From dfef5ee1e548d793d1b8ece080f99587a9ab4b05 Mon Sep 17 00:00:00 2001
From: Rob Young <rob@robyoung.digital>
Date: Wed, 21 Apr 2021 22:26:27 +0100
Subject: [PATCH] Update CI for nrf-rs

- Test against multiple rust versions
- Determine minimum supported rust version and test against that
- Use cargo build --examples for examples

The steps have been mostly lifted from nrf-rs/nrf52-dk.
I've gone with using cargo directly rather than actions-rs/cargo as
it's easier for people to copy for running locally.
---
 .github/scripts/build-examples.sh | 19 -------------------
 .github/workflows/ci.yaml         | 20 ++++++++++++++------
 2 files changed, 14 insertions(+), 25 deletions(-)
 delete mode 100755 .github/scripts/build-examples.sh

diff --git a/.github/scripts/build-examples.sh b/.github/scripts/build-examples.sh
deleted file mode 100755
index fc4bdf55..00000000
--- a/.github/scripts/build-examples.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/usr/bin/env bash
-
-_status=0
-
-for example in $(ls examples | sed s/\.rs$//); do
-  output=$(cargo build --target=thumbv6m-none-eabi --example=$example --color=always 2>&1)
-  result=$?
-
-  if [[ $result == 0 ]]; then
-    echo "::group::✅ $example ok"
-  else
-    echo "::group::💥 $example fail"
-    _status=1
-  fi
-  echo "$output"
-  echo "::endgroup::"
-done
-
-exit $_status
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 46ac113f..f5700ed6 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -9,28 +9,36 @@ jobs:
   build:
     runs-on: ubuntu-latest
 
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - beta
+          - nightly
+          - 1.51.0  # Minimum supported rust version (MSRV)
+
     steps:
       - uses: actions/checkout@v2
 
       - name: Install Rust
         uses: actions-rs/toolchain@v1
         with:
-          toolchain: stable
           profile: minimal
-          target: thumbv6m-none-eabi
+          toolchain: ${{ matrix.rust }}
           override: true
+          target: thumbv6m-none-eabi
           components: rustfmt, clippy
 
       - name: rustfmt
         run: cargo fmt -- --check
 
-      - name: clippy
-        run: cargo clippy --color=always -- -D warnings
-
       - name: build
         run: cargo build --target=thumbv6m-none-eabi
 
+      - name: clippy
+        run: cargo clippy --color=always -- -D warnings
+
       - name: build examples
-        run: .github/scripts/build-examples.sh
+        run: cargo build --examples --target=thumbv6m-none-eabi