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Record W4414093251 · doi:10.3390/make7030097

A Review of Large Language Models for Automated Test Case Generation

2025· review· en· W4414093251 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueMachine Learning and Knowledge Extraction · 2025
Typereview
Languageen
FieldComputer Science
TopicSoftware Testing and Debugging Techniques
Canadian institutionsOntario Tech University
Fundersnot available
KeywordsTest (biology)Natural language generationNatural languageFocus (optics)SoftwareTest case

Abstract

fetched live from OpenAlex

Automated test case generation aims to improve software testing by reducing the manual effort required to create test cases. Recent advancements in large language models (LLMs), with their ability to understand natural language and generate code, have identified new opportunities to enhance this process. In this review, the focus is on the use of LLMs in test case generation to identify the effectiveness of the proposed methods compared with existing tools and potential directions for future research. A literature search was conducted using online resources, filtering the studies based on the defined inclusion and exclusion criteria. This paper presents the findings from the selected studies according to the three research questions and further categorizes the findings based on the common themes. These findings highlight the opportunities and challenges associated with the use of LLMs in this domain. Although improvements were observed in metrics such as test coverage, usability, and correctness, limitations such as inconsistent performance and compilation errors were highlighted. This provides a state-of-the-art review of LLM-based test case generation, emphasizing the potential of LLMs to improve automated testing while identifying areas for further advancements.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.002
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Other design · Consensus signal: none
GenreCandidate signal: Review · Consensus signal: Review
Teacher disagreement score0.902
Threshold uncertainty score0.988

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.002
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.042
GPT teacher head0.404
Teacher spread0.362 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it