1 files changed, 37 insertions, 0 deletions
diff --git a/src/test/run-pass/syntax-extension-fmt.rs b/src/test/run-pass/syntax-extension-fmt.rs
index 2ffea946..abe3a30a 100644
--- a/src/test/run-pass/syntax-extension-fmt.rs
+++ b/src/test/run-pass/syntax-extension-fmt.rs
@@ -53,4 +53,41 @@ fn main() {
   test(#fmt("%-10x", 0xff_u), "ff        ");
   test(#fmt("%-10X", 0xff_u), "FF        ");
   test(#fmt("%-10t", 0xff_u), "11111111  ");
+
+  // Precision
+//   test(#fmt("%.d", 0), "");
+//   test(#fmt("%.u", 0u), "");
+//   test(#fmt("%.x", 0u), "");
+//   test(#fmt("%.d", 10), "10");
+//   test(#fmt("%.d", -10), "-10");
+//   test(#fmt("%.u", 10u), "10");
+   test(#fmt("%.s", "test"), "");
+//   test(#fmt("%.x", 127u), "7f");
+
+//   test(#fmt("%.0d", 0), "");
+//   test(#fmt("%.0u", 0u), "");
+//   test(#fmt("%.0x", 0u), "");
+//   test(#fmt("%.0d", 10), "10");
+//   test(#fmt("%.0d", -10), "-10");
+//   test(#fmt("%.0u", 10u), "10");
+   test(#fmt("%.0s", "test"), "");
+//   test(#fmt("%.0x", 127u), "7f");
+
+//   test(#fmt("%.1d", 0), "0");
+//   test(#fmt("%.1u", 0u), "0");
+//   test(#fmt("%.1x", 0u), "0");
+//   test(#fmt("%.1d", 10), "10");
+//   test(#fmt("%.1d", -10), "-10");
+//   test(#fmt("%.1u", 10u), "10");
+   test(#fmt("%.1s", "test"), "t");
+//   test(#fmt("%.1x", 127u), "7f");
+
+//   test(#fmt("%.5d", 0), "00000");
+//   test(#fmt("%.5u", 0u), "00000");
+//   test(#fmt("%.5x", 0u), "00000");
+//   test(#fmt("%.5d", 10), "00010");
+//   test(#fmt("%.5d", -10), "-00010");
+//   test(#fmt("%.5u", 10u), "00010");
+   test(#fmt("%.5s", "test"), "test");
+//   test(#fmt("%.5x", 127u), "0007f");
 }