tests/integration/fission_tests.sh

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"