PR #777 minor copy finetuning

Author: soxofaan

CHANGELOG.md

@@ -11,7 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - `openeo.testing.io.TestDataLoader`: unit test utility to compactly load (and optionally preprocess) tests data (text/JSON/...)
 - `openeo.Connection`: automatically retry API requests on `429 Too Many Requests` HTTP errors, with appropriate delay if possible ([#441](https://github.com/Open-EO/openeo-python-client/issues/441))
-- Introduced the `pixel_tolerance` variable in `openeo.testing.results` to specify the allowable percentage of differing pixels in the results.
+- Introduced `pixel_tolerance` argument in `openeo.testing.results` helpers to specify the ignorable fraction of significantly differing pixels. ([#776](https://github.com/Open-EO/openeo-python-client/issues/776))
 
 ### Changed
 

openeo/testing/results.py

@@ -239,7 +239,7 @@ def _compare_xarray_dataarray(
             percentage_bad_pixels = bad_pixels.mean().item() * 100
             assert (
                 percentage_bad_pixels <= pixel_tolerance
-            ), f"{percentage_bad_pixels:.3f}% of pixels that are different and this is above the threshold of {pixel_tolerance:.3f}%"
+            ), f"Fraction significantly differing pixels: {percentage_bad_pixels}% > {pixel_tolerance}%"
             xarray.testing.assert_allclose(
                 a=actual.where(~bad_pixels), b=expected.where(~bad_pixels), rtol=rtol, atol=atol
             )
@@ -497,7 +497,8 @@ def assert_job_results_allclose(
         :py:meth:`~openeo.rest.job.JobResults` object or path to directory with downloaded assets.
     :param rtol: relative tolerance
     :param atol: absolute tolerance
-    :param pixel_tolerance: maximum fraction of pixels (in percent) that is allowed to be different (considering ``atol`` and ``rtol``)
+    :param pixel_tolerance: maximum fraction of pixels (in percent)
+        that is allowed to be significantly different (considering ``atol`` and ``rtol``)
     :param tmp_path: root temp path to download results if needed.
         It's recommended to pass pytest's `tmp_path` fixture here
     :raises AssertionError: if not equal within the given tolerance

tests/testing/test_results.py

@@ -162,8 +162,7 @@ def test_simple_atol(self, actual, atol, expected_issues):
                 21,
                 [
                     dirty_equals.IsStr(
-                        regex=r"40.000% of pixels that are different and this is above the threshold of 21.000%",
-                        regex_flags=re.DOTALL,
+                        regex=r"Fraction significantly differing pixels: 40.0% > 21%",
                     )
                 ],
             ),