TST: Add more test cases

tests/test_graphbin2.py

@@ -4,13 +4,7 @@
 import pytest
 
 __author__ = "Vijini Mallawaarachchi"
-__copyright__ = "Copyright 2020, GraphBin2 Project"
-__credits__ = ["Vijini Mallawaarachchi", "Anuradha Wickramarachchi", "Yu Lin"]
-__license__ = "BSD"
-__version__ = "1.2.0"
-__maintainer__ = "Vijini Mallawaarachchi"
-__email__ = "[email protected]"
-__status__ = "Development"
+__credits__ = ["Vijini Mallawaarachchi"]
 
 
 TEST_ROOTDIR = Path(__file__).parent

tests/test_support.py

@@ -0,0 +1,50 @@
+import subprocess
+from pathlib import Path
+
+import pytest
+
+__author__ = "Vijini Mallawaarachchi"
+__credits__ = ["Vijini Mallawaarachchi"]
+
+
+TEST_ROOTDIR = Path(__file__).parent
+
+
+@pytest.fixture(scope="session")
+def tmp_dir(tmpdir_factory):
+    return tmpdir_factory.mktemp("tmp")
+
+
+@pytest.fixture(autouse=True)
+def workingdir(tmp_dir, monkeypatch):
+    """set the working directory for all tests"""
+    monkeypatch.chdir(tmp_dir)
+
+
+def exec_command(cmnd, stdout=subprocess.PIPE, stderr=subprocess.PIPE):
+    """executes shell command and returns stdout if completes exit code 0
+    Parameters
+    ----------
+    cmnd : str
+      shell command to be executed
+    stdout, stderr : streams
+      Default value (PIPE) intercepts process output, setting to None
+      blocks this."""
+
+    proc = subprocess.Popen(cmnd, shell=True, stdout=stdout, stderr=stderr)
+    out, err = proc.communicate()
+    if proc.returncode != 0:
+        raise RuntimeError(f"FAILED: {cmnd}\n{err}")
+    return out.decode("utf8") if out is not None else None
+
+
+def test_gfa2fasta_help():
+    """test gfa2fasta help message"""
+    cmd = "gfa2fasta --help"
+    exec_command(cmd)
+
+
+def test_prepResult_help():
+    """test prepResult help message"""
+    cmd = "prepResult --help"
+    exec_command(cmd)