diff --git a/tests/test_exon_concatenation.py b/tests/test_exon_concatenation.py
index fbeb13047b8cbd625c9e47d0134e63d09acbec76..01cbd49eeb0c0ee5acd4e07bef6a4a75bd13e7af 100644
--- a/tests/test_exon_concatenation.py
+++ b/tests/test_exon_concatenation.py
@@ -1,3 +1,9 @@
 import pytest
-
 import exon_concatenation from exon_concatenation
+
+test_fasta_1 = "test_files/test_1.fa"
+test_fasta_2 = "test_files/test_2.fa"
+
+def test_exon_concatenation():
+    assert exon_concatenation(test_fasta_1) == expected_list_of_tuples
+    assert exon_concatenation(test_fasta_2) == expected
diff --git a/tests/test_poly_a.py b/tests/test_poly_a.py
index dc89197b9d69374bb1b165fdf37c088e13b9c800..91f90c19937d45778c56b8b3fdeafecd31fe9ea5 100644
--- a/tests/test_poly_a.py
+++ b/tests/test_poly_a.py
@@ -1,3 +1,12 @@
 import pytest
-
 from poly_a import poly_a_generator, poly_a_addition_to_fasta_list
+
+
+
+
+def test_poly_a_generator():
+    assert poly_a_generator(exon_string) == exon_and_polya
+
+
+def test_poly_a_addition_to_fasta_list():
+    assert poly_a_addition_to_fasta_list(list_of_tuples) == manipulated_list_of_tuples