Add real test for site_concordancy

tests/test_dummy.py

-def func(x):
-    return x + 1
+import pytest
 
+from vtools.evaluate import site_concordancy
 
-def test_answer():
-    assert func(41) == 42
+from cyvcf2 import VCF
+
+
+@pytest.fixture
+def known():
+    bla =VCF('tests/cases/known1.vcf.gz', gts012=True)
+    return bla
+
+def test_evaluate(known):
+    d, disc = site_concordancy(known, known, ["known1"], ["known1"])
+    assert d['total_sites'] == 3
+    assert not disc
\ No newline at end of file

tox.ini

@@ -2,8 +2,7 @@
 envlist = py36
 
 [testenv]
-deps =  
-    -rrequirements.txt
+deps =
     pytest
 
 commands = pytest