Move C++ dwp/fission tests to rules_cc.

PiperOrigin-RevId: 943211855
Change-Id: I45afcb18335a7a3451627c232a3844ebbca48912

cc/BUILD

diff --git a/cc/BUILD b/cc/BUILD
index 8a34a55..6e68abd 100644
--- a/cc/BUILD
+++ b/cc/BUILD
@@ -79,6 +79,7 @@
         "//cc/common:srcs",
         "//cc/private:srcs",
         "//cc/proto:srcs",
+        "//cc/settings:srcs",
         "//cc/toolchains:srcs",
         "@bazel_skylib//:test_deps",
     ],

cc/private/BUILD

diff --git a/cc/private/BUILD b/cc/private/BUILD
index 252792d..cb150f0 100644
--- a/cc/private/BUILD
+++ b/cc/private/BUILD
@@ -35,6 +35,7 @@
         "*.bzl",
     ]) + [
         "//cc/private/compile:srcs",
+        "//cc/private/coverage:srcs",
         "//cc/private/link:srcs",
         "//cc/private/rules_impl:srcs",
         "//cc/private/toolchain:srcs",

cc/private/coverage/BUILD.bazel

diff --git a/cc/private/coverage/BUILD.bazel b/cc/private/coverage/BUILD.bazel
index d54f53f..7a5370e 100644
--- a/cc/private/coverage/BUILD.bazel
+++ b/cc/private/coverage/BUILD.bazel
@@ -13,3 +13,11 @@
     }),
     visibility = ["//visibility:public"],
 )
+
+filegroup(
+    name = "srcs",
+    srcs = glob([
+        "**",
+    ]),
+    visibility = ["//visibility:public"],
+)

cc/settings/BUILD

diff --git a/cc/settings/BUILD b/cc/settings/BUILD
index 9cb302f..953ea49 100644
--- a/cc/settings/BUILD
+++ b/cc/settings/BUILD
@@ -24,3 +24,11 @@
     build_setting_default = ":default_apple_constraint",
     visibility = ["//visibility:public"],
 )
+
+filegroup(
+    name = "srcs",
+    srcs = glob([
+        "**/BUILD",
+    ]),
+    visibility = ["//visibility:public"],
+)

tests/integration/BUILD

diff --git a/tests/integration/BUILD b/tests/integration/BUILD
index c09ac87..b292aa2 100644
--- a/tests/integration/BUILD
+++ b/tests/integration/BUILD
@@ -34,6 +34,16 @@
     test_script = "cc_shared_library_tests.sh",
 )
 
+rules_cc_integration_test(
+    name = "fission_tests",
+    target_compatible_with = select({
+        "@platforms//os:macos": ["@platforms//:incompatible"],
+        "@platforms//os:windows": ["@platforms//:incompatible"],
+        "//conditions:default": [],
+    }),
+    test_script = "fission_tests.sh",
+)
+
 VERSION_GATE = [] if bazel_features.cc.cc_common_is_in_rules_cc else ["@platforms//:incompatible"]  # copybara-uncomment-this-please
 # VERSION_GATE = ["@platforms//:incompatible"]  # copybara-comment-this-out-please
 

tests/integration/fission_tests.sh

diff --git a/tests/integration/fission_tests.sh b/tests/integration/fission_tests.sh
new file mode 100755
index 0000000..5299da1
--- /dev/null
+++ b/tests/integration/fission_tests.sh
@@ -0,0 +1,79 @@
+set -euo pipefail
+
+source "$(rlocation rules_cc/tests/test_utils.sh)"
+source "$(rlocation rules_cc/tests/unittest.bash)"
+
+function generate_fission_build_files() {
+  mkdir -p a
+  cat > a/BUILD << EOF
+load("@rules_cc//cc:cc_binary.bzl", "cc_binary")
+load("@rules_cc//cc:cc_library.bzl", "cc_library")
+cc_binary(name = "main",
+  srcs = ["main.cc"],
+  deps = [":dep"]
+)
+cc_library(name = "dep",
+  srcs = ["dep.cc"]
+)
+EOF
+
+  cat > a/main.cc << EOF
+#include <iostream>
+int dep();
+int main(int argc, char** argv) {
+  dep();
+}
+EOF
+
+  cat > a/dep.cc << EOF
+int dep() {
+  return 4;
+}
+EOF
+}
+
+# Tests that under --fission, non-empty .dwp outputs are generated.
+function test_fission_dwp() {
+  generate_fission_build_files
+  bazel build --fission=yes //a:main.dwp >& "${TEST_log}" ||
+    fail "Build failed"
+  maindwp=bazel-bin/a/main.dwp
+  [[ -e "$maindwp" ]] || fail "main.dwp not found"
+  [[ -s "$maindwp" ]] || fail "main.dwp is empty"
+}
+
+# Tests that under --fission=no, .dwp outputs exist, but are empty.
+function test_nofission_dwp() {
+  generate_fission_build_files
+  bazel build --fission=no //a:main.dwp >& "${TEST_log}" || fail "Build failed"
+  maindwp=bazel-bin/a/main.dwp
+  [[ -e "$maindwp" ]] || fail "main.dwp not found"
+  [[ ! -s "$maindwp" ]] || fail "main.dwp is non-empty"
+}
+
+# Tests .dwp outputs are generated by cc_test
+function test_cpp_test_fission_dwp() {
+  mkdir -p a
+  cat > a/BUILD << EOF
+load("@rules_cc//cc:cc_test.bzl", "cc_test")
+cc_test(
+  name = "test",
+  srcs = ["test.cc"],
+)
+EOF
+
+  cat > a/test.cc << EOF
+#include <iostream>
+int main(int argc, char** argv) {
+  std::cout << "This is a test.\n";
+}
+EOF
+
+  bazel build --fission=yes //a:test.dwp >& "${TEST_log}" ||
+    fail "Build failed"
+  testdwp=bazel-bin/a/test.dwp
+  [[ -e "$testdwp" ]] || fail "test.dwp not found"
+  [[ -s "$testdwp" ]] || fail "test.dwp is empty"
+}
+
+run_suite "Integration tests for fission with rules_cc"