diff --git a/.github/workflows/norms.yaml b/.github/workflows/norms.yaml
new file mode 100644
index 0000000..d277d66
--- /dev/null
+++ b/.github/workflows/norms.yaml
@@ -0,0 +1,24 @@
+name: Coding Norms
+on: [push]
+
+jobs:
+  check_pynorms:
+    runs-on: ubuntu-latest
+    name: Check coding norms with pycodestyle
+
+    steps:
+
+    - name: Install dependencies
+      run: |
+        pip install --upgrade pip
+        pip install pycodestyle
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        path: RDASApp
+
+    - name: Run pycodestyle
+      run: |
+        cd $GITHUB_WORKSPACE/RDASApp
+        pycodestyle -v --config ./.pycodestyle ./ush ./test
+
diff --git a/.github/workflows/unittests.yaml b/.github/workflows/unittests.yaml
new file mode 100644
index 0000000..b3cc630
--- /dev/null
+++ b/.github/workflows/unittests.yaml
@@ -0,0 +1,58 @@
+name: Unit Tests
+on: [push, pull_request]
+
+jobs:
+  ctests:
+    runs-on: ubuntu-latest
+    name: Run Unit Tests with ctest
+
+    steps:
+
+    - name: Install pip dependencies
+      run: |
+        pip install --upgrade pip
+        pip install pycodestyle
+        pip install netCDF4
+        pip install xarray
+
+    - name: Checkout wxflow
+      uses: actions/checkout@v3
+      with:
+        repository: NOAA-EMC/wxflow
+        ref: develop
+        path: wxflow
+
+    - name: Install wxflow
+      run: |
+        cd wxflow
+        pip install .
+
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        path: RDASApp
+
+    - name: Install ecBuild
+      run: |
+        git clone https://github.com/ecmwf/ecbuild.git ecbuild
+        cd ecbuild
+        git checkout 3.6.1
+        mkdir bootstrap
+        cd bootstrap
+        ../bin/ecbuild ..
+        sudo make install
+
+    - name: Configure with cmake
+      run: |
+        mkdir $GITHUB_WORKSPACE/build && cd $GITHUB_WORKSPACE/build
+        cmake -DBUILD_RDASBUNDLE=OFF $GITHUB_WORKSPACE/RDASApp
+
+    - name: Build RDASApp
+      run: |
+        cd $GITHUB_WORKSPACE/build
+        make
+
+    - name: Run ctest
+      run: |
+        cd $GITHUB_WORKSPACE/build
+        ctest --output-on-failure
diff --git a/.pycodestyle b/.pycodestyle
new file mode 100644
index 0000000..162186c
--- /dev/null
+++ b/.pycodestyle
@@ -0,0 +1,6 @@
+[pycodestyle]
+count = False
+ignore = E226,E401,E402,W504
+max-line-length = 160
+statistics = True
+exclude = Experimental
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6492baf..3b9937a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -144,7 +144,7 @@ endif(BUILD_RDASBUNDLE)
 #add_subdirectory(ush)
 
 # Include testing.
-#add_subdirectory(test)
+add_subdirectory(test)
 
 # Finalize bundle
 # ---------------
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
new file mode 100644
index 0000000..3e44b28
--- /dev/null
+++ b/test/CMakeLists.txt
@@ -0,0 +1,11 @@
+# create testrun dir
+file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/test/testrun)
+
+# test for python coding norms
+add_test(NAME test_rdasapp_check_python_norms
+         COMMAND pycodestyle -v --config ./.pycodestyle ./ush ./test
+         WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+
+add_test(NAME test_rdasapp_gen_3dvar_yaml
+         COMMAND python3 ${PROJECT_SOURCE_DIR}/test/test_gen_3dvar_yaml.py --input ${PROJECT_SOURCE_DIR}/parm/atm/variational/3dvar_dripcg.yaml --output ${PROJECT_BINARY_DIR}/test/testrun/3dvar_example.yaml
+         WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/test/testrun)
diff --git a/test/test_gen_3dvar_yaml.py b/test/test_gen_3dvar_yaml.py
new file mode 100644
index 0000000..2e1b52e
--- /dev/null
+++ b/test/test_gen_3dvar_yaml.py
@@ -0,0 +1,39 @@
+import argparse
+import datetime as dt
+import os
+from wxflow import parse_j2yaml, cast_strdict_as_dtypedict, save_as_yaml
+from wxflow import add_to_datetime, to_timedelta, to_datetime
+
+my_dir = os.path.dirname(__file__)
+rdas_dir = os.path.join(my_dir, '../')
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-i', '--input', type=str, help='Input YAML Template', required=True)
+    parser.add_argument('-o', '--output', type=str, help='Output YAML File', required=True)
+    args = parser.parse_args()
+
+    os.environ['BERROR_YAML'] = os.path.join(rdas_dir, 'parm', 'atm', 'berror', 'staticb_identity.yaml')
+    os.environ['OBS_LIST'] = os.path.join(rdas_dir, 'parm', 'atm', 'obs', 'lists', 'rdas_prototype.yaml')
+    os.environ['OBS_YAML_DIR'] = os.path.join(rdas_dir, 'parm', 'atm', 'obs', 'config')
+
+    # let us define a configuration dictionary, note this will be incomplete and an example
+    config = {
+        'ATM_WINDOW_BEGIN': to_datetime('2023-11-01T23:30:00Z'),
+        'ATM_WINDOW_LENGTH': 'PT1H',
+        'layout_x': 1,
+        'layout_y': 1,
+        'npx_ges': 201,
+        'npy_ges': 151,
+        'npz_ges': 65,
+        'current_cycle': to_datetime('2023-11-02T00:00:00Z'),
+        'npx_anl': 201,
+        'npy_anl': 151,
+        'npz_anl': 65,
+        'DATA': os.path.join(os.path.dirname(args.output)),
+        'GPREFIX': 'rrfs.t23z.',
+        'APREFIX': 'rrfs.t00z.',
+    }
+
+    final_config = parse_j2yaml(args.input, config)
+    save_as_yaml(final_config, args.output)