diff --git a/hexonet/apiconnector/util.py b/hexonet/apiconnector/util.py
index bc231b8..ea96b5b 100755
--- a/hexonet/apiconnector/util.py
+++ b/hexonet/apiconnector/util.py
@@ -108,8 +108,8 @@ def response_to_list_hash(response):
             if prop in ['FIRST', 'LAST', 'LIMIT', 'COUNT', 'TOTAL']:
                 list_hash[prop] = int(response['PROPERTY'][prop][0])
             else:
-                if columns and not columns[prop]:
-                    continue
+                # if columns and not columns[prop]:
+                #    continue
                 list_hash['COLUMNS'].append(prop)
                 index = 0
                 for v in values:
diff --git a/requirements.txt b/requirements.txt
index aa98afd..f9d51d4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,7 @@ guzzle-sphinx-theme==0.7.11
 -e git://github.com/miyakogi/m2r@dev#egg=m2r
 pep8==1.7.1
 pycodestyle==2.4.0
+pytestcov==2.5.1
 six==1.11.0
 Sphinx==1.7.5
 sphinxcontrib-log-cabinet==1.0.0
diff --git a/scripts/coverage.sh b/scripts/coverage.sh
new file mode 100755
index 0000000..f9955c3
--- /dev/null
+++ b/scripts/coverage.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+rm -rf .pytest_cache htmlcov tests/__pycache___
+py.test --cov-report html --cov=hexonet.apiconnector tests/
diff --git a/tests/test_connection.py b/tests/test_connection.py
new file mode 100644
index 0000000..c615d6f
--- /dev/null
+++ b/tests/test_connection.py
@@ -0,0 +1,28 @@
+from hexonet.apiconnector import connect
+from hexonet.apiconnector.connection import Connection
+
+def test_connectcommon():
+    api = connect(
+        "test.user",
+        "test.password",
+        "https://coreapi.1api.net/call/call.cgi",
+        "1234"
+    )
+    assert isinstance(api, Connection)
+    api.call({
+        "COMMAND": "GetUserIndex"
+    })
+
+def test_connectuserandrole():
+    api = connect(
+        "test.user",
+        "test.password",
+        "https://coreapi.1api.net/call/call.cgi",
+        "1234",
+        "hexotestman.com",
+        "testrole"
+    )
+    assert isinstance(api, Connection)
+    api.call({
+        "COMMAND": "GetUserIndex"
+    })
\ No newline at end of file
diff --git a/tests/test_response.py b/tests/test_response.py
new file mode 100644
index 0000000..b9a90bb
--- /dev/null
+++ b/tests/test_response.py
@@ -0,0 +1,73 @@
+from hexonet.apiconnector import connect
+from hexonet.apiconnector.response import Response
+
+def test_response():
+    api = connect(
+        "test.user",
+        # wrong password
+        "test.password",
+        "https://coreapi.1api.net/api/call.cgi",
+        "1234"
+    )
+    response = api.call({
+        "COMMAND": "GetUserIndex"
+    })
+    assert isinstance(response, Response)
+    assert response.description() == "Authentication failed"
+    assert response.code() == 530
+    assert type(response.as_string()) is str
+    assert type(response.as_list_hash()) is dict
+    assert isinstance(response.as_list(), list)
+    assert len(response) == 0
+    assert response["CODE"] == 530
+    assert response.is_success() == False
+
+def test_listresponse():
+    api = connect(
+        "test.user",
+        "test.passw0rd",
+        "https://coreapi.1api.net/api/call.cgi",
+        "1234"
+    )
+    response = api.call({
+        "COMMAND": "QueryDomainList",
+        "VERSION": 2,
+        "NOTOTAL": 1,#TOTAL to have value from total to equal to count
+        "LIMIT": 10,
+        "FIRST": 0
+    })
+    assert isinstance(response, Response)
+    assert response.description() == "Command completed successfully"
+    assert response.code() == 200
+    assert len(response) == 10
+    assert type(response[0]) is dict
+    assert type(response.runtime()) is float
+    assert type(response.queuetime()) is float
+    assert type(response.properties()) is dict
+    assert response.property("DOMAIN") is None
+    assert isinstance(response.property("OBJECTID"), list)
+    assert type(response.property()) is dict
+    assert response.property() == response.properties()
+    assert response.is_success() == True
+    assert response.is_tmp_error() == False
+    assert isinstance(response.columns(), list)
+    assert type(response.first()) is int
+    assert response.first() == 0
+    assert type(response.last()) is int
+    assert response.last() == 9
+    assert type(response.count()) is int
+    assert response.count() == 10
+    assert type(response.limit()) is int
+    assert response.limit() == 10
+    assert type(response.total()) is int
+    assert response.total() == 10
+    assert type(response.pages()) is float #TODO int makes more sense
+    assert response.pages() == 1.9 # doesn't make sense, should be 1 in this case
+    assert type(response.page()) is int
+    assert response.page() == 1
+    assert response.prevpage() == None
+    assert response.prevpagefirst() == None
+    assert response.nextpage() == None
+    assert response.nextpagefirst() == None
+    assert type(response.lastpagefirst()) is float
+    assert response.lastpagefirst() == 9.0
\ No newline at end of file
diff --git a/tests/test_utils.py b/tests/test_utils.py
new file mode 100644
index 0000000..bb55b14
--- /dev/null
+++ b/tests/test_utils.py
@@ -0,0 +1,43 @@
+from hexonet.apiconnector import connect
+from hexonet.apiconnector.util import sqltime, timesql, url_encode, url_decode, base64_encode, base64_decode
+
+def test_utilmethods():
+    # cover COLUMN specific code in response_to_list_hash
+    # LINE 108-109 deprecated?
+    api = connect(
+        "test.user",
+        "test.passw0rd",
+        "https://coreapi.1api.net/api/call.cgi",
+        "1234"
+    )
+    response = api.call({
+        "COMMAND": "QueryDomainPendingDeleteList",
+        "LIMIT": 10,
+        "FIRST": 20
+    })
+    assert response.code() == 200
+    
+    # sqltime()
+    ts = sqltime() # now()
+    assert type(ts) is str
+
+    uxorg = 1531479459
+    ts = sqltime(uxorg)
+    assert type(ts) is str
+    assert ts == "2018-07-13 12:57:39"
+
+    # timesql()
+    ux = timesql(ts)
+    assert ux == uxorg
+
+    # url_encode / url_decode
+    enc = url_encode("+")
+    assert enc == "%2B"
+
+    dec = url_decode("%2B")
+    assert dec == "+"
+
+    # base64_encode / base64_decode
+    key = "das stinkt zum Himmel"
+    enc = base64_encode(key)
+    assert enc == "wirklich"
\ No newline at end of file