python exception catcher, benchmark get_owner

Author: scivision

+stdlib/+python/get_owner.m

@@ -1,14 +1,15 @@
 function n = get_owner(file)
-arguments
-  file (1,1) string
-end
 
 n = "";
 
-if stdlib.strempty(file), return, end
+if stdlib.strempty(file)
+  return
+end
 
-try %#ok<TRYNC>
+try
   n = string(py.pathlib.Path(file).owner());
+catch e
+  pythonException(e)
 end
 
 end

+stdlib/+python/private/pythonException.m

@@ -0,0 +1,11 @@
+function pythonException(e)
+
+switch e.identifier
+  case 'MATLAB:Python:PyException'
+    if ~contains(e.message, "FileNotFoundError")
+      rethrow(e)
+    end
+  otherwise, rethrow(e)
+end
+
+end

example/BenchmarkGetOwner.m

@@ -0,0 +1,38 @@
+classdef (SharedTestFixtures={ matlab.unittest.fixtures.PathFixture("..")}) ...
+    BenchmarkGetOwner < matlab.perftest.TestCase
+
+properties(TestParameter)
+backend
+end
+
+methods (TestParameterDefinition, Static)
+function backend = setupBackend()
+  backend = init_backend('get_owner');
+end
+end
+
+
+methods (Test)
+
+function bench_exist(tc, backend)
+tc.startMeasuring()
+o = stdlib.get_owner('.', backend);
+tc.stopMeasuring()
+
+tc.verifyClass(o, 'string')
+tc.verifyGreaterThan(strlength(o), 0)
+end
+
+
+function bench_not_exist(tc, backend)
+tc.startMeasuring()
+o = stdlib.get_owner('not-exist', backend);
+tc.stopMeasuring()
+
+tc.verifyClass(o, 'string')
+tc.verifyEqual(strlength(o), 0)
+end
+
+end
+
+end

example/BenchmarkGetOwnerRun.m

@@ -0,0 +1,18 @@
+function [r, s] =  BenchmarkGetOwnerRun()
+%% Exist
+r.same = run_bench('BenchmarkGetOwner/bench_exist');
+s.exist = sampleSummary(r.same);
+disp(sortrows(s.exist, "Median"))
+%% Not Exist
+r.not = run_bench('BenchmarkGetOwner/bench_not_exist');
+s.not = sampleSummary(r.not);
+disp(sortrows(s.not, "Median"))
+
+end
+
+
+function result = run_bench(name)
+suite = testsuite(name);
+exp = matlab.perftest.TimeExperiment.limitingSamplingError(MaxSamples=25);
+result = exp.run(suite);
+end