add multiple OSes to bazel workflow (#1412)

* add multiple OSes to bazel workflow

* correct indent

* only set copts when they're supported by the OS

* os check should work

* pull out cxx03_test for per-platform stuff

* attempt to fix windows test output

.github/workflows/bazel.yml

@@ -5,8 +5,13 @@ on:
   pull_request: {}
 
 jobs:
-  build-and-test:
-    runs-on: ubuntu-latest
+  job:
+    name: bazel.${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-2022]
 
     steps:
     - uses: actions/checkout@v1
@@ -17,9 +22,9 @@ jobs:
         cache-name: bazel-cache
       with:
         path: "~/.cache/bazel"
-        key: ${{ env.cache-name }}-${{ runner.os }}-${{ github.ref }}
+        key: ${{ env.cache-name }}-${{ matrix.os }}-${{ github.ref }}
         restore-keys: |
-          ${{ env.cache-name }}-${{ runner.os }}-main
+          ${{ env.cache-name }}-${{ matrix.os }}-main
 
     - name: build
       run: |

test/BUILD

@@ -1,3 +1,12 @@
+load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
+
+platform(
+    name = "windows",
+    constraint_values = [
+        "@platforms//os:windows",
+    ],
+)
+
 TEST_COPTS = [
     "-pedantic",
     "-pedantic-errors",
@@ -11,11 +20,10 @@ TEST_COPTS = [
     "-fstrict-aliasing",
 ]
 
-PER_SRC_COPTS = ({
-    "cxx03_test.cc": ["-std=c++03"],
-    # Some of the issues with DoNotOptimize only occur when optimization is enabled
+# Some of the issues with DoNotOptimize only occur when optimization is enabled
+PER_SRC_COPTS = {
     "donotoptimize_test.cc": ["-O3"],
-})
+}
 
 TEST_ARGS = ["--benchmark_min_time=0.01"]
 
@@ -26,14 +34,15 @@ PER_SRC_TEST_ARGS = ({
     "spec_arg_verbosity_test.cc" : ["--v=42"],
 })
 
-load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
-
 cc_library(
     name = "output_test_helper",
     testonly = 1,
     srcs = ["output_test_helper.cc"],
     hdrs = ["output_test.h"],
-    copts = TEST_COPTS,
+    copts = select({
+        "//:windows": [],
+        "//conditions:default": TEST_COPTS,
+    }),
     deps = [
         "//:benchmark",
         "//:benchmark_internal_headers",
@@ -46,7 +55,10 @@ cc_library(
         size = "small",
         srcs = [test_src],
         args = TEST_ARGS + PER_SRC_TEST_ARGS.get(test_src, []),
-        copts = TEST_COPTS + PER_SRC_COPTS.get(test_src, []),
+        copts = select({
+            "//:windows": [],
+            "//conditions:default": TEST_COPTS,
+        }) + PER_SRC_COPTS.get(test_src, []) ,
         deps = [
             ":output_test_helper",
             "//:benchmark",
@@ -62,15 +74,37 @@ cc_library(
         ["*test.cc"],
         exclude = [
             "*_assembly_test.cc",
+            "cxx03_test.cc",
             "link_main_test.cc",
         ],
     )
 ]
 
+cc_test(
+    name = "cxx03_test",
+    size = "small",
+    srcs = ["cxx03_test.cc"],
+    copts = TEST_COPTS + ["-std=c++03"],
+    deps = [
+        ":output_test_helper",
+        "//:benchmark",
+        "//:benchmark_internal_headers",
+        "@com_google_googletest//:gtest",
+        "@com_google_googletest//:gtest_main",
+    ],
+    target_compatible_with = select({
+        "//:windows": ["@platforms//:incompatible"],
+        "//conditions:default": [],
+    })
+)
+
 cc_test(
     name = "link_main_test",
     size = "small",
     srcs = ["link_main_test.cc"],
-    copts = TEST_COPTS,
+    copts = select({
+        "//:windows": [],
+        "//conditions:default": TEST_COPTS,
+    }),
     deps = ["//:benchmark_main"],
 )

test/reporter_output_test.cc

@@ -17,7 +17,7 @@ static int AddContextCases() {
   AddCases(TC_ConsoleErr,
            {
                {"^%int-%int-%intT%int:%int:%int[-+]%int:%int$", MR_Default},
-               {"Running .*/reporter_output_test(\\.exe)?$", MR_Next},
+               {"Running .*(/|\\\\)reporter_output_test(\\.exe)?$", MR_Next},
                {"Run on \\(%int X %float MHz CPU s?\\)", MR_Next},
            });
   AddCases(TC_JSONOut,