From bbf0fd89c981a788c3d22bde548b342d749eba3f Mon Sep 17 00:00:00 2001
From: Christopher Field <cfield2@gmail.com>
Date: Sun, 20 May 2018 20:37:43 -0500
Subject: [PATCH] Add `example` constructor for Assert

---
 src/assert.rs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/assert.rs b/src/assert.rs
index aa11a77..5ab3b6b 100644
--- a/src/assert.rs
+++ b/src/assert.rs
@@ -80,6 +80,27 @@ impl Assert {
         }
     }
 
+    /// Run a specific example of the current crate.
+    ///
+    /// Defaults to asserting _successful_ execution.
+    pub fn example<S: AsRef<OsStr>>(name: S) -> Self {
+        Assert {
+            cmd: vec![
+                OsStr::new("cargo"),
+                OsStr::new("run"),
+                #[cfg(not(debug_assertions))]
+                OsStr::new("--release"),
+                OsStr::new("--quiet"),
+                OsStr::new("--example"),
+                name.as_ref(),
+                OsStr::new("--"),
+            ].into_iter()
+                .map(OsString::from)
+                .collect(),
+            ..Self::default()
+        }
+    }
+
     /// Run a custom command.
     ///
     /// Defaults to asserting _successful_ execution.