1 files changed, 40 insertions, 0 deletions
diff --git a/tests/test_main.c b/tests/test_main.c
new file mode 100644
index 0000000..e16435d
--- /dev/null
+++ b/tests/test_main.c
@@ -0,0 +1,40 @@
+#include "vendor/unity/src/unity.h"
+
+void test_entry_duration_seconds_handles_invalid_ranges(void);
+void test_stage_thresholds_and_labels(void);
+void test_formatters_clamp_negative_and_format_values(void);
+void test_running_fast_at_target_logic(void);
+void test_local_day_start_returns_midnight_utc(void);
+void test_streak_empty_input_resets_all_fields(void);
+void test_streak_single_recent_completion_sets_current_and_longest(void);
+void test_streak_longest_can_exceed_current_when_sequence_breaks(void);
+void test_streak_drops_to_zero_after_missing_more_than_one_day(void);
+
+void test_csv_append_text_plain_and_escaped_values(void);
+void test_csv_append_int_appends_number_text(void);
+void test_format_history_csv_header_and_row_with_escaping(void);
+void test_format_history_csv_row_null_entry_returns_empty(void);
+
+void setUp(void) {}
+void tearDown(void) {}
+
+int main(void) {
+  UNITY_BEGIN();
+
+  RUN_TEST(test_entry_duration_seconds_handles_invalid_ranges);
+  RUN_TEST(test_stage_thresholds_and_labels);
+  RUN_TEST(test_formatters_clamp_negative_and_format_values);
+  RUN_TEST(test_running_fast_at_target_logic);
+  RUN_TEST(test_local_day_start_returns_midnight_utc);
+  RUN_TEST(test_streak_empty_input_resets_all_fields);
+  RUN_TEST(test_streak_single_recent_completion_sets_current_and_longest);
+  RUN_TEST(test_streak_longest_can_exceed_current_when_sequence_breaks);
+  RUN_TEST(test_streak_drops_to_zero_after_missing_more_than_one_day);
+
+  RUN_TEST(test_csv_append_text_plain_and_escaped_values);
+  RUN_TEST(test_csv_append_int_appends_number_text);
+  RUN_TEST(test_format_history_csv_header_and_row_with_escaping);
+  RUN_TEST(test_format_history_csv_row_null_entry_returns_empty);
+
+  return UNITY_END();
+}