diff --git a/tests/analysis/predicate/test_phenotype.py b/tests/analysis/predicate/test_phenotype.py
new file mode 100644
index 00000000..609417a9
--- /dev/null
+++ b/tests/analysis/predicate/test_phenotype.py
@@ -0,0 +1,31 @@
+import hpotk
+
+from gpsea.model import Cohort
+
+from gpsea.analysis.predicate.phenotype import PhenotypePolyPredicate
+from gpsea.analysis.predicate.phenotype import prepare_hpo_terms_of_interest, prepare_predicates_for_terms_of_interest
+
+
+def test_prepare_hpo_terms_of_interest(
+    suox_cohort: Cohort,
+    hpo: hpotk.MinimalOntology,
+):
+    terms = prepare_hpo_terms_of_interest(
+        cohort=suox_cohort,
+        hpo=hpo,
+    )
+
+    assert len(terms) == 66
+
+
+def test_prepare_predicates_for_terms_of_interest(
+    suox_cohort: Cohort,
+    hpo: hpotk.MinimalOntology,
+):
+    predicates = prepare_predicates_for_terms_of_interest(
+        cohort=suox_cohort,
+        hpo=hpo,
+    )
+
+    assert len(predicates) == 66
+    assert all(isinstance(p, PhenotypePolyPredicate) for p in predicates)