ci: Add MacOS ARM support (#451)

The target platform is explicitly noted so that the CI will flag up
if/when GitHub runners change their defaults. This ensures we're very
explicitly doing both an x64 and ARM build for MacOS instead of
accidentally doing only ARM if/when the defaults are changed.

.github/workflows/ci.yml

@@ -16,7 +16,12 @@ jobs:
         os:
           - windows-latest
           - ubuntu-latest
-          - macos-latest
+          - macos-12
+          - macos-14
+        include:
+          - arch: x64
+          - arch: ARM64
+            os: macos-14
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
@@ -36,7 +41,7 @@ jobs:
         run: dotnet build --no-restore
 
       - name: Test
-        run: dotnet test --no-build --verbosity normal -- RunConfiguration.TargetPlatform=x64
+        run: dotnet test --no-build --verbosity normal -- RunConfiguration.TargetPlatform=${{matrix.arch}}
 
       - name: Pack
         if: matrix.os == 'windows-latest'

README.md

@@ -241,7 +241,7 @@ Due to using a shared native library instead of C# for the main Pact logic only
 | Linux (libc) | x64         | ✔️ Yes                                                             |
 | Linux (musl) | Any         | ❌ [No](https://github.com/pact-foundation/pact-net/issues/374)    |
 | OSX          | x64         | ✔️ Yes                                                             |
-| OSX          | ARM (M1/M2) | ⚠️ [Alpha](https://github.com/pact-foundation/pact-net/issues/451) |
+| OSX          | ARM (M1/M2) | ✔️ Yes                                                             |
 
 ### Pact Specification
 

docs/upgrading-to-5.md

@@ -127,3 +127,8 @@ Minimum Supported .Net Framework Version
 
 The minimum supported version of .Net Framework is now 4.6.2 instead of 4.6.1 in line with the minimum supported version in
 `System.Text.Json`.
+
+MacOS ARM64 Full Support
+------------------------
+
+MacOS now has full x86-64 and ARM support.