[functional-tests (rust)] port thin_repair tests to rust.

cargo test

tests/common/mod.rs

@@ -59,6 +59,17 @@ macro_rules! thin_rmap {
     };
 }
 
+#[macro_export]
+macro_rules! thin_repair {
+    ( $( $arg: expr ),* ) => {
+        {
+            use std::ffi::OsString;
+            let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
+            duct::cmd("bin/thin_repair", args).stdout_capture().stderr_capture()
+        }
+    };
+}
+
 //------------------------------------------
 
 pub struct TestDir {