test: native_exe for test finery

Author: scivision

buildfile.m

@@ -3,7 +3,7 @@
 
 plan = buildplan(localfunctions);
 
-sel = ~HasTag("exe") & ~HasTag("java") & ~HasTag("java_exe") & ~HasTag("python");
+sel = HasTag('native_exe') | (~HasTag("exe") & ~HasTag("java") & ~HasTag("java_exe") & ~HasTag("python"));
 if ispc()
   sel = sel & ~HasTag("unix");
 else

test/TestSubprocess.m

@@ -16,7 +16,36 @@ function test_dirs(tc)
 end
 
 
+methods (Test, TestTags = "native_exe")
+
+function test_cwd(tc)
+
+if ispc
+  c = 'cd';
+else
+  c = 'pwd';
+end
+
+% leave on for debugging.
+cmd_echo = true;
+
+[s, m] = stdlib.subprocess_run(c, 'echo', cmd_echo);
+tc.assertEqual(s, 0, "status non-zero")
+tc.verifyGreaterThan(strlength(m), 0, "empty directory not expected")
+
+[s, mc] = stdlib.subprocess_run(c, 'cwd', matlabroot, 'echo', cmd_echo);
+tc.assertEqual(s, 0, "status non-zero")
+tc.verifyNotEqual(m, mc, "expected different directory to have different contents")
+
+end
+
+end
+
+
 methods (Test, TestTags={'exe'})
+% these tests require the presence of test executables compiled by
+%   buildtool exe
+% The test "buildtool test:exe" automatically builds them
 
 function test_stdout_stderr(tc, lang_out)
 import matlab.unittest.constraints.IsFile
@@ -62,25 +91,6 @@ function test_stdin(tc, lang_in)
 end
 
 
-function test_cwd(tc)
-
-if ispc
-  c = 'dir';
-else
-  c = 'ls -l';
-end
-
-[s, m] = stdlib.subprocess_run(c);
-tc.assertEqual(s, 0, "status non-zero")
-tc.verifyGreaterThan(strlength(m), 0, "empty directory not expected")
-
-[s, mc] = stdlib.subprocess_run(c, 'cwd', matlabroot);
-tc.assertEqual(s, 0, "status non-zero")
-tc.verifyNotEqual(m, mc, "expected different directory to have different contents")
-
-end
-
-
 function test_env_run(tc)
 
 cwd = fileparts(mfilename('fullpath'));
@@ -154,9 +164,9 @@ function test_java_stdin(tc, lang_in)
 function test_java_cwd(tc)
 
 if ispc
-  c = ["cmd", "/c", "dir"];
+  c = ["cmd", "/c", "cd"];
 else
-  c = ["ls", "-l"];
+  c = "pwd";
 end
 
 [s, m, e] = stdlib.java_run(c);

test_main.m

@@ -14,7 +14,7 @@ function test_main(context, sel)
 end
 test_root = fullfile(cwd, "test");
 
-tags = releaseTestTags();
+tags = ["native_exe", releaseTestTags()];
 
 if ~exist('isMATLABReleaseOlderThan', 'builtin') || isMATLABReleaseOlderThan('R2022b')
   suite = testsuite(test_root, 'Tag', tags);