Remove support for Internet Explorer (#2114)

Closes #1614

Use should be replaced by the edge browser.

It has been 2 years since we removed support for internet explorer in
dart2js. We have not been testing internet explorer integration, and it
may already be broken by dart2js changes.

Remove every reference to `ie` or internet explorer in the repo.

Treat this as non-breaking for `package:test` even though there is a
small risk of breaking some users still using internet explorer and it
happens to still be working.

Author: natebosch

pkgs/test/CHANGELOG.md

@@ -12,6 +12,7 @@
     feature, which is why we are making this change in a non-breaking release.
   * If you do require this feature, file an issue and we can look at adding it
     back.
+* **BREAKING**: Fully remove support for Internet Explorer.
 * Fix running of tests defined under `lib/` with relative imports to other
   libraries in the package.
 

pkgs/test/README.md

@@ -348,7 +348,7 @@ only supports boolean operations. The following identifiers are defined:
 
 * `safari`: Whether the test is running on Apple Safari.
 
-* `ie`: Whether the test is running on Microsoft Internet Explorer.
+* `edge`: Whether the test is running on Microsoft Edge browser.
 
 * `node`: Whether the test is running on Node.js.
 

pkgs/test/dart_test.yaml

@@ -39,10 +39,6 @@ tags:
     add_tags: [dart2js]
     test_on: mac-os
 
-  ie:
-    add_tags: [dart2js]
-    test_on: windows
-    skip: https://github.com/dart-lang/test/issues/1614
   edge:
     add_tags: [dart2js]
     test_on: windows

pkgs/test/doc/configuration.md

@@ -185,8 +185,8 @@ tested on supported platforms.
 
 ```yaml
 tags:
-  # Internet Explorer doesn't support promises yet.
-  promises: {test_on: "browser && !ie"}
+  # Test on browsers other than firefox
+  some_feature: {test_on: "browser && !firefox"}
 ```
 
 The field can also be used at the top level of the configuration file to
@@ -351,11 +351,10 @@ to quickly select a given set of tests.
 
 ```yaml
 presets:
-  # Pass "-P ie" to run only Internet Explorer tests.
-  ie:
+  # Pass "-P feature" to run only tests with "feature name" in the name.
+  feature:
     plain_names:
-    - "IE"
-    - "Internet Explorer"
+    - "feature name"
 ```
 
 This field is not supported in the
@@ -611,7 +610,7 @@ tags:
   chrome: {add_tags: [browser]}
   firefox: {add_tags: [browser]}
   safari: {add_tags: [browser]}
-  ie: {add_tags: [browser]}
+  edge: {add_tags: [browser]}
 ```
 
 This field is not supported in the

pkgs/test/lib/src/executable.dart

@@ -17,7 +17,6 @@ Future<void> main(List<String> args) async {
     Runtime.edge,
     Runtime.firefox,
     Runtime.safari,
-    Runtime.internetExplorer
   ], BrowserPlatform.start);
 
   await executable.main(args);

pkgs/test/lib/src/runner/browser/browser_manager.dart

@@ -23,7 +23,6 @@ import '../executable_settings.dart';
 import 'browser.dart';
 import 'chrome.dart';
 import 'firefox.dart';
-import 'internet_explorer.dart';
 import 'microsoft_edge.dart';
 import 'safari.dart';
 
@@ -158,7 +157,6 @@ class BrowserManager {
         Runtime.chrome => Chrome(url, configuration, settings: settings),
         Runtime.firefox => Firefox(url, settings: settings),
         Runtime.safari => Safari(url, settings: settings),
-        Runtime.internetExplorer => InternetExplorer(url, settings: settings),
         Runtime.edge => MicrosoftEdge(url, configuration, settings: settings),
         _ => throw ArgumentError('$browser is not a browser.'),
       };

pkgs/test/lib/src/runner/browser/default_settings.dart

@@ -27,8 +27,6 @@ final defaultSettings = UnmodifiableMapView({
       macOSExecutable: '/Applications/Firefox.app/Contents/MacOS/firefox-bin',
       windowsExecutable: r'Mozilla Firefox\firefox.exe',
       environmentOverride: 'FIREFOX_EXECUTABLE'),
-  Runtime.internetExplorer:
-      ExecutableSettings(windowsExecutable: r'Internet Explorer\iexplore.exe'),
   Runtime.safari: ExecutableSettings(
       macOSExecutable: '/Applications/Safari.app/Contents/MacOS/Safari',
       environmentOverride: 'SAFARI_EXECUTABLE'),

pkgs/test/lib/src/runner/browser/internet_explorer.dart

@@ -22,8 +22,7 @@ void main() {
   for (var runtime in Runtime.builtIn) {
     for (var compiler in runtime.supportedCompilers) {
       // Ignore the platforms we can't run on this OS.
-      if (((runtime == Runtime.internetExplorer || runtime == Runtime.edge) &&
-              !Platform.isWindows) ||
+      if ((runtime == Runtime.edge && !Platform.isWindows) ||
           (runtime == Runtime.safari && !Platform.isMacOS)) {
         continue;
       }
@@ -116,8 +115,7 @@ void main() {
       },
           skip: compiler == Compiler.dart2wasm
               ? 'Wasm tests are experimental and require special setup'
-              : [Runtime.firefox, Runtime.nodeJS, Runtime.internetExplorer]
-                          .contains(runtime) &&
+              : [Runtime.firefox, Runtime.nodeJS].contains(runtime) &&
                       Platform.isWindows
                   ? 'https://github.com/dart-lang/test/issues/1942'
                   : null);