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+// Author:  cirakg & claude ai
+// Summary: Smoke test proving the unit-test pipeline works end to end.
+//
+// SmokeTest: proves the unit-test pipeline works end to end: compile with
+// --unit-test, run in the headless simulator, parse the results with
+// tools/ciq_test_report.py. The real test suites start with milestone M2.
+
+import Toybox.Lang;
+import Toybox.Test;
+
+// ASCII codes of the characters a version may contain.
+const ASCII_DOT = 46;
+const ASCII_ZERO = 48;
+const ASCII_NINE = 57;
+
+// AppInfo.VERSION must look like MAJOR.MINOR.PATCH: three non-empty runs of
+// digits separated by two dots, nothing else.
+(:test)
+function smokeVersionIsSemver(logger as Test.Logger) as Boolean {
+    var dots = 0;
+    var digitsInPart = 0;
+    var chars = AppInfo.VERSION.toCharArray();
+    for (var i = 0; i < chars.size(); i++) {
+        var code = chars[i].toNumber();
+        if (code == ASCII_DOT) {
+            if (digitsInPart == 0) {
+                logger.error("empty part in version " + AppInfo.VERSION);
+                return false;
+            }
+            dots++;
+            digitsInPart = 0;
+        } else if (code >= ASCII_ZERO && code <= ASCII_NINE) {
+            digitsInPart++;
+        } else {
+            logger.error("unexpected character in version " + AppInfo.VERSION);
+            return false;
+        }
+    }
+    logger.debug("version " + AppInfo.VERSION);
+    return dots == 2 && digitsInPart > 0;
+}