renaming to Thermion

examples/flutter/example/test_driver/compare_goldens.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+device=$1
+if [ -z "$device" ]; then
+    echo "Usage: $0 <device_id>"
+    exit 1;
+fi
+
+rm -f integration_test/goldens/{ios,macos,windows,android}/diffs/*.png
+flutter drive --driver=test_driver/integration_test.dart  -d $1 --target=integration_test/plugin_integration_test.dart       

examples/flutter/example/test_driver/integration_test.dart

@@ -0,0 +1,58 @@
+import 'dart:io';
+
+import 'package:integration_test/integration_test_driver_extended.dart';
+import 'package:image_compare/image_compare.dart';
+
+Future<void> main() async {
+  await integrationDriver(
+    onScreenshot: (
+      String screenshotName,
+      List<int> screenshotBytes, [
+      Map<String, Object?>? args,
+    ]) async {
+      final dir = screenshotName.split("/")[0];
+      final name = screenshotName.split("/")[1];
+      final File golden = await File('integration_test/goldens/$dir/$name.png');
+
+      if (!golden.existsSync()) {
+        throw Exception(
+            "Golden image ${golden.path} doesn't exist yet. Make sure you have run integraton_test_update_goldens.dart first");
+      }
+
+      var result = await compareImages(
+          src1: screenshotBytes,
+          src2: golden.readAsBytesSync(),
+          algorithm: ChiSquareDistanceHistogram());
+
+      print(result);
+
+      // TODO - it would be preferable to use Flutter's GoldenFileComparator here, e.g.
+      //
+      // ```var comparator = LocalFileComparator(testImage.uri);
+      // comparator.compare(imageBytes, golden)
+      // comparator.getFailureFile(failure, golden, basedir)
+      // var result = await comparator.compare(
+      //     Uint8List.fromList(screenshotBytes), golden.uri);
+      // if (!result.passed) {
+      //   for (var key in result.diffs!.keys) {
+      //     var byteData = await result.diffs![key]!.toByteData();
+      //     File('integration_test/goldens/$dir/diffs/$name.png')
+      //         .writeAsBytesSync(
+      //             byteData!.buffer.asUint8List(byteData!.offsetInBytes));
+      //   }
+      //   return false;
+      // }```
+      // but this is only available via a Flutter shell which is currently unavailable (this script is run as a plain Dart file I guess).
+      // let's revisit if/when this changes
+      // see https://github.com/flutter/flutter/issues/51890 and https://github.com/flutter/flutter/issues/103222
+
+      if (result > 0.005) {
+        File('integration_test/goldens/$dir/diffs/$name.png')
+            .writeAsBytesSync(screenshotBytes);
+        return false;
+      }
+
+      return true;
+    },
+  );
+}

examples/flutter/example/test_driver/integration_test_update_goldens.dart

@@ -0,0 +1,22 @@
+import 'dart:io';
+import 'package:crypto/crypto.dart';
+import 'package:integration_test/integration_test_driver_extended.dart';
+
+Future<void> main() async {
+  await integrationDriver(
+    onScreenshot: (
+      String screenshotName,
+      List<int> screenshotBytes, [
+      Map<String, Object?>? args,
+    ]) async {
+      final dir = screenshotName.split("/")[0];
+      final name = screenshotName.split("/")[1];
+      final File image = await File('integration_test/goldens/$dir/$name.png')
+          .create(recursive: true);
+
+      image.writeAsBytesSync(screenshotBytes);
+
+      return true;
+    },
+  );
+}

examples/flutter/example/test_driver/regenerate_goldens.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+device=$1
+if [ -z "$device" ]; then
+    echo "Usage: $0 <device_id>"
+    exit 1;
+fi
+rm -f integration_test/goldens/{ios,macos,windows,android}/*.png
+flutter drive --driver=test_driver/integration_test_update_goldens.dart  -d $1 --target=integration_test/plugin_integration_test.dart