test-execute: Add tests for new PassEnvironment= directive

Check the base case, plus erasing the list, listing the same variable
name more than once and when variables are absent from the manager
execution environment.

Confirmed that `sudo ./test-execute` passes and that modifying the test
cases (or the values of the set variables in test-execute.c) is enough
to make the test cases fail.

1 files changed, 14 insertions, 0 deletions

diff --git a/src/test/test-execute.c b/src/test/test-execute.c
index e2ec53ee51..baf7926cab 100644
--- a/src/test/test-execute.c
+++ b/src/test/test-execute.c
@@ -168,6 +168,19 @@ static void test_exec_environmentfile(Manager *m) {
         unlink("/tmp/test-exec_environmentfile.conf");
 }
 
+static void test_exec_passenvironment(Manager *m) {
+        assert_se(setenv("VAR1", "word1 word2", 1) == 0);
+        assert_se(setenv("VAR2", "word3", 1) == 0);
+        assert_se(setenv("VAR3", "$word 5 6", 1) == 0);
+        test(m, "exec-passenvironment.service", 0, CLD_EXITED);
+        test(m, "exec-passenvironment-repeated.service", 0, CLD_EXITED);
+        test(m, "exec-passenvironment-empty.service", 0, CLD_EXITED);
+        assert_se(unsetenv("VAR1") == 0);
+        assert_se(unsetenv("VAR2") == 0);
+        assert_se(unsetenv("VAR3") == 0);
+        test(m, "exec-passenvironment-absent.service", 0, CLD_EXITED);
+}
+
 static void test_exec_umask(Manager *m) {
         test(m, "exec-umask-default.service", 0, CLD_EXITED);
         test(m, "exec-umask-0177.service", 0, CLD_EXITED);
@@ -237,6 +250,7 @@ int main(int argc, char *argv[]) {
                 test_exec_group,
                 test_exec_environment,
                 test_exec_environmentfile,
+                test_exec_passenvironment,
                 test_exec_umask,
                 test_exec_runtimedirectory,
                 test_exec_capabilityboundingset,