diff --git a/test/unit_tests/sample_files/fortran_files/long_string_test.F90 b/test/unit_tests/sample_files/fortran_files/long_string_test.F90
new file mode 100644
index 00000000..2910fe53
--- /dev/null
+++ b/test/unit_tests/sample_files/fortran_files/long_string_test.F90
@@ -0,0 +1,111 @@
+!
+! This work (Common Community Physics Package Framework), identified by
+! NOAA, NCAR, CU/CIRES, is free of known copyright restrictions and is
+! placed in the public domain.
+!
+! THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+! IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+! FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+! THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+! IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+! CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+!>
+!! @brief Auto-generated Test of long string breaking for FortranWriter
+!!
+!
+module long_string_test
+
+   foo100 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789'
+
+   foo101 =                                                                                       &
+        '01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890'
+
+   foo102 =                                                                                       &
+        '012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901'
+
+   foo103 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012'
+
+   foo104 =                                                                                       &
+        '01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123'
+
+   foo105 =                                                                                       &
+        '012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234'
+
+   foo106 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345'
+
+   foo107 =                                                                                       &
+        '01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456'
+
+   foo108 =                                                                                       &
+        '012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567'
+
+   foo109 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678'
+
+   foo110 =                                                                                       &
+        '01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789'
+
+   foo111 =                                                                                       &
+        '012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890'
+
+   foo112 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901'
+
+   foo113 =                                                                                       &
+        '01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012'
+
+   foo114 =                                                                                       &
+        '012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123'
+
+   foo115 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234'
+
+   foo116 =                                                                                       &
+        '01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345'
+
+   foo117 =                                                                                       &
+        '012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456'
+
+   foo118 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567'
+
+   foo119 =                                                                                       &
+        '01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678'
+
+   foo120 =                                                                                       &
+        '012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789'
+
+   foo121 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890&
+&'
+   foo122 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890&
+&1'
+   foo123 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890&
+&12'
+   foo124 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890&
+&123'
+   foo125 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890&
+&1234'
+   foo126 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890&
+&12345'
+   foo127 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890&
+&123456'
+   foo128 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890&
+&1234567'
+   foo129 =                                                                                       &
+        '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890&
+&12345678'
+
+end module long_string_test
diff --git a/test/unit_tests/test_fortran_write.py b/test/unit_tests/test_fortran_write.py
index 87e64baa..558db73d 100644
--- a/test/unit_tests/test_fortran_write.py
+++ b/test/unit_tests/test_fortran_write.py
@@ -122,6 +122,32 @@ def test_good_comments(self):
         amsg = f"{generate} does not match {compare}"
         self.assertTrue(filecmp.cmp(generate, compare, shallow=False), msg=amsg)
 
+    def test_long_strings(self):
+        """Test breaking of long strings"""
+        # Setup
+        testname = "long_string_test"
+        compare = os.path.join(_SAMPLE_FILES_DIR, f"{testname}.F90")
+        generate = os.path.join(_TMP_DIR, f"{testname}.F90")
+        # Exercise
+        header = "Test of long string breaking for FortranWriter"
+        foostr = ''.join(['0123456789']*10)
+        nxtchr = ord('0')
+        with FortranWriter(generate, 'w', header, f"{testname}") as gen:
+            while len(foostr) < 130:
+                gen.write(f"foo{len(foostr)} = '{foostr}'", 1)
+                foostr += chr(nxtchr)
+                nxtchr += 1
+                if nxtchr > ord('9'):
+                    nxtchr = ord('0')
+                # end if
+            # end while
+        # end with
+
+        # Check that file was generated
+        amsg = f"{generate} does not exist"
+        self.assertTrue(os.path.exists(generate), msg=amsg)
+        amsg = f"{generate} does not match {compare}"
+        self.assertTrue(filecmp.cmp(generate, compare, shallow=False), msg=amsg)
+
 if __name__ == "__main__":
     unittest.main()
-