Add Ubuntu test runner (#49)

Added missing main.swift for Linux tests.

Author: cgrindel

.github/actions/build_and_test/action.yml

@@ -0,0 +1,24 @@
+name: Build and Test
+
+runs:
+  using: composite
+  steps:
+    - name: Execute Tests
+      shell: bash
+      run: |
+        bazelisk test //... 
+
+    - name: Build Anything Not Tested
+      shell: bash
+      run: |
+        bazelisk build //... 
+
+    - name: Ensure all packages have bzlformat checks
+      shell: bash
+      run: |
+        bazelisk run //:bzlformat_missing_pkgs_test
+
+    - name: Execute Integration Tests
+      shell: bash
+      run: |
+        bazelisk test //:all_integration_tests

.github/workflows/ci.yml

@@ -6,32 +6,42 @@ on:
 
 jobs:
   macos_build:
-
     runs-on: macos-11.0
-
     steps:
     - uses: actions/checkout@v2
-
     - uses: cgrindel/gha_set_up_bazel@v1
       with:
         repo_name: rules_swiftformat
+    - uses: ./.github/actions/build_and_test
 
-    - name: Execute Tests
-      shell: bash
-      run: |
-        bazelisk test //... 
-
-    - name: Build Anything Not Tested
-      shell: bash
-      run: |
-        bazelisk build //... 
-
-    - name: Ensure all packages have bzlformat checks
+  ubuntu_build:
+    runs-on: ubuntu-20.04
+    env:
+      CC: clang
+    steps:
+    - uses: cgrindel/gha_install_swift_on_ubuntu@v1
+      with:
+        swift_release_tag: "swift-5.5.2-RELEASE"
+        ubuntu_version: "20.04"
+    - uses: actions/checkout@v2
+    - uses: cgrindel/gha_set_up_bazel@v1
+      with:
+        repo_name: rules_swiftformat
+    - name: Update local.bazelrc with Linux Flags
       shell: bash
       run: |
-        bazelisk run //:bzlformat_missing_pkgs_test
+        cat >> "local.bazelrc" <<EOF
+        # Need to expose the PATH so that the Swift toolchain can be found
+        build --action_env=PATH
+        EOF
+    - uses: ./.github/actions/build_and_test
+
+  all_ci_tests:
+    runs-on: ubuntu-20.04
+    needs: [macos_build, ubuntu_build]
+    steps:
+      - name: All is Well
+        shell: bash
+        run: |
+          echo "All is well!"
 
-    - name: Execute Integration Tests
-      shell: bash
-      run: |
-        bazelisk test //:all_integration_tests

.gitignore

@@ -1,3 +1,5 @@
 # Ignore Bazel symlinks
 bazel-*
 
+# The local.bazelrc is machine-specific.
+local.bazelrc

examples/exclude_files/Tests/FooTests/MessageTests.swift

@@ -7,4 +7,8 @@ class MessageTests: XCTestCase {
     let msg = Message(value: value)
     XCTAssertEqual(msg.value, value)
   }
+
+  static var allTests = [
+    ("test_init", test_init),
+  ]
 }

examples/exclude_files/Tests/FooTests/PoorlyFormattedTests.swift

@@ -9,4 +9,7 @@ import XCTest
             pfmt.name = value
             XCTAssertEqual(pfmt.name, value)
         }
+      static var allTests = [
+        ("test_init", test_init),
+      ]
     }

examples/exclude_files/Tests/FooTests/main.swift

@@ -0,0 +1,8 @@
+#if os(Linux)
+  import XCTest
+
+  XCTMain([
+    testCase(MessageTests.allTests),
+    testCase(PoorlyFormattedTests.allTests),
+  ])
+#endif

examples/rules_swift_helpers/Tests/FooTests/MessageTests.swift

@@ -7,4 +7,8 @@ class MessageTests: XCTestCase {
     let msg = Message(value: value)
     XCTAssertEqual(msg.value, value)
   }
+
+  static var allTests = [
+    ("test_init", test_init),
+  ]
 }

examples/rules_swift_helpers/Tests/FooTests/main.swift

@@ -0,0 +1,7 @@
+#if os(Linux)
+  import XCTest
+
+  XCTMain([
+    testCase(MessageTests.allTests),
+  ])
+#endif