Use Skeptic to compile tests in README.md

.gitignore

@@ -1,3 +1,4 @@
 /target
 **/*.rs.bk
-Cargo.lock
+Cargo.lock
+libtest.rmeta

Cargo.toml

@@ -16,3 +16,9 @@ travis-ci = { repository = "phw/rust-discid" }
 [dependencies]
 bitflags = "1.0.4"
 discid-sys = "0.2.0"
+
+[build-dependencies]
+skeptic = "0.13"
+
+[dev-dependencies]
+skeptic = "0.13"

README.md

@@ -18,26 +18,30 @@ This library is currently in early development and the API may still change.
 
 ### Read only the TOC
 
-```rust
+```rust,no_run
 use discid::DiscId;
 
-// Specifying the device is optional. If set to `None` a platform
-// specific default will be used.
-let device = Some("/dev/cdrom");
-let disc = DiscId::read(device).expect("Reading disc failed");
-println!("ID: {}", disc.id());
+fn main() {
+  // Specifying the device is optional. If set to `None` a platform
+  // specific default will be used.
+  let device = Some("/dev/cdrom");
+  let disc = DiscId::read(device).expect("Reading disc failed");
+  println!("ID: {}", disc.id());
+}
 ```
 
 ### Read the TOC and ISRCs
 
-```rust
+```rust,no_run
 use discid::{DiscId, Features};
 
-let disc = DiscId::read_features(None, Features::ISRC).expect("Reading disc failed");
-println!("Disc ID: {}", disc.id());
+fn main() {
+  let disc = DiscId::read_features(None, Features::ISRC).expect("Reading disc failed");
+  println!("Disc ID: {}", disc.id());
 
-for track in disc.tracks() {
+  for track in disc.tracks() {
     println!("Track #{} ISRC: {}", track.number, track.isrc);
+  }
 }
 ```
 

build.rs

@@ -0,0 +1,6 @@
+extern crate skeptic;
+
+fn main() {
+    // generates doc tests for `README.md`.
+    skeptic::generate_doc_tests(&["README.md"]);
+}

tests/skeptic.rs

@@ -0,0 +1 @@
+include!(concat!(env!("OUT_DIR"), "/skeptic-tests.rs"));