diff --git a/.gitignore b/.gitignore
index c18dd8d..03a44c5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 __pycache__/
+htmlcov/
+.coverage
\ No newline at end of file
diff --git a/.idea/runConfigurations/Tests.xml b/.idea/runConfigurations/Tests.xml
index 17c8681..532689b 100644
--- a/.idea/runConfigurations/Tests.xml
+++ b/.idea/runConfigurations/Tests.xml
@@ -10,9 +10,9 @@
     <option name="ADD_SOURCE_ROOTS" value="true" />
     <option name="_new_keywords" value="&quot;&quot;" />
     <option name="_new_parameters" value="&quot;&quot;" />
-    <option name="_new_additionalArguments" value="&quot;&quot;" />
+    <option name="_new_additionalArguments" value="&quot;--cov\u003dkiwi_scp --cov-report\u003dhtml&quot;" />
     <option name="_new_target" value="&quot;tests&quot;" />
-    <option name="_new_targetType" value="&quot;PATH&quot;" />
+    <option name="_new_targetType" value="&quot;PYTHON&quot;" />
     <method v="2" />
   </configuration>
 </component>
\ No newline at end of file
diff --git a/kiwi_scp/config.py b/kiwi_scp/config.py
index cb9a0de..cc7f895 100644
--- a/kiwi_scp/config.py
+++ b/kiwi_scp/config.py
@@ -13,7 +13,7 @@ from ._constants import RE_SEMVER, RE_VARNAME, HEADER_KIWI_CONF_NAME, KIWI_CONF_
 # indent yaml lists
 class _KiwiDumper(yaml.Dumper):
     def increase_indent(self, flow=False, indentless=False):
-        return super().increase_indent(flow, False)
+        return super().increase_indent(flow, False)  # pragma: no cover
 
 
 class _Storage(BaseModel):
diff --git a/poetry.lock b/poetry.lock
index c35b800..5c3cb7e 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -55,6 +55,20 @@ category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
+[[package]]
+name = "coverage"
+version = "6.0.2"
+description = "Code coverage measurement for Python"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+tomli = {version = "*", optional = true, markers = "extra == \"toml\""}
+
+[package.extras]
+toml = ["tomli"]
+
 [[package]]
 name = "dataclasses"
 version = "0.8"
@@ -187,11 +201,14 @@ email = ["email-validator (>=1.0.3)"]
 
 [[package]]
 name = "pyparsing"
-version = "2.4.7"
+version = "3.0.1"
 description = "Python parsing module"
 category = "dev"
 optional = false
-python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+python-versions = ">=3.6"
+
+[package.extras]
+diagrams = ["jinja2", "railroad-diagrams"]
 
 [[package]]
 name = "pytest"
@@ -215,6 +232,21 @@ toml = "*"
 [package.extras]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
 
+[[package]]
+name = "pytest-cov"
+version = "3.0.0"
+description = "Pytest plugin for measuring coverage."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+coverage = {version = ">=5.2.1", extras = ["toml"]}
+pytest = ">=4.6"
+
+[package.extras]
+testing = ["fields", "hunter", "process-tests", "six", "pytest-xdist", "virtualenv"]
+
 [[package]]
 name = "pyyaml"
 version = "5.4.1"
@@ -239,6 +271,14 @@ category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
+[[package]]
+name = "tomli"
+version = "1.2.2"
+description = "A lil' TOML parser"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
 [[package]]
 name = "typing-extensions"
 version = "3.10.0.2"
@@ -249,7 +289,7 @@ python-versions = "*"
 
 [[package]]
 name = "virtualenv"
-version = "20.8.1"
+version = "20.9.0"
 description = "Virtual Python Environment builder"
 category = "dev"
 optional = false
@@ -258,7 +298,7 @@ python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 [package.dependencies]
 "backports.entry-points-selectable" = ">=1.0.4"
 distlib = ">=0.3.1,<1"
-filelock = ">=3.0.0,<4"
+filelock = ">=3.2,<4"
 importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 importlib-resources = {version = ">=1.0", markers = "python_version < \"3.7\""}
 platformdirs = ">=2,<3"
@@ -283,7 +323,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6.1"
-content-hash = "872024f4d335f920d178ef6b631785f4f6908f8f9f87d970932bd54dee7fd297"
+content-hash = "a5e47a9cdd079f42b70c323cf971290e0da9be66a15317b609a1f937a892fa7a"
 
 [metadata.files]
 atomicwrites = [
@@ -306,6 +346,41 @@ colorama = [
     {file = "colorama-0.4.4-py2.py3-none-any.whl", hash = "sha256:9f47eda37229f68eee03b24b9748937c7dc3868f906e8ba69fbcbdd3bc5dc3e2"},
     {file = "colorama-0.4.4.tar.gz", hash = "sha256:5941b2b48a20143d2267e95b1c2a7603ce057ee39fd88e7329b0c292aa16869b"},
 ]
+coverage = [
+    {file = "coverage-6.0.2-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:1549e1d08ce38259de2bc3e9a0d5f3642ff4a8f500ffc1b2df73fd621a6cdfc0"},
+    {file = "coverage-6.0.2-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:bcae10fccb27ca2a5f456bf64d84110a5a74144be3136a5e598f9d9fb48c0caa"},
+    {file = "coverage-6.0.2-cp310-cp310-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:53a294dc53cfb39c74758edaa6305193fb4258a30b1f6af24b360a6c8bd0ffa7"},
+    {file = "coverage-6.0.2-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:8251b37be1f2cd9c0e5ccd9ae0380909c24d2a5ed2162a41fcdbafaf59a85ebd"},
+    {file = "coverage-6.0.2-cp310-cp310-win32.whl", hash = "sha256:db42baa892cba723326284490283a68d4de516bfb5aaba369b4e3b2787a778b7"},
+    {file = "coverage-6.0.2-cp310-cp310-win_amd64.whl", hash = "sha256:bbffde2a68398682623d9dd8c0ca3f46fda074709b26fcf08ae7a4c431a6ab2d"},
+    {file = "coverage-6.0.2-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:60e51a3dd55540bec686d7fff61b05048ca31e804c1f32cbb44533e6372d9cc3"},
+    {file = "coverage-6.0.2-cp36-cp36m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:6a6a9409223a27d5ef3cca57dd7cd4dfcb64aadf2fad5c3b787830ac9223e01a"},
+    {file = "coverage-6.0.2-cp36-cp36m-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:4b34ae4f51bbfa5f96b758b55a163d502be3dcb24f505d0227858c2b3f94f5b9"},
+    {file = "coverage-6.0.2-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:3bbda1b550e70fa6ac40533d3f23acd4f4e9cb4e6e77251ce77fdf41b3309fb2"},
+    {file = "coverage-6.0.2-cp36-cp36m-win32.whl", hash = "sha256:4e28d2a195c533b58fc94a12826f4431726d8eb029ac21d874345f943530c122"},
+    {file = "coverage-6.0.2-cp36-cp36m-win_amd64.whl", hash = "sha256:a82d79586a0a4f5fd1cf153e647464ced402938fbccb3ffc358c7babd4da1dd9"},
+    {file = "coverage-6.0.2-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:3be1206dc09fb6298de3fce70593e27436862331a85daee36270b6d0e1c251c4"},
+    {file = "coverage-6.0.2-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:c9cd3828bbe1a40070c11fe16a51df733fd2f0cb0d745fb83b7b5c1f05967df7"},
+    {file = "coverage-6.0.2-cp37-cp37m-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:d036dc1ed8e1388e995833c62325df3f996675779541f682677efc6af71e96cc"},
+    {file = "coverage-6.0.2-cp37-cp37m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:04560539c19ec26995ecfb3d9307ff154fbb9a172cb57e3b3cfc4ced673103d1"},
+    {file = "coverage-6.0.2-cp37-cp37m-win32.whl", hash = "sha256:e4fb7ced4d9dec77d6cf533acfbf8e1415fe799430366affb18d69ee8a3c6330"},
+    {file = "coverage-6.0.2-cp37-cp37m-win_amd64.whl", hash = "sha256:77b1da5767ed2f44611bc9bc019bc93c03fa495728ec389759b6e9e5039ac6b1"},
+    {file = "coverage-6.0.2-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:61b598cbdbaae22d9e34e3f675997194342f866bb1d781da5d0be54783dce1ff"},
+    {file = "coverage-6.0.2-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:36e9040a43d2017f2787b28d365a4bb33fcd792c7ff46a047a04094dc0e2a30d"},
+    {file = "coverage-6.0.2-cp38-cp38-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:9f1627e162e3864a596486774876415a7410021f4b67fd2d9efdf93ade681afc"},
+    {file = "coverage-6.0.2-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:e7a0b42db2a47ecb488cde14e0f6c7679a2c5a9f44814393b162ff6397fcdfbb"},
+    {file = "coverage-6.0.2-cp38-cp38-win32.whl", hash = "sha256:a1b73c7c4d2a42b9d37dd43199c5711d91424ff3c6c22681bc132db4a4afec6f"},
+    {file = "coverage-6.0.2-cp38-cp38-win_amd64.whl", hash = "sha256:1db67c497688fd4ba85b373b37cc52c50d437fd7267520ecd77bddbd89ea22c9"},
+    {file = "coverage-6.0.2-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:f2f184bf38e74f152eed7f87e345b51f3ab0b703842f447c22efe35e59942c24"},
+    {file = "coverage-6.0.2-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:cd1cf1deb3d5544bd942356364a2fdc8959bad2b6cf6eb17f47d301ea34ae822"},
+    {file = "coverage-6.0.2-cp39-cp39-manylinux_2_5_i686.manylinux1_i686.manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:ad9b8c1206ae41d46ec7380b78ba735ebb77758a650643e841dd3894966c31d0"},
+    {file = "coverage-6.0.2-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:381d773d896cc7f8ba4ff3b92dee4ed740fb88dfe33b6e42efc5e8ab6dfa1cfe"},
+    {file = "coverage-6.0.2-cp39-cp39-win32.whl", hash = "sha256:424c44f65e8be58b54e2b0bd1515e434b940679624b1b72726147cfc6a9fc7ce"},
+    {file = "coverage-6.0.2-cp39-cp39-win_amd64.whl", hash = "sha256:abbff240f77347d17306d3201e14431519bf64495648ca5a49571f988f88dee9"},
+    {file = "coverage-6.0.2-pp36-none-any.whl", hash = "sha256:7092eab374346121805fb637572483270324407bf150c30a3b161fc0c4ca5164"},
+    {file = "coverage-6.0.2-pp37-none-any.whl", hash = "sha256:30922626ce6f7a5a30bdba984ad21021529d3d05a68b4f71ea3b16bda35b8895"},
+    {file = "coverage-6.0.2.tar.gz", hash = "sha256:6807947a09510dc31fa86f43595bf3a14017cd60bf633cc746d52141bfa6b149"},
+]
 dataclasses = [
     {file = "dataclasses-0.8-py3-none-any.whl", hash = "sha256:0201d89fa866f68c8ebd9d08ee6ff50c0b255f8ec63a71c16fda7af82bb887bf"},
     {file = "dataclasses-0.8.tar.gz", hash = "sha256:8479067f342acf957dc82ec415d355ab5edb7e7646b90dc6e2fd1d96ad084c97"},
@@ -371,13 +446,17 @@ pydantic = [
     {file = "pydantic-1.8.2.tar.gz", hash = "sha256:26464e57ccaafe72b7ad156fdaa4e9b9ef051f69e175dbbb463283000c05ab7b"},
 ]
 pyparsing = [
-    {file = "pyparsing-2.4.7-py2.py3-none-any.whl", hash = "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"},
-    {file = "pyparsing-2.4.7.tar.gz", hash = "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1"},
+    {file = "pyparsing-3.0.1-py3-none-any.whl", hash = "sha256:fd93fc45c47893c300bd98f5dd1b41c0e783eaeb727e7cea210dcc09d64ce7c3"},
+    {file = "pyparsing-3.0.1.tar.gz", hash = "sha256:84196357aa3566d64ad123d7a3c67b0e597a115c4934b097580e5ce220b91531"},
 ]
 pytest = [
     {file = "pytest-6.2.5-py3-none-any.whl", hash = "sha256:7310f8d27bc79ced999e760ca304d69f6ba6c6649c0b60fb0e04a4a77cacc134"},
     {file = "pytest-6.2.5.tar.gz", hash = "sha256:131b36680866a76e6781d13f101efb86cf674ebb9762eb70d3082b6f29889e89"},
 ]
+pytest-cov = [
+    {file = "pytest-cov-3.0.0.tar.gz", hash = "sha256:e7f0f5b1617d2210a2cabc266dfe2f4c75a8d32fb89eafb7ad9d06f6d076d470"},
+    {file = "pytest_cov-3.0.0-py3-none-any.whl", hash = "sha256:578d5d15ac4a25e5f961c938b85a05b09fdaae9deef3bb6de9a6e766622ca7a6"},
+]
 pyyaml = [
     {file = "PyYAML-5.4.1-cp27-cp27m-macosx_10_9_x86_64.whl", hash = "sha256:3b2b1824fe7112845700f815ff6a489360226a5609b96ec2190a45e62a9fc922"},
     {file = "PyYAML-5.4.1-cp27-cp27m-win32.whl", hash = "sha256:129def1b7c1bf22faffd67b8f3724645203b79d8f4cc81f674654d9902cb4393"},
@@ -417,14 +496,18 @@ toml = [
     {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
     {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
 ]
+tomli = [
+    {file = "tomli-1.2.2-py3-none-any.whl", hash = "sha256:f04066f68f5554911363063a30b108d2b5a5b1a010aa8b6132af78489fe3aade"},
+    {file = "tomli-1.2.2.tar.gz", hash = "sha256:c6ce0015eb38820eaf32b5db832dbc26deb3dd427bd5f6556cf0acac2c214fee"},
+]
 typing-extensions = [
     {file = "typing_extensions-3.10.0.2-py2-none-any.whl", hash = "sha256:d8226d10bc02a29bcc81df19a26e56a9647f8b0a6d4a83924139f4a8b01f17b7"},
     {file = "typing_extensions-3.10.0.2-py3-none-any.whl", hash = "sha256:f1d25edafde516b146ecd0613dabcc61409817af4766fbbcfb8d1ad4ec441a34"},
     {file = "typing_extensions-3.10.0.2.tar.gz", hash = "sha256:49f75d16ff11f1cd258e1b988ccff82a3ca5570217d7ad8c5f48205dd99a677e"},
 ]
 virtualenv = [
-    {file = "virtualenv-20.8.1-py2.py3-none-any.whl", hash = "sha256:10062e34c204b5e4ec5f62e6ef2473f8ba76513a9a617e873f1f8fb4a519d300"},
-    {file = "virtualenv-20.8.1.tar.gz", hash = "sha256:bcc17f0b3a29670dd777d6f0755a4c04f28815395bca279cdcb213b97199a6b8"},
+    {file = "virtualenv-20.9.0-py2.py3-none-any.whl", hash = "sha256:1d145deec2da86b29026be49c775cc5a9aab434f85f7efef98307fb3965165de"},
+    {file = "virtualenv-20.9.0.tar.gz", hash = "sha256:bb55ace18de14593947354e5e6cd1be75fb32c3329651da62e92bf5d0aab7213"},
 ]
 zipp = [
     {file = "zipp-3.6.0-py3-none-any.whl", hash = "sha256:9fe5ea21568a0a70e50f273397638d39b03353731e6cbbb3fd8502a33fec40bc"},
diff --git a/pyproject.toml b/pyproject.toml
index 50cd2a5..f65fb53 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,6 +13,7 @@ PyYAML = "^5.4.1"
 
 [tool.poetry.dev-dependencies]
 pytest = "^6.2.5"
+pytest-cov = "^3.0.0"
 toml = "^0.10.2"
 virtualenv = "^20.8.1"