apitest: Allow reading OtterOutput to a string

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/apitest/apitest.rs b/apitest/apitest.rs
index 4a277c63ea036f1ef1935d8e2ad2be0e32b66690..5bb53ad0c41a105933294c8f3a6abc4243660475 100644 (file)
--- a/apitest/apitest.rs
+++ b/apitest/apitest.rs
@@ -654,6 +654,15 @@ impl From<OtterOutput> for String {
     s
   }
 }
+impl From<&mut OtterOutput> for String {
+  fn from(oo: &mut OtterOutput) -> String {
+    let mut s = String::new();
+    let o = oo.output.as_mut().unwrap();
+    o.rewind().unwrap();
+    o.read_to_string(&mut s).unwrap();
+    s
+  }
+}
 impl Drop for OtterOutput {
   fn drop(&mut self) {
     if let Some(mut o) = self.output.take() {