Updated changelog, and test_dssp.py

Author: spyke7

package/CHANGELOG

@@ -20,8 +20,9 @@ The rules for this file:
  * 2.11.0
 
 Fixes
- * Fixes the error message for short peptide stretches inside dssp.py, 
-   and showing minimum value is 6 (Issue #5046, PR #5163)
+ * DSSP now explicitly checks for a minimum of 6 residues and raises a clear
+   error message, unlike the previous behavior where it would fail with an
+   incomprehensible broadcasting error at execution time (Issue #5046, PR #5163)
  * Fixes the verbose=False in EinsteinMSD, and only shows progress bar when
    verbose=True (Issue #5144, PR #5153)
  * Fix incorrect assignment of topology_format to format (and vice versa)
@@ -36,8 +37,6 @@ Enhancements
    (Issue #4679, PR #4745)
 
 Changes
- * Inside the DSSP class of dssp.py file, a value error is raised for 
-   value less than 6 (Issue #5046, PR #5163)
  * The msd.py inside analysis is changed, and ProgressBar is implemented inside
    _conclude_simple and _conclude_fft functions instead of tqdm (Issue #5144, PR #5153)
 

package/MDAnalysis/analysis/dssp/dssp.py

@@ -210,7 +210,7 @@ class DSSP(AnalysisBase):
     Parameters
     ----------
     atoms : Union[Universe, AtomGroup]
-        input at least 6 Universe or AtomGroup. In both cases, only protein residues will
+        input Universe or AtomGroup with at least 6 protein residues. In both cases, only protein residues will
         be chosen prior to the analysis via `select_atoms('protein')`.
         Heavy atoms of the protein are then selected by name
         `heavyatom_names`, and hydrogens are selected by name

testsuite/MDAnalysisTests/analysis/test_dssp.py

@@ -99,14 +99,14 @@ def test_insufficient_residues_raises_error(client_DSSP):
     resids = protein.residues.resids
 
     with pytest.raises(ValueError, match="DSSP requires at least 6 residues"):
-        res2 = u.select_atoms(f"protein and resid {resids[0]}-{resids[1]}")
+        res2 = protein.residues[:2].atoms
         DSSP(res2)
 
     with pytest.raises(ValueError, match="DSSP requires at least 6 residues"):
-        res4 = u.select_atoms(f"protein and resid {resids[0]}-{resids[3]}")
+        res4 = protein.residues[:4].atoms
         DSSP(res4)
 
-    res6 = u.select_atoms(f"protein and resid {resids[0]}-{resids[5]}")
+    res6 = protein.residues[:6].atoms
     dssp = DSSP(res6)
     result = dssp.run(**client_DSSP, stop=1)
     assert result.results.dssp.shape[1] == 6