reg/tests: Add initial tests for 'reg import'.

programs/reg/tests/reg.c

@@ -654,6 +654,20 @@ static void test_v_flags(void)
     ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);
 }
 
+static void test_import(void)
+{
+    DWORD r;
+
+    run_reg_exe("reg import", &r);
+    ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);
+
+    run_reg_exe("reg import /?", &r);
+    todo_wine ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
+
+    run_reg_exe("reg import missing.reg", &r);
+    ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);
+}
+
 START_TEST(reg)
 {
     DWORD r;
@@ -666,4 +680,5 @@ START_TEST(reg)
     test_delete();
     test_query();
     test_v_flags();
+    test_import();
 }