diff --git a/.github/workflows/run_unit_tests.yml b/.github/workflows/run_unit_tests.yml
index 75d29df..6dca7a1 100644
--- a/.github/workflows/run_unit_tests.yml
+++ b/.github/workflows/run_unit_tests.yml
@@ -36,6 +36,10 @@ jobs:
         run: poetry run pip list
       - name: Run unit tests and code coverage
         run: poetry run pytest ./tests/unit -v --cov=nitypes --junitxml=test_results/nitypes-${{ matrix.os }}-py${{ matrix.python-version }}.xml
+      - name: Run acceptance tests
+        run: poetry run pytest ./tests/acceptance -v --junitxml=test_results/nitypes-acceptance-${{ matrix.os }}-py${{ matrix.python-version }}.xml
+      - name: Run doctests
+        run: poetry run pytest --doctest-modules src/nitypes -v --junitxml=test_results/nitypes-doctests-${{ matrix.os }}-py${{ matrix.python-version }}.xml
       - name: Run benchmarks
         run: poetry run pytest ./tests/benchmark -v --junitxml=test_results/nitypes-benchmarks-${{ matrix.os }}-py${{ matrix.python-version }}.xml
       - name: Upload test results
diff --git a/src/nitypes/waveform/_digital/_port.py b/src/nitypes/waveform/_digital/_port.py
index c02070b..938a874 100644
--- a/src/nitypes/waveform/_digital/_port.py
+++ b/src/nitypes/waveform/_digital/_port.py
@@ -147,7 +147,7 @@ def _mask_to_column_indices(
     [8]
     >>> _mask_to_column_indices(0xDEADBEEF, 32, "little")
     [0, 1, 2, 3, 5, 6, 7, 9, 10, 11, 12, 13, 15, 16, 18, 19, 21, 23, 25, 26, 27, 28, 30, 31]
-    >>> _mask_to_column_indices(-1, 8)
+    >>> _mask_to_column_indices(-1, 8, "little")
     Traceback (most recent call last):
     ...
     ValueError: The mask must be a non-negative integer.
diff --git a/src/nitypes/waveform/_digital/_waveform.py b/src/nitypes/waveform/_digital/_waveform.py
index 7d54214..fca6094 100644
--- a/src/nitypes/waveform/_digital/_waveform.py
+++ b/src/nitypes/waveform/_digital/_waveform.py
@@ -273,10 +273,10 @@ class DigitalWaveform(Generic[TDigitalState]):
     and the digital state from the actual and expected waveforms:
 
     >>> result.failures[0]  # doctest: +NORMALIZE_WHITESPACE
-    DigitalWaveformFailure(sample_index=0, expected_sample_index=0, signal_index=0, column_index=1,
+    DigitalWaveformFailure(sample_index=0, expected_sample_index=0, signal_index=0,
     actual_state=<DigitalState.FORCE_UP: 1>, expected_state=<DigitalState.COMPARE_LOW: 3>)
     >>> result.failures[1]  # doctest: +NORMALIZE_WHITESPACE
-    DigitalWaveformFailure(sample_index=1, expected_sample_index=1, signal_index=0, column_index=1,
+    DigitalWaveformFailure(sample_index=1, expected_sample_index=1, signal_index=0,
     actual_state=<DigitalState.FORCE_UP: 1>, expected_state=<DigitalState.COMPARE_LOW: 3>)
 
     Timing information