test fork failure in aborts(...) (#18)

Change-Id: Ib254785f7904c5a8d6d04d599e482a4602818a37

test/BUILD.bazel

@@ -248,6 +248,19 @@ skytest_test(
     ],
 )
 
+skytest_test(
+    name = "aborts_with_failed_fork_test",
+    srcs = [
+        "aborts_with_failed_fork_test.cpp",
+        "failing_fork.cpp",
+    ],
+    return_code = 1,
+    stdout = [
+        "unable to fork process",
+        "0 tests passed.*1 test failed",
+    ],
+)
+
 cc_library(
     name = "no_malloc",
     srcs = ["no_malloc.cpp"],

test/aborts_with_failed_fork_test.cpp

@@ -0,0 +1,10 @@
+#include "skytest/skytest.hpp"
+
+auto main() -> int
+{
+  using namespace ::skytest::literals;
+  using ::skytest::aborts;
+  using ::skytest::expect;
+
+  "fork fails"_test = [] { return expect(aborts([] {})); };
+}

test/failing_fork.cpp

@@ -0,0 +1,8 @@
+#include <unistd.h>
+
+extern "C" {
+auto fork() -> pid_t
+{
+  return -1;
+}
+}