diff --git a/.gitignore b/.gitignore
index d5aeca07190085922ba7a663f5b7ece41edbed17..00ac7501afc884f227b151e60977a1f9e352365c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,3 +35,7 @@ builds/
 
 gmsh_tmp/
 *.meshmode
+
+.coverage
+pytest.xml
+prof/
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a77b24a3ba3e0e21995941ef40e21a9e388777f5..50b070b21aafdfea3270e9a5788eca7d3adc7473 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -28,10 +28,12 @@ Python 3 POCL:
   - export PY_EXE=python3
   - export PYOPENCL_TEST=portable
   - export HDF5_USE_FILE_LOCKING=FALSE
-  - export EXTRA_INSTALL="pybind11 cython numpy pytest scipy mako wheel"
+  - export EXTRA_INSTALL="pybind11 cython numpy pytest pytest-cov scipy mako wheel"
+  - export PYTEST_FLAGS="--cov=volumential"
   - git submodule sync && git submodule update --init --recursive --remote
   - ((cd contrib/meshgen11_dealii/; ./build.sh) && echo "Using meshgen11_dealii.") || (echo "Using boxtree for meshgen.")
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
+  - sed -i -e '/^TESTABLES=.*/i PIP="${PY_EXE} $(which pip)" \n$PIP uninstall -y pytest-warnings' build-and-test-py-project.sh
   - ". ./build-and-test-py-project.sh"
   tags:
   - python3
@@ -50,10 +52,12 @@ Python 3 Intel:
   - source /opt/enable-intel-cl.sh
   - export PYOPENCL_TEST="intel(r):pu"
   - export HDF5_USE_FILE_LOCKING=FALSE
-  - export EXTRA_INSTALL="pybind11 cython numpy pytest scipy mako wheel"
+  - export PYTEST_FLAGS="--cov=volumential"
+  - export EXTRA_INSTALL="pybind11 cython numpy pytest pytest-cov scipy mako wheel"
   - git submodule sync && git submodule update --init --recursive --remote
   - ((cd contrib/meshgen11_dealii/; ./build.sh) && echo "Using meshgen11_dealii.") || (echo "Using boxtree for meshgen.")
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
+  - sed -i -e '/^TESTABLES=.*/i PIP="${PY_EXE} $(which pip)" \n$PIP uninstall -y pytest-warnings' build-and-test-py-project.sh
   - ". ./build-and-test-py-project.sh"
   tags:
   - python3
@@ -71,6 +75,7 @@ Python 3 Conda:
   - export SUMPY_FORCE_SYMBOLIC_BACKEND=symengine
   - export CONDA_ENVIRONMENT=.test-conda-env-py3.yml
   - export HDF5_USE_FILE_LOCKING=FALSE
+  - export PYTEST_FLAGS="--cov=volumential"
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project-within-miniconda.sh
   - ". ./build-and-test-py-project-within-miniconda.sh"
   tags:
@@ -91,6 +96,7 @@ Python 3 Conda Apple:
   - export CONDA_ENVIRONMENT=.test-conda-env-py3-macos.yml
   - export HDF5_USE_FILE_LOCKING=FALSE
   - export CC=clang
+  - export PYTEST_FLAGS="--cov=volumential"
   - set -o xtrace
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project-within-miniconda.sh
   - ". ./build-and-test-py-project-within-miniconda.sh"
diff --git a/README.md b/README.md
index fe3f38b6db0288a3dafcf8c948c1614752bf4b5c..7f938c1f131d5ef9beb771c4667ad60427eaf655 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,8 @@
 # Volumential
 
+![pipeline](https://gitlab.tiker.net/xywei/volumential/badges/master/pipeline.svg)
+![coverage](https://gitlab.tiker.net/xywei/volumential/badges/master/coverage.svg)
+
 Volumential (VOLUME poteNTIAL) provides toolset to solve volume potential integral equations
 efficiently via Fast Multipole Method.
 
diff --git a/test/conftest.py b/test/conftest.py
index b6e6b9bfce119470998cd41bfe45639aa9f0f25e..dcd9a6ac649a63b6e2471fb22e34226aa1d01eb8 100644
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -64,7 +64,7 @@ def pytest_sessionstart(session):
     # pre-compute a basic table that is re-used in many tests.
     # can be easily turned off to run individual tests that do not require
     # the table cache.
-    if 0:
+    if 1:
         with NearFieldInteractionTableManager(
                 "/tmp/volumential-tests.hdf5") as tm:
             table, _ = tm.get_table(