v0.12.0.md

@@ -68,6 +68,37 @@ np.testing.assert_almost_equal(pesummary_viewing_angle, reviewed_viewing_angle)
 
 # `summaryextract`
 
+## Review tasks
+
+To test the `summaryextract` executable we extracted the `PublicationSamples` posterior samples from the public GW190814.h5 file and compared the contents with the original file. We ran the following:
+
+```bash
+summaryextract --outdir ./ --samples GW190814.h5 --filename extracted_PublicationSamples.dat --file_format dat --label PublicationSamples
+```
+
+And compared the contents with:
+
+```python
+import h5py
+import numpy as np
+
+original = h5py.File("GW190814.h5", "r")
+original_PublicationSamples = original["PublicationSamples"]["posterior_samples"]
+extracted = np.genfromtxt("extracted_PublicationSamples.dat", names=True)
+assert all(param in extracted.dtype.names for param in original_PublicationSamples.dtype.names)
+for param in original_PublicationSamples.dtype.names:
+   
+ np.testing.assert_almost_equal(original_PublicationSamples[param], extracted[param])
+```
+
+with output:
+
+```bash
+
+```
+
+As you can see the extracted samples match the original.
+
 ## Related MRs
 
 * https://git.ligo.org/lscsoft/pesummary/-/merge_requests/519