Add test_environment.cmore-tests

1 files changed, 76 insertions, 0 deletions

diff --git a/tests/test_environment.c b/tests/test_environment.c
new file mode 100644
index 0000000..3418800
--- /dev/null
+++ b/tests/test_environment.c
@@ -0,0 +1,76 @@
+#include "testing.h"
+
+extern char **environ;
+
+void test_runtime_copy() {
+    RuntimeEnv *env = runtime_copy(environ);
+    STASIS_ASSERT(env->data != environ, "copied array is not unique");
+    int difference = 0;
+    for (size_t i = 0; i < strlist_count(env); i++) {
+        char *item = strlist_item(env, i);
+        if (!strstr_array(environ, item)) {
+            difference++;
+        }
+    }
+    STASIS_ASSERT(difference == 0, "copied environment is incomplete");
+    runtime_free(env);
+}
+
+void test_runtime_copy_empty() {
+    char **empty_env = calloc(1, sizeof(empty_env));
+    RuntimeEnv *env = runtime_copy(empty_env);
+    STASIS_ASSERT(env->num_inuse == 0, "copied array isn't empty");
+    GENERIC_ARRAY_FREE(empty_env);
+    runtime_free(env);
+}
+
+void test_runtime() {
+    RuntimeEnv *env = runtime_copy(environ);
+    runtime_set(env, "CUSTOM_KEY", "Very custom");
+    ssize_t idx = -1;
+    STASIS_ASSERT((idx = runtime_contains(env, "CUSTOM_KEY")) >= 0, "CUSTOM_KEY should exist in object");
+    STASIS_ASSERT(strcmp(strlist_item(env, idx), "CUSTOM_KEY=Very custom") == 0, "Incorrect index returned by runtime_contains");
+
+    const char *custom_value = runtime_get(env, "CUSTOM_KEY");
+    STASIS_ASSERT_FATAL(custom_value != NULL, "CUSTOM_KEY should not be NULL");
+    STASIS_ASSERT(strcmp(custom_value, "Very custom") == 0, "CUSTOM_KEY has incorrect data");
+    STASIS_ASSERT(strstr_array(environ, "CUSTOM_KEY") == NULL, "CUSTOM_KEY should not exist in the global environment");
+
+    runtime_apply(env);
+    const char *global_custom_value = getenv("CUSTOM_KEY");
+    STASIS_ASSERT_FATAL(global_custom_value != NULL, "CUSTOM_KEY must exist in global environment after calling runtime_apply()");
+    STASIS_ASSERT(strcmp(global_custom_value, custom_value) == 0, "local and global CUSTOM_KEY variable are supposed to be identical");
+
+    STASIS_ASSERT(setenv("CUSTOM_KEY", "modified", 1) == 0, "modifying global CUSTOM_KEY failed");
+    global_custom_value = getenv("CUSTOM_KEY");
+    STASIS_ASSERT(strcmp(global_custom_value, custom_value) != 0, "local and global CUSTOM_KEY variable are supposed to be different");
+
+    runtime_replace(&env, environ);
+    runtime_apply(env);
+
+    global_custom_value = getenv("CUSTOM_KEY");
+    custom_value = runtime_get(env, "CUSTOM_KEY");
+    STASIS_ASSERT_FATAL(custom_value != NULL, "CUSTOM_KEY must exist in local environment after calling runtime_replace()");
+    STASIS_ASSERT_FATAL(global_custom_value != NULL, "CUSTOM_KEY must exist in global environment after calling runtime_replace()");
+    STASIS_ASSERT(strcmp(global_custom_value, custom_value) == 0, "local and global CUSTOM_KEY variable are supposed to be identical");
+
+    char output_truth[BUFSIZ] = {0};
+    sprintf(output_truth, "Your PATH is '%s'.", runtime_get(env, "PATH"));
+    const char *output_expanded = runtime_expand_var(env, "Your PATH is '${PATH}'.");
+    STASIS_ASSERT(output_expanded != NULL, "expansion of PATH should not fail");
+    STASIS_ASSERT(strcmp(output_expanded, output_truth) == 0, "the expansion, and the expected result should be identical");
+
+    // TODO: runtime_export()
+    // requires dumping stdout to a file and comparing it with the current environment array
+}
+
+int main(int argc, char *argv[], char *arge[]) {
+    STASIS_TEST_BEGIN_MAIN();
+    STASIS_TEST_FUNC *tests[] = {
+        test_runtime_copy,
+        test_runtime_copy_empty,
+        test_runtime,
+    };
+    STASIS_TEST_RUN(tests);
+    STASIS_TEST_END_MAIN();
+}
\ No newline at end of file