add inode(). improve samepath test

Author: scivision

+stdlib/inode.m

@@ -0,0 +1,16 @@
+%% INODE filesystem inode of path
+% requires: java
+% Windows always returns 0, Unix returns inode number.
+
+function i = inode(path)
+arguments
+  path {mustBeTextScalar}
+end
+
+if stdlib.exists(path)
+  i = java.nio.file.Files.getAttribute(javaPathObject(path), "unix:ino", javaLinkOption());
+else
+  i = [];
+end
+
+end

test/TestFileImpure.m

@@ -5,7 +5,6 @@
 
 p_same = {...
 {"","", false}, ...
-{tempname(), tempname(), false}, ...
 {"..", "./..", true}, ...
 {"..", pwd() + "/..", true}}
 
@@ -44,12 +43,24 @@ function test_makedir(tc)
 rmdir(d)
 end
 
+function test_inode(tc)
+tc.assumeFalse(ispc(), "not for Windows")
+
+tc.verifyEqual(stdlib.inode("."), stdlib.inode(pwd()))
+tc.verifyEmpty(stdlib.inode(tempname))
+end
+
 %%
 function test_samepath(tc, p_same)
 tc.verifyEqual(stdlib.samepath(p_same{1}, p_same{2}), p_same{3}, ...
   "samepath(" + p_same{1} + "," + p_same{2} + ")")
 end
 
+function test_samepath_notexist(tc)
+t = tempname();
+tc.verifyFalse(stdlib.samepath(t, t))
+end
+
 
 function test_get_pid(tc)
 pid = stdlib.get_pid();