Make the matchesGoldenFile docs link to an explanation of how to create golden image files (#31093)

ae574981 · James D. Lin · Michael Goderbauer · bf8262d8 · ae574981
Commit ae574981 authored Apr 29, 2019 by James D. Lin Committed by Michael Goderbauer Apr 29, 2019
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matchers.dart packages/flutter_test/lib/src/matchers.dart +3 -0

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--- a/packages/flutter_test/lib/src/matchers.dart
+++ b/packages/flutter_test/lib/src/matchers.dart
@@ -297,6 +297,9 @@ Matcher coversSameAreaAs(Path expectedPath, { @required Rect areaToCompare, int
 /// await expectLater(imageFuture, matchesGoldenFile('save.png'));
 /// ```
 ///
+/// Golden image files can be created or updated by running `flutter test
+/// --update-goldens` on the test.
+///
 /// See also:
 ///
 ///  * [goldenFileComparator], which acts as the backend for this matcher.