Allow list of acceptable raster hashes for processing algorithm tests

Differences in gdal libraries mean the hash value may differ between
platforms. Allow multiple acceptable hashes to be listed for
expected test results

Author: nyalldawson

python/plugins/processing/tests/AlgorithmsTestBase.py

@@ -279,7 +279,10 @@ def check_results(self, results, context, params, expected):
                 dataArray = nan_to_num(dataset.ReadAsArray(0))
                 strhash = hashlib.sha224(dataArray.data).hexdigest()
 
-                self.assertEqual(strhash, expected_result['hash'])
+                if not isinstance(expected_result['hash'], str):
+                    self.assertTrue(strhash in expected_result['hash'])
+                else:
+                    self.assertEqual(strhash, expected_result['hash'])
             elif 'file' == expected_result['type']:
                 expected_filepath = self.filepath_from_param(expected_result)
                 result_filepath = results[id]

python/plugins/processing/tests/testdata/qgis_algorithm_tests.yaml

@@ -1148,7 +1148,9 @@ tests:
       Z_FACTOR: 1.0
     results:
       OUTPUT:
-        hash: 762865ee485a6736d188402aa10e6fd38a812a9e45a7dd2d4885a63a
+        hash:
+        - 762865ee485a6736d188402aa10e6fd38a812a9e45a7dd2d4885a63a
+        - f6a8e64647ae93a94f2a4945add8986526a7a07bc85849f3690d15b2
         type: rasterhash
 
   - algorithm: qgis:slope
@@ -1160,7 +1162,9 @@ tests:
       Z_FACTOR: 1.0
     results:
       OUTPUT:
-        hash: 151ea76a21b286c16567eb6b4b692925a84145b65561a0017effb1a1
+        hash:
+        - 151ea76a21b286c16567eb6b4b692925a84145b65561a0017effb1a1
+        - 177475642c57428b395bc0a1e7e86fc1cfd4d86ffc19f31ff8bc964d
         type: rasterhash
 
   - algorithm: qgis:ruggednessindex
@@ -1186,7 +1190,9 @@ tests:
       Z_FACTOR: 1.0
     results:
       OUTPUT:
-        hash: 58365b3715b925d6286e7f082ebd9c2a20f09fa1c922176d3f238002
+        hash:
+        - 58365b3715b925d6286e7f082ebd9c2a20f09fa1c922176d3f238002
+        - 75cca4c1a870a1e21185a2d85b33b6d9958a69fc6ebb04e4d6ceb8a3
         type: rasterhash
 
 #  - algorithm: qgis:relief