Add CI pipelines to run all examples using openblas (#1)

* Add CI pipelines to run all examples using openblas

* Point to the right script

* Another stupid typo

* Cargo fmt

* Use proper bash if statement

Author: LukeMathWalker

.travis.yml

@@ -0,0 +1,34 @@
+language: rust
+# use trusty for newer openblas
+sudo: required
+dist: trusty
+matrix:
+  include:
+    - rust: 1.32.0
+      env:
+        - FEATURES='openblas'
+        - RUSTFLAGS='-D warnings'
+    - rust: stable
+      env:
+        - FEATURES='openblas'
+        - RUSTFLAGS='-D warnings'
+    - rust: beta
+      env:
+        - FEATURES='openblas'
+        - CHANNEL='beta'
+        - RUSTFLAGS='-D warnings'
+    - rust: nightly
+      env:
+        - FEATURES='openblas'
+        - CHANNEL='nightly'
+env:
+  global:
+    - HOST=x86_64-unknown-linux-gnu
+    - CARGO_INCREMENTAL=0
+addons:
+  apt:
+    packages:
+      - libopenblas-dev
+      - gfortran
+script:
+  - ./test.sh "$FEATURES" "$CHANNEL"

linear_regression/src/lib.rs

@@ -62,8 +62,8 @@ impl LinearRegression {
     ///
     /// **Panics** if `self` has not be `fit`ted before calling `predict.
     pub fn predict<A>(&self, X: &ArrayBase<A, Ix2>) -> Array1<f64>
-        where
-            A: Data<Elem = f64>,
+    where
+        A: Data<Elem = f64>,
     {
         let (n_samples, _) = X.dim();
 

linear_regression/src/main.rs

@@ -1,8 +1,8 @@
 #![allow(non_snake_case)]
-use ndarray::{Array1, Array2, Array, Axis};
+use ndarray::{Array, Array1, Array2, Axis};
 use ndarray_linalg::random;
-use ndarray_stats::DeviationExt;
 use ndarray_rand::RandomExt;
+use ndarray_stats::DeviationExt;
 use rand::distributions::StandardNormal;
 
 // Import LinearRegression from other file ("lib.rs") in this example

test.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+set -x
+set -e
+
+FEATURES=$1
+CHANNEL=$2
+
+if [[ "$CHANNEL" != "beta" ]]; then
+    rustup component add rustfmt
+    cargo fmt --all -- --check
+    rustup component add clippy
+fi
+
+# Loop over the directories in the project, skipping the target directory
+for f in *; do
+    if [[ -d ${f} ]] && [[ ${f} != "target" ]]; then
+        # Will not run if no directories are available
+        echo "\n\nTesting '${f}' example.\n\n"
+        cd ${f}
+        cargo run --features "${FEATURES}"
+        if [[ "$CHANNEL" != "beta" ]]; then
+            cargo clippy -- -D warnings
+        fi
+        cd ..
+    fi
+done
+