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+// Author:  cirakg & claude ai
+// Summary: Tests for the PDF417 encoder: pdf417gen reference rows, decoding dumps of screen-fitted symbols, limits.
+
+import Toybox.Lang;
+import Toybox.Test;
+
+// README 12.4 check 1: the same rows as pdf417gen for fixed columns and
+// levels (compaction, padding, EC, row indicators and patterns).
+(:test)
+function pdf417MatchesReference(logger as Test.Logger) as Boolean {
+    var rows = CodeVectors.PDF417;
+    for (var i = 0; i < rows.size(); i++) {
+        var row = rows[i] as Array;
+        var payload = row[0] as String;
+        var result = Pdf417.encode(payload, row[1] as Number, row[2] as Number);
+        if (result instanceof Codes.CodeError) {
+            logger.error("row " + i + ": " + result.message);
+            return false;
+        }
+        var expectedRows = row[3] as Number;
+        var expectedWidth = row[4] as Number;
+        if (result.height != expectedRows || result.rowHeight != Pdf417.ROW_HEIGHT || result.width != expectedWidth) {
+            logger.error("row " + i + " '" + Text.clip(payload, 20) + "': " + result.width + " x " + result.height
+                + ", reference " + expectedWidth + " x " + expectedRows);
+            return false;
+        }
+        var got = MatrixFixtures.packedHex(result);
+        if (!got.equals(row[5] as String)) {
+            logger.error("row " + i + " '" + Text.clip(payload, 20) + "' differs");
+            return false;
+        }
+    }
+    logger.debug("CODES pdf417 reference rows=" + rows.size());
+    return true;
+}
+
+// README 12.4 check 2: symbols laid out for real screens (columns chosen to
+// fit), decoded by tools/check_codes.py.
+(:test)
+function pdf417DumpForDecoding(logger as Test.Logger) as Boolean {
+    var payloads = ["Boarding pass FAKE 0042 seat 12A", "Zürich ✓ Ünïcödé fake", "12345678901234567890123456789",
+        "https://example.com/member/fake?id=0042&level=gold", "a"];
+    var screens = [[218, 218, true], [390, 390, true], [320, 360, false]];
+    for (var i = 0; i < payloads.size(); i++) {
+        var s = screens[i % screens.size()] as Array;
+        var job = new Pdf417.Pdf417Job(payloads[i] as String, 1, s[0] as Number, s[1] as Number, s[2] as Boolean);
+        Jobs.runToCompletion(job, 1);
+        var m = job.matrix();
+        if (job.error != null || m == null) {
+            logger.error("'" + payloads[i] + "': " + job.error);
+            return false;
+        }
+        MatrixFixtures.dump(logger, Codes.PDF417, payloads[i] as String, m);
+    }
+    return true;
+}
+
+(:test)
+function pdf417Limits(logger as Test.Logger) as Boolean {
+    if (!(Pdf417.encode("", 3, 2) instanceof Codes.CodeError)) {
+        logger.error("empty text accepted");
+        return false;
+    }
+    // Two codewords in 30 columns is a single row: PDF417 needs 3.
+    if (!(Pdf417.encode("ab", 30, 0) instanceof Codes.CodeError)) {
+        logger.error("a one-row symbol was accepted");
+        return false;
+    }
+    return Pdf417.autoLevel(40) == 2 && Pdf417.autoLevel(41) == 3 && Pdf417.autoLevel(320) == 4 && Pdf417.autoLevel(321) == 5;
+}