Add support for recording/running ref tests

Ref tests use a recording of the terminal protocol and a serialization
of the grid state to check that the parsing and action handling systems
produce the correct result. Ref tests may be recorded by running
alacritty with `--ref-test` and closing the terminal by using the window
"X" button. At that point, the recording is fully written to disk, and a
serialization of important state is recorded. Those files should be
moved to an appropriate folder in the `tests/ref/` tree, and the
`ref_test!` macro invocation should be updated accordingly.

A couple of changes were necessary to make this work:

* Ref tests shouldn't create a pty; the pty was refactored out of the
  `Term` type.
* Repeatable lines/cols were needed; on startup, the terminal is resized
* by default to 80x24 though that may be changed by passing
  `--dimensions w h`.
* Calculating window size based on desired rows/columns and font metrics
  required making load_font callable multiple times.
* Refactor types into library crate so they may be imported in an
  integration test.
* A whole bunch of types needed symmetric serialization and
  deserialization. Mostly this was just adding derives, but the custom
  deserialization of Rgb had to change to a deserialize_with function.

This initially adds one ref test as a sanity check, and more will be
added in subsequent commits. This initial ref tests just starts the
terminal and runs `ll`.

1 files changed, 98 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 00000000..8052ce07
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,98 @@
+// Copyright 2016 Joe Wilm, The Alacritty Project Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//! Alacritty - The GPU Enhanced Terminal
+#![feature(question_mark)]
+#![feature(range_contains)]
+#![feature(inclusive_range_syntax)]
+#![feature(drop_types_in_const)]
+#![feature(unicode)]
+#![feature(step_trait)]
+#![feature(core_intrinsics)]
+#![allow(stable_features)] // lying about question_mark because 1.14.0 isn't released!
+
+#![feature(proc_macro)]
+
+#[macro_use]
+extern crate serde_derive;
+
+extern crate cgmath;
+extern crate copypasta;
+extern crate errno;
+extern crate font;
+extern crate glutin;
+extern crate libc;
+extern crate mio;
+extern crate notify;
+extern crate parking_lot;
+extern crate serde;
+extern crate serde_json;
+extern crate serde_yaml;
+extern crate vte;
+
+#[macro_use]
+extern crate bitflags;
+
+#[macro_use]
+pub mod macros;
+
+pub mod event;
+pub mod event_loop;
+pub mod index;
+pub mod input;
+pub mod meter;
+pub mod renderer;
+pub mod sync;
+pub mod term;
+pub mod tty;
+pub mod util;
+pub mod ansi;
+pub mod config;
+pub mod grid;
+
+use std::sync::Arc;
+use std::sync::atomic::{AtomicBool, Ordering};
+
+pub use grid::Grid;
+pub use term::Term;
+
+#[derive(Debug, Eq, PartialEq, Copy, Clone, Default, Serialize, Deserialize)]
+pub struct Rgb {
+    pub r: u8,
+    pub g: u8,
+    pub b: u8,
+}
+
+pub mod gl {
+    #![allow(non_upper_case_globals)]
+    include!(concat!(env!("OUT_DIR"), "/gl_bindings.rs"));
+}
+
+#[derive(Clone)]
+pub struct Flag(pub Arc<AtomicBool>);
+impl Flag {
+    pub fn new(initial_value: bool) -> Flag {
+        Flag(Arc::new(AtomicBool::new(initial_value)))
+    }
+
+    #[inline]
+    pub fn get(&self) -> bool {
+        self.0.load(Ordering::Acquire)
+    }
+
+    #[inline]
+    pub fn set(&self, value: bool) {
+        self.0.store(value, Ordering::Release)
+    }
+}