1 files changed, 36 insertions, 0 deletions
diff --git a/src/user/filetest/filetest.c b/src/user/filetest/filetest.c
new file mode 100644
index 0000000..e7792ff
--- /dev/null
+++ b/src/user/filetest/filetest.c
@@ -0,0 +1,36 @@
+#include <libterm/terminal.h>
+#include <knob/file.h>
+
+#define TEST_FILE "user/test.txt"
+
+void main() {
+  struct file *f = open_file(TEST_FILE);
+  if (!f) {
+    term_add_sz("Failed to open " TEST_FILE ".\n");
+    return;
+  }
+
+  char ch;
+  if (!read_from_file(f, 1, &ch)) {
+    term_add_sz(TEST_FILE " is empty.\n");
+    close_file(f);
+    return;
+  }
+
+  term_addf(TEST_FILE " contained '%c'.\n", ch);
+
+  if (++ch >= 0x7f)
+    ch = 0x21;
+
+  seek_file_to(f, 0);
+
+  if (!write_to_file(f, 1, &ch)) {
+    term_add_sz("Failed to write to " TEST_FILE ".\n");
+    close_file(f);
+    return;
+  }
+
+  term_addf("Wrote '%c' to " TEST_FILE ".\n", ch);
+
+  close_file(f);
+}
+\ No newline at end of file