test [nfc]: Move fake-image-request code to its own file

Author: chrisbobbe

test/test_images.dart

@@ -0,0 +1,68 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:flutter_test/flutter_test.dart';
+
+class FakeImageHttpClient extends Fake implements HttpClient {
+  final FakeImageHttpClientRequest request = FakeImageHttpClientRequest();
+
+  @override
+  Future<HttpClientRequest> getUrl(Uri url) async => request;
+}
+
+class FakeImageHttpClientRequest extends Fake implements HttpClientRequest {
+  final FakeImageHttpClientResponse response = FakeImageHttpClientResponse();
+
+  @override
+  final FakeImageHttpHeaders headers = FakeImageHttpHeaders();
+
+  @override
+  Future<HttpClientResponse> close() async => response;
+}
+
+class FakeImageHttpHeaders extends Fake implements HttpHeaders {
+  final Map<String, List<String>> values = {};
+
+  @override
+  void add(String name, Object value, {bool preserveHeaderCase = false}) {
+    (values[name] ??= []).add(value.toString());
+  }
+}
+
+class FakeImageHttpClientResponse extends Fake implements HttpClientResponse {
+  @override
+  int statusCode = HttpStatus.ok;
+
+  late List<int> content;
+
+  @override
+  int get contentLength => content.length;
+
+  @override
+  HttpClientResponseCompressionState get compressionState => HttpClientResponseCompressionState.notCompressed;
+
+  @override
+  StreamSubscription<List<int>> listen(void Function(List<int> event)? onData, {Function? onError, void Function()? onDone, bool? cancelOnError}) {
+    return Stream.value(content).listen(
+      onData, onDone: onDone, onError: onError, cancelOnError: cancelOnError);
+  }
+}
+
+/// A 100x100 PNG image of solid Zulip blue, [kZulipBrandColor].
+// Made from the following SVG:
+//   <svg xmlns="http://www.w3.org/2000/svg" width="1" height="1" viewBox="0 0 1 1">
+//     <rect style="fill:#6492fe;fill-opacity:1" width="1" height="1" x="0" y="0" />
+//   </svg>
+// with `inkscape tmp.svg -w 100 --export-png=tmp1.png`,
+// `zopflipng tmp1.png tmp.png`,
+// and `xxd -i tmp.png`.
+const List<int> kSolidBlueAvatar = [
+  0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d,
+  0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00, 0x00, 0x64,
+  0x01, 0x03, 0x00, 0x00, 0x00, 0x4a, 0x2c, 0x07, 0x17, 0x00, 0x00, 0x00,
+  0x03, 0x50, 0x4c, 0x54, 0x45, 0x64, 0x92, 0xfe, 0xf1, 0xd6, 0x69, 0xa5,
+  0x00, 0x00, 0x00, 0x13, 0x49, 0x44, 0x41, 0x54, 0x78, 0x01, 0x63, 0xa0,
+  0x2b, 0x18, 0x05, 0xa3, 0x60, 0x14, 0x8c, 0x82, 0x51, 0x00, 0x00, 0x05,
+  0x78, 0x00, 0x01, 0x1e, 0xcd, 0x28, 0xcd, 0x00, 0x00, 0x00, 0x00, 0x49,
+  0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82,
+];

test/widgets/content_test.dart

@@ -1,4 +1,3 @@
-import 'dart:async';
 import 'dart:io';
 
 import 'package:checks/checks.dart';
@@ -13,6 +12,7 @@ import 'package:zulip/widgets/store.dart';
 
 import '../example_data.dart' as eg;
 import '../model/binding.dart';
+import '../test_images.dart';
 import 'dialog_checks.dart';
 
 void main() {
@@ -126,7 +126,7 @@ void main() {
       addTearDown(TestZulipBinding.instance.reset);
       await globalStore.add(eg.selfAccount, eg.initialSnapshot());
 
-      final httpClient = _FakeHttpClient();
+      final httpClient = FakeImageHttpClient();
       debugNetworkImageHttpClientProvider = () => httpClient;
       httpClient.request.response
         ..statusCode = HttpStatus.ok
@@ -162,67 +162,3 @@ void main() {
     });
   });
 }
-
-class _FakeHttpClient extends Fake implements HttpClient {
-  final _FakeHttpClientRequest request = _FakeHttpClientRequest();
-
-  @override
-  Future<HttpClientRequest> getUrl(Uri url) async => request;
-}
-
-class _FakeHttpClientRequest extends Fake implements HttpClientRequest {
-  final _FakeHttpClientResponse response = _FakeHttpClientResponse();
-
-  @override
-  final _FakeHttpHeaders headers = _FakeHttpHeaders();
-
-  @override
-  Future<HttpClientResponse> close() async => response;
-}
-
-class _FakeHttpHeaders extends Fake implements HttpHeaders {
-  final Map<String, List<String>> values = {};
-
-  @override
-  void add(String name, Object value, {bool preserveHeaderCase = false}) {
-    (values[name] ??= []).add(value.toString());
-  }
-}
-
-class _FakeHttpClientResponse extends Fake implements HttpClientResponse {
-  @override
-  int statusCode = HttpStatus.ok;
-
-  late List<int> content;
-
-  @override
-  int get contentLength => content.length;
-
-  @override
-  HttpClientResponseCompressionState get compressionState => HttpClientResponseCompressionState.notCompressed;
-
-  @override
-  StreamSubscription<List<int>> listen(void Function(List<int> event)? onData, {Function? onError, void Function()? onDone, bool? cancelOnError}) {
-    return Stream.value(content).listen(
-      onData, onDone: onDone, onError: onError, cancelOnError: cancelOnError);
-  }
-}
-
-/// A 100x100 PNG image of solid Zulip blue, [kZulipBrandColor].
-// Made from the following SVG:
-//   <svg xmlns="http://www.w3.org/2000/svg" width="1" height="1" viewBox="0 0 1 1">
-//     <rect style="fill:#6492fe;fill-opacity:1" width="1" height="1" x="0" y="0" />
-//   </svg>
-// with `inkscape tmp.svg -w 100 --export-png=tmp1.png`,
-// `zopflipng tmp1.png tmp.png`,
-// and `xxd -i tmp.png`.
-const List<int> kSolidBlueAvatar = [
-  0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d,
-  0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00, 0x00, 0x64,
-  0x01, 0x03, 0x00, 0x00, 0x00, 0x4a, 0x2c, 0x07, 0x17, 0x00, 0x00, 0x00,
-  0x03, 0x50, 0x4c, 0x54, 0x45, 0x64, 0x92, 0xfe, 0xf1, 0xd6, 0x69, 0xa5,
-  0x00, 0x00, 0x00, 0x13, 0x49, 0x44, 0x41, 0x54, 0x78, 0x01, 0x63, 0xa0,
-  0x2b, 0x18, 0x05, 0xa3, 0x60, 0x14, 0x8c, 0x82, 0x51, 0x00, 0x00, 0x05,
-  0x78, 0x00, 0x01, 0x1e, 0xcd, 0x28, 0xcd, 0x00, 0x00, 0x00, 0x00, 0x49,
-  0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82,
-];