replace build script with rustfmt and meta tests

.travis.yml

@@ -7,7 +7,11 @@ env:
     - RUST_BACKTRACE=1
     - secure: E33II/ctVUNigc5wuh153OX/7RUje43G3I9i5+PibEiFPCpKIJpHZA9LfKHABqOBVPgBLdWkretWgKn4Whfb9e2NMC8Nzn8Pch68b7yPZ2Ee0zLWr2M2gJ95PwTn3ZyFaMuZOAa+TgEU9buVIXTdgM+FHK+jXwU0qqNL2XCF5YM=
 
+before_script:
+  - rustup component add rustfmt-preview
+
 script:
+  - cargo fmt --all -- --write-mode=diff
   - cargo build
   - cargo test --all
 

CONTRIBUTING.md

@@ -79,9 +79,9 @@ Not sure how to help?
 
 * Your code should build without warnings on latest nightly provided by [`rustup.rs`](https://rustup.rs).
 
-* Please, use [`rustfmt`](https://github.com/rust-lang-nursery/rustfmt) on your code.
+* Use [`rustfmt`](https://github.com/rust-lang-nursery/rustfmt) on your code. If your formatting does not match `rustfmt`, the build will fail.
 
-    You can install the tool with `cargo install rustfmt`. See `rustfmt --help` for more information. If you're having trouble getting `rustfmt` to work, try to keep your contributions adherent to the official style guide which you can see at [this location](http://doc.rust-lang.org/nightly/style/). Note the style guide is still a work-in-progress.
+    You can install the tool with `rustup component add rustfmt-preview`. See `cargo fmt --help` for more information.
 
 * Stage your changes for commit, adding new and modified files to it:
 

Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "rust-rosetta"
 version = "0.0.1"
-build = "build.rs"
 authors = [
     "Andrew Hobden, https://github.com/Hoverbear",
     "Adolfo Ochagavía, https://github.com/aochagavia",
@@ -84,11 +83,9 @@ serde = "1"
 serde_json = "1"
 term = "0.4"
 
-[build-dependencies]
-failure = "0.1"
-meta = { path = "meta" }
+[dev-dependencies]
+lazy_static = "1"
 toml = "0.4"
-unicode-segmentation = "1"
 
 [workspace]
 members = [

tests/meta.rs

@@ -0,0 +1,45 @@
+#![feature(fs_read_write)]
+
+#[macro_use]
+extern crate lazy_static;
+extern crate meta;
+extern crate toml;
+
+use std::fs;
+use std::path::{Path, PathBuf};
+
+use meta::local;
+use toml::Value;
+
+lazy_static! {
+    static ref MANIFEST_PATH: PathBuf = Path::new(env!("CARGO_MANIFEST_DIR")).join("Cargo.toml");
+}
+
+#[test]
+fn tasks_are_sorted() {
+    let toml: Value = fs::read_to_string(&*MANIFEST_PATH)
+        .unwrap()
+        .parse()
+        .unwrap();
+    let members = toml.get("workspace")
+        .and_then(|w| w.get("members"))
+        .and_then(|m| m.as_array())
+        .unwrap()
+        .iter()
+        .flat_map(|m| m.as_str())
+        .collect::<Vec<_>>();
+
+    let mut sorted_members = members.clone();
+    sorted_members.sort_unstable();
+
+    for (member, sorted_member) in members.iter().zip(sorted_members) {
+        if *member != sorted_member {
+            panic!("{} is not in the correct order in `Cargo.toml`!", member);
+        }
+    }
+}
+
+#[test]
+fn parse_local_tasks() {
+    local::parse_tasks(&*MANIFEST_PATH).unwrap();
+}