Added test

tests/fs/test_unlink.c

@@ -0,0 +1,45 @@
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+int main() {
+  const char *filename = "test.dat";
+  const char *dirname = "test";
+
+  // Create a file
+  FILE *f = fopen(filename, "wb");
+  if (f == NULL) {
+    return 1;
+  }
+  if (fclose(f)) {
+    return 1;
+  }
+  // Check it exists
+  if (access(filename, F_OK) != 0) {
+    return 1;
+  }
+  // Delete the file
+  if (unlinkat(AT_FDCWD, filename, 0)) {
+    return 1;
+  }
+  // Check that it doesn't exist
+  if (access(filename, F_OK) != -1) {
+    return 1;
+  }
+
+  // Create a directory
+  if (mkdir(dirname, 0700)) {
+    return 1;
+  }
+  // Delete the directory
+  if (unlinkat(AT_FDCWD, dirname, AT_REMOVEDIR)) {
+    return 1;
+  }
+  // Check that it doesn't exist
+  if (access(dirname, F_OK) != -1) {
+    return 1;
+  }
+
+  return 0;
+}

tests/test_other.py

@@ -3789,6 +3789,12 @@ def test_init_file_at_offset(self):
     Popen([PYTHON, EMCC, 'src.cpp']).communicate()
     self.assertContained('read: 0\nfile size is 104\n', run_js('a.out.js'))
 
+  def test_unlink(self):
+    self.emcc_args = []
+    src = path_from_root('tests', 'fs', 'test_unlink.c')
+    out = path_from_root('tests', 'fs', 'test_unlink.out')
+    self.do_run_from_file(src, out, js_engines=[NODE_JS])
+
   def test_argv0_node(self):
     open('code.cpp', 'w').write(r'''
 #include <stdio.h>