#329 move scripts tests to correct location and add tests for benchma…

…rk script

src/fparser/scripts/tests/test_fparser2_bench.py

@@ -0,0 +1,73 @@
+# Copyright (c) 2022 Science and Technology Facilities Council
+#
+# All rights reserved.
+##
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+'''Tests for the fparser2_bench script.
+
+'''
+
+import pytest
+from fparser.scripts import fparser2_bench
+
+
+def test_gen_sub():
+    ''' Check the gen_sub() routine works as expected. '''
+    code = fparser2_bench.gen_sub(3)
+    assert "subroutine g3(x)\n" in code
+    assert "do i = 3, 12\n" in code
+    assert "end subroutine\n" in code
+
+
+def test_create_bench():
+    ''' Check the create_bench() routine works as expected. '''
+    code = fparser2_bench.create_bench(3)
+    assert "program bench3\n" in code
+    assert code.count("end subroutine") == 3
+    for idx in range(1, 4):
+        assert f"subroutine g{idx}(x)" in code
+    assert "end program" in code
+
+
+def test_runner_invalid_num_routines():
+    ''' Test the checking on the value of the supplied num_routines
+    parameter. '''
+    with pytest.raises(ValueError) as err:
+        fparser2_bench.runner(0)
+    assert ("Number of routines to create must be a positive, non-zero "
+            "integer but got: 0" in str(err.value))
+
+
+def test_runner(capsys):
+    ''' Check that normal usage gives the expected benchmark output. '''
+    fparser2_bench.runner(3)
+    stdout, stderr = capsys.readouterr()
+    assert stderr == ""
+    assert "Constructing benchmark code with 3 subroutines" in stdout
+    assert "Time taken for parse =" in stdout