observation, documentation, and questionnaire data collected from the development team, including Software Quality Assurance staff, developers, and the project manager. Data were analysed using SPSS through validity and reliability testing, multiple linear regression, t-tests, F-tests, and coefficient of determination analysis. The results show that after the adoption of Shift-Left Testing, the number of detected bugs increased by 54.39%, indicating broader and earlier defect discovery during the development cycle rather than a decline in product quality. Bug rate rose from 1.9 to 2.9 bugs per KLOC, while defect rate increased from 4.2% to 7.1%, both of which remained within acceptable quality thresholds. In addition, defect leakage was recorded at 10.37%, test coverage and test execution rate each reached 100%, and the test case pass rate was 50.51%. These findings suggest that the earlier involvement of the SQA team improved defect visibility, expanded testing coverage, and strengthened quality control across development stages, although further improvements are still needed to increase pass stability and overall testing confidence.
Co-Authors Aditya Yafi Pramudya Adrianto, Ananda Andra Agung Enrico Anggriani, Fadhilah Ardiansyah Ardiansyah Dede Iskandar, Dede Dina Agustin Dina Anggraini Haura, Aniqoh Hana Irawati, Dyah Cita Jauhari, Amrin Fakhruddin Kastilia, Elizabet Tabita Kemal Ade Sekarwati Layli Hardiyanti M., Lulu Chaerani Marliza Ganefi Gumay Maulidia Putri Iriyanti Miftahul Jannah Mukhibah, Durrotul Naeli Umniati Nispi, Fajrian Putra, Andika Kurnia Rizki Eka Wahyuni Sidiq, Abdul Hafidh Vega Putri Khatinka Vega Putri Khatinka WIDIASTUTI - Widiastuti Widiastuti Witta Listiya Ningrum Wulandari, Lily