From 44b0a5989f76570fc19dc41314f31c4fa9c2039b Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Fri, 11 Nov 2022 20:41:25 +0300
Subject: Add buffering for simple test diagnostics

Also fix simple test redirecting diff's stdout to stderr.
---
 tests/test/simple/generated/driver.cxx | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

(limited to 'tests/test/simple/generated/driver.cxx')

diff --git a/tests/test/simple/generated/driver.cxx b/tests/test/simple/generated/driver.cxx
index 89dacca..ca6dfcb 100644
--- a/tests/test/simple/generated/driver.cxx
+++ b/tests/test/simple/generated/driver.cxx
@@ -49,13 +49,23 @@ main (int argc, char* argv[])
   }
   else
   {
-    ifstream ifs (argv[i]);
+    istream* is;
+    ifstream ifs;
 
-    if (!ifs.is_open ())
-      cerr << "unable to open " << argv[1] << endl;
+    if (argv[i] != string ("-"))
+    {
+      ifs.open (argv[i]);
+
+      if (!ifs.is_open ())
+        cerr << "unable to open " << argv[1] << endl;
+
+      is = &ifs;
+    }
+    else
+      is = &cin;
 
     string s;
-    r = getline (ifs, s) && s == "1.2.3" ? 0 : 1;
+    r = getline (*is, s) && s == "1.2.3" ? 0 : 1;
   }
 
   return r;
-- 
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