diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 84918049e54d44a1bc8c4928cef4caedb3f466f0..a83427a4f179e30707d86342408a9a8e48c0ff44 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -22,15 +22,18 @@ getData:
   - ln -sfn `readlink -e ./test_data/auth/cookies.txt` ~/.bdbag/deriva-cookies.txt
   - unzip ./test_data/bagit/Replicate_16-1ZX4
   - singularity run 'docker://bicf/gudmaprbkfilexfer:1.3' sh ./workflow/scripts/bdbagFetch.sh Replicate_16-1ZX4 16-1ZX4
+  - pytest -m getData
 
 trimData_se:
   stage: unit
   script:
   - if [ `nproc` -gt 8 ]; then ncore=8; else ncore=`nproc`; fi
   - singularity run 'docker://bicf/trimgalore:1.1' trim_galore --gzip -q 25 --illumina --length 35 --basename 16-1ZX4 -j ${ncore} ./test_data/fastq/16-1ZX4.R1.fastq.gz
+  - pytest -m trimData_se
 
 trimData_pe:
   stage: unit
   script:
   - if [ `nproc` -gt 8 ]; then ncore=8; else ncore=`nproc`; fi
-  - singularity run 'docker://bicf/trimgalore:1.1' trim_galore --gzip -q 25 --illumina --length 35 --paired --basename Q-Y5JA -j ${ncore} ./test_data/fastq/Q-Y5JA.R1.fastq.gz ./test_data/fastq/Q-Y5JA.R2.fastq.gz
\ No newline at end of file
+  - singularity run 'docker://bicf/trimgalore:1.1' trim_galore --gzip -q 25 --illumina --length 35 --paired --basename Q-Y5JA -j ${ncore} ./test_data/fastq/Q-Y5JA.R1.fastq.gz ./test_data/fastq/Q-Y5JA.R2.fastq.gz
+  - pytest -m trimData_pe
\ No newline at end of file
diff --git a/workflow/tests/test_trimData.py b/workflow/tests/test_trimData.py
new file mode 100644
index 0000000000000000000000000000000000000000..8fda067899e35c08e2d57770b082066c5f1a9cc2
--- /dev/null
+++ b/workflow/tests/test_trimData.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+
+import pytest
+import pandas as pd
+from io import StringIO
+import os
+
+test_output_path = os.path.dirname(os.path.abspath(__file__)) + \
+                '/../../'
+
+@pytest.mark.trimData_se
+def test_trimData_se():
+    assert os.path.exists(os.path.join(test_output_path, '16-1ZX4_trimmed.fq.gz'))
+
+@pytest.mark.trimData_pe
+def test_trimData_pe():
+    assert os.path.exists(os.path.join(test_output_path, 'Q-Y5JA_R1_val_1.fq.gz'))
+    assert os.path.exists(os.path.join(test_output_path, 'Q-Y5JA_R2_val_2.fq.gz'))
\ No newline at end of file