Add unit test for FS.trackingDelegate operation.

3 files changed, 53 insertions, 0 deletions

diff --git a/tests/fs/test_trackingdelegate.c b/tests/fs/test_trackingdelegate.c
new file mode 100644
index 00000000..6cdece72
--- /dev/null
+++ b/tests/fs/test_trackingdelegate.c
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <emscripten.h>
+
+int main() {
+
+  EM_ASM(
+    FS.trackingDelegate['willMovePath'] = function(oldpath, newpath) {
+      Module.print('About to move "' + oldpath + '" to "' + newpath + '"');
+    };
+    FS.trackingDelegate['onMovePath'] = function(oldpath, newpath) {
+      Module.print('Moved "' + oldpath + '" to "' + newpath + '"');
+    };
+    FS.trackingDelegate['willDeletePath'] = function(path) {
+      Module.print('About to delete "' + path + '"');
+    };
+    FS.trackingDelegate['onDeletePath'] = function(path) {
+      Module.print('Deleted "' + path + '"');
+    };
+    FS.trackingDelegate['onOpenFile'] = function(path, flags) { 
+      Module.print('Opened "' + path + '" with flags ' + flags);
+    };
+    FS.trackingDelegate['onWriteToFile'] = function(path) {
+      Module.print('Wrote to file "' + path + '"');
+    };
+  );
+
+  FILE *file;
+  file = fopen("/file.txt", "w");
+  fputs("hello!", file);
+  fclose(file);
+  rename("/file.txt", "/renamed.txt");
+  file = fopen("/renamed.txt", "r");
+  char str[256] = {};
+  fgets(str, 255, file);
+  printf("File read returned '%s'\n", str);
+  fclose(file);
+  remove("/renamed.txt");
+}
diff --git a/tests/fs/test_trackingdelegate.out b/tests/fs/test_trackingdelegate.out
new file mode 100644
index 00000000..b3c941c2
--- /dev/null
+++ b/tests/fs/test_trackingdelegate.out
@@ -0,0 +1,9 @@
+Opened "/file.txt" with flags 2
+Wrote to file "/file.txt"
+About to move "/file.txt" to "/renamed.txt"
+Moved "/file.txt" to "/renamed.txt"
+Opened "/renamed.txt" with flags 1
+File read returned 'hello!'
+Wrote to file "/dev/tty"
+About to delete "/renamed.txt"
+Deleted "/renamed.txt"
diff --git a/tests/test_core.py b/tests/test_core.py
index d25a61be..c9784ec9 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -4252,6 +4252,11 @@ def process(filename):
     src = open(path_from_root('tests', 'fs', 'test_nodefs_rw.c'), 'r').read()
     self.do_run(src, 'success', force_c=True, js_engines=[NODE_JS])
 
+  def test_fs_trackingdelegate(self):
+    src = path_from_root('tests', 'fs', 'test_trackingdelegate.c')
+    out = path_from_root('tests', 'fs', 'test_trackingdelegate.out')
+    self.do_run_from_file(src, out)
+
   def test_unistd_access(self):
     self.clear()
     if not self.is_emscripten_abi(): return self.skip('asmjs-unknown-emscripten needed for inline js')