test: is_rosetta

Author: scivision

+stdlib/is_rosetta.m

@@ -1,19 +1,16 @@
 %% IS_ROSETTA on Apple Silicon via Rosetta
 %
 % true if Matlab on Apple Silicon CPU is built for Intel x86_64
+%
+% "uname -m" reports "x86_64" from within Matlab on Apple Silicon if using Rosetta
 
 function r = is_rosetta()
-r = false;
-
-if ~ismac()
-  return
-end
-
-% uname -m reports "x86_64" from within Matlab on Apple Silicon if using Rosetta
-
-[ret, raw] = system("sysctl -n sysctl.proc_translated");
-r = ret == 0 && startsWith(raw, '1');
 
+if ismac()
+  [s, raw] = system("sysctl -n sysctl.proc_translated");
+  r = s == 0 && startsWith(raw, '1');
+else
+  r = false;
 end
 
 %!assert(islogical(is_rosetta()))

octave_build.m

@@ -14,8 +14,6 @@ function octave_build(overwrite)
 fullfile(d, "disk_available.cpp"), ...
 fullfile(d, "disk_capacity.cpp"), ...
 fullfile(d, "drop_slash.cpp"), ...
-fullfile(d, "is_wsl.cpp"), ...
-fullfile(d, "is_rosetta.cpp"), ...
 fullfile(d, "is_admin.cpp"), ...
 fullfile(d, "normalize.cpp"), ...
 fullfile(d, "proximate_to.cpp"), ...

test/TestSys.m

@@ -1,7 +1,7 @@
 classdef TestSys < matlab.unittest.TestCase
 
 properties (TestParameter)
-fun = {stdlib.iscygwin, stdlib.isoctave, stdlib.is_rosetta, stdlib.isinteractive, stdlib.has_dotnet, ...
+fun = {stdlib.iscygwin, stdlib.isoctave, stdlib.isinteractive, stdlib.has_dotnet, ...
        stdlib.has_java, stdlib.has_python}
 fi32 = {stdlib.is_wsl}
 end
@@ -17,6 +17,14 @@ function test_platform_int32(tc, fi32)
 tc.verifyClass(fi32, 'int32')
 end
 
+function test_is_rosetta(tc)
+if ismac()
+  tc.verifyClass(stdlib.is_rosetta(), 'logical')
+else
+  tc.verifyFalse(stdlib.is_rosetta(), 'is_rosetta should be false on non-macOS systems')
+end
+end
+
 function test_dotnet_version(tc)
 tc.assumeTrue(stdlib.has_dotnet())
 v = stdlib.dotnet_version();