Add unit test and run configuration

.idea/runConfigurations/Run_tests.xml

@@ -0,0 +1,18 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Run tests" type="tests" factoryName="Unittests">
+    <module name="pykusto" />
+    <option name="INTERPRETER_OPTIONS" value="" />
+    <option name="PARENT_ENVS" value="true" />
+    <option name="SDK_HOME" value="C:\venv3\pykusto\Scripts\python.exe" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/test" />
+    <option name="IS_MODULE_SDK" value="true" />
+    <option name="ADD_CONTENT_ROOTS" value="true" />
+    <option name="ADD_SOURCE_ROOTS" value="true" />
+    <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+    <option name="_new_pattern" value="&quot;&quot;" />
+    <option name="_new_additionalArguments" value="&quot;&quot;" />
+    <option name="_new_target" value="&quot;$PROJECT_DIR$/test&quot;" />
+    <option name="_new_targetType" value="&quot;PATH&quot;" />
+    <method v="2" />
+  </configuration>
+</component>

test/test_query.py

@@ -0,0 +1,9 @@
+from unittest import TestCase
+
+from column import columnGenerator as Col
+from query import Query, Order, Nulls
+
+
+class TestQuery(TestCase):
+    def test_where(self):
+        print(Query().where(Col.foo > 4).take(5).sort_by(Col.bar, Order.ASC, Nulls.LAST).compile_all())

ut.py

@@ -1,4 +0,0 @@
-from column import columnGenerator as Col
-from query import Query, Order, Nulls
-
-print(Query().where(Col.foo > 4).take(5).sort_by(Col.bar, Order.ASC, Nulls.LAST).compile_all())