Add a basic test crate for no_std

.travis.yml

@@ -25,6 +25,11 @@ script:
   - cargo test -v --features strict
   - bash ../scripts/test_features.sh
 
+  - if [ "$TRAVIS_RUST_VERSION" = "nightly" ]; then
+      cd ../no_std_test;
+      cargo build -v;
+    fi
+
   - cd ..
   - cargo doc
 after_success:

Cargo.toml

@@ -1,5 +1,8 @@
 [workspace]
 members = [
     "palette",
-    "palette_derive"
+    "palette_derive",
+
+    # Test crates
+    "no_std_test"
 ]

no_std_test/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "no_std_test"
+version = "0.0.0"
+authors = ["Erik Hedvall <hello@erikhedvall.nu>"]
+exclude = []
+description = "Test crate for #[no_std]."
+repository = "/~https://github.com/Ogeon/palette"
+license = "MIT OR Apache-2.0"
+
+[dependencies.palette]
+path = "../palette"
+default-features = false
+features = ["named"]

no_std_test/LICENSE-APACHE

@@ -0,0 +1 @@
+../LICENSE-APACHE

no_std_test/LICENSE-MIT

@@ -0,0 +1 @@
+../LICENSE-MIT

no_std_test/src/main.rs

@@ -0,0 +1,26 @@
+#![feature(lang_items, start, link_args)]
+#![no_std]
+
+// A bit of a hack to make the linking go through.
+// This binary is not meant to be used, only to be compiled.
+#![allow(unused_attributes)]
+#![link_args="-nostdlib"]
+
+extern crate palette;
+
+use core::panic::PanicInfo;
+
+#[start]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    let _magenta = palette::Srgb::new(255u8, 0, 255);
+
+    0
+}
+
+#[lang = "eh_personality"]
+extern fn eh_personality() {}
+
+#[panic_handler]
+fn panic(_info: &PanicInfo) -> ! {
+    loop {}
+}