Revert "Revert "Use native async/await support in pub.""

sdk/lib/_internal/pub_generated/test/dependency_computer/conservative_dependencies_test.dart

Index: sdk/lib/_internal/pub_generated/test/dependency_computer/conservative_dependencies_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/dependency_computer/conservative_dependencies_test.dart b/sdk/lib/_internal/pub_generated/test/dependency_computer/conservative_dependencies_test.dart
deleted file mode 100644
index 2e8cca00c0a9cab297fcb96eb4b83bb18c10a8b9..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub_generated/test/dependency_computer/conservative_dependencies_test.dart
+++ /dev/null
@@ -1,522 +0,0 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library pub_tests;
-
-import 'package:scheduled_test/scheduled_test.dart';
-
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-import 'utils.dart';
-
-void main() {
-  initConfig();
-
-  integration(
-      "reports previous transformers as dependencies if the "
-          "transformer is transformed",
-      () {
-    // The root app just exists so that something is transformed by pkg and qux.
-    d.dir(appPath, [d.pubspec({
-        "name": "myapp",
-        "version": "1.0.0",
-        "dependencies": {
-          "pkg": {
-            "path": "../pkg"
-          },
-          "qux": {
-            "path": "../qux"
-          }
-        },
-        "transformers": ["pkg", "qux"]
-      })]).create();
-
-    d.dir("pkg", [d.pubspec({
-        "name": "pkg",
-        "version": "1.0.0",
-        "dependencies": {
-          "foo": {
-            "path": "../foo"
-          },
-          "bar": {
-            "path": "../bar"
-          },
-          "baz": {
-            "path": "../baz"
-          },
-        },
-        "transformers": [{
-            "foo": {
-              "\$include": "lib/pkg.dart"
-            }
-          }, {
-            "bar": {
-              "\$exclude": "lib/transformer.dart"
-            }
-          }, "baz"]
-      }),
-          d.dir(
-              "lib",
-              [d.file("pkg.dart", ""), d.file("transformer.dart", transformer())])]).create();
-
-    // Even though foo and bar don't modify pkg/lib/transformer.dart themselves,
-    // it may be modified to import a library that they modify or generate, so
-    // pkg will depend on them.
-    d.dir(
-        "foo",
-        [
-            d.libPubspec("foo", "1.0.0"),
-            d.dir("lib", [d.file("foo.dart", transformer())])]).create();
-
-    d.dir(
-        "bar",
-        [
-            d.libPubspec("bar", "1.0.0"),
-            d.dir("lib", [d.file("bar.dart", transformer())])]).create();
-
-    // baz transforms pkg/lib/transformer.dart, so pkg will obviously
-    // depend on it.
-    d.dir(
-        "baz",
-        [
-            d.libPubspec("baz", "1.0.0"),
-            d.dir("lib", [d.file("baz.dart", transformer())])]).create();
-
-    // qux doesn't transform anything in pkg, so pkg won't depend on it.
-    d.dir(
-        "qux",
-        [
-            d.libPubspec("qux", "1.0.0"),
-            d.dir("lib", [d.file("qux.dart", transformer())])]).create();
-
-    expectDependencies({
-      'pkg': ['foo', 'bar', 'baz'],
-      'foo': [],
-      'bar': [],
-      'baz': [],
-      'qux': []
-    });
-  });
-
-  integration(
-      "reports all transitive package dependencies' transformers as "
-          "dependencies if the transformer is transformed",
-      () {
-    // The root app just exists so that something is transformed by pkg and qux.
-    d.dir(appPath, [d.pubspec({
-        "name": "myapp",
-        "dependencies": {
-          "pkg": {
-            "path": "../pkg"
-          },
-          "qux": {
-            "path": "../qux"
-          }
-        },
-        "transformers": ["pkg"]
-      })]).create();
-
-    d.dir("pkg", [d.pubspec({
-        "name": "pkg",
-        "version": "1.0.0",
-        "dependencies": {
-          "foo": {
-            "path": "../foo"
-          },
-          "baz": {
-            "path": "../baz"
-          }
-        },
-        "transformers": ["baz"]
-      }), d.dir("lib", [d.file("pkg.dart", transformer())])]).create();
-
-    // pkg depends on foo. Even though it's not transformed by foo, its
-    // transformed transformer could import foo, so it has to depend on foo.
-    d.dir("foo", [d.pubspec({
-        "name": "foo",
-        "version": "1.0.0",
-        "dependencies": {
-          "bar": {
-            "path": "../bar"
-          }
-        },
-        "transformers": ["foo"]
-      }), d.dir("lib", [d.file("foo.dart", transformer())])]).create();
-
-    // foo depends on bar, and like pkg's dependency on foo, the transformed
-    // version of foo's transformer could import bar, so foo has to depend on
-    // bar.
-    d.dir("bar", [d.pubspec({
-        "name": "bar",
-        "version": "1.0.0",
-        "transformers": ["bar"]
-      }), d.dir("lib", [d.file("bar.dart", transformer())])]).create();
-
-    /// foo is transformed by baz.
-    d.dir(
-        "baz",
-        [
-            d.libPubspec("baz", "1.0.0"),
-            d.dir("lib", [d.file("baz.dart", transformer())])]).create();
-
-    /// qux is not part of pkg's transitive dependency tree, so pkg shouldn't
-    /// depend on it.
-    d.dir("qux", [d.pubspec({
-        "name": "qux",
-        "version": "1.0.0",
-        "transformers": ["qux"]
-      }), d.dir("lib", [d.file("qux.dart", transformer())])]).create();
-
-    expectDependencies({
-      'pkg': ['foo', 'bar', 'baz'],
-      'foo': [],
-      'bar': [],
-      'baz': [],
-      'qux': []
-    });
-  });
-
-  integration(
-      "reports previous transformers as dependencies if a "
-          "nonexistent local file is imported",
-      () {
-    // The root app just exists so that something is transformed by pkg and bar.
-    d.dir(appPath, [d.pubspec({
-        "name": "myapp",
-        "dependencies": {
-          "pkg": {
-            "path": "../pkg"
-          },
-          "bar": {
-            "path": "../bar"
-          }
-        },
-        "transformers": ["pkg", "bar"]
-      })]).create();
-
-    d.dir("pkg", [d.pubspec({
-        "name": "pkg",
-        "version": "1.0.0",
-        "dependencies": {
-          "foo": {
-            "path": "../foo"
-          },
-          "bar": {
-            "path": "../bar"
-          }
-        },
-        "transformers": [{
-            "foo": {
-              "\$include": "lib/pkg.dart"
-            }
-          }]
-      }),
-          d.dir(
-              "lib",
-              [
-                  d.file("pkg.dart", ""),
-                  d.file("transformer.dart", transformer(["nonexistent.dart"]))])]).create();
-
-    // Since pkg's transformer imports a nonexistent file, we assume that file
-    // was generated by foo's transformer. Thus pkg's transformer depends on
-    // foo's even though the latter doesn't transform the former.
-    d.dir(
-        "foo",
-        [
-            d.libPubspec("foo", "1.0.0"),
-            d.dir("lib", [d.file("foo.dart", transformer())])]).create();
-
-    /// qux is not part of pkg's transitive dependency tree, so pkg shouldn't
-    /// depend on it.
-    d.dir(
-        "bar",
-        [
-            d.libPubspec("bar", "1.0.0"),
-            d.dir("lib", [d.file("bar.dart", transformer())])]).create();
-
-    expectDependencies({
-      'pkg': ['foo'],
-      'foo': [],
-      'bar': []
-    });
-  });
-
-  integration(
-      "reports all that package's dependencies' transformers as "
-          "dependencies if a non-existent file is imported from another package",
-      () {
-    d.dir(appPath, [d.pubspec({
-        "name": "myapp",
-        "dependencies": {
-          "foo": {
-            "path": "../foo"
-          },
-          "qux": {
-            "path": "../qux"
-          }
-        },
-        "transformers": ["myapp"]
-      }),
-          d.dir(
-              "lib",
-              [
-                  d.file(
-                      "myapp.dart",
-                      transformer(["package:foo/nonexistent.dart"]))])]).create();
-
-    // myapp imported a nonexistent file from foo so myapp will depend on every
-    // transformer transitively reachable from foo, since the nonexistent file
-    // could be generated to import anything.
-    d.dir("foo", [d.pubspec({
-        "name": "foo",
-        "version": "1.0.0",
-        "dependencies": {
-          "bar": {
-            "path": "../bar"
-          },
-          "baz": {
-            "path": "../baz"
-          }
-        },
-        "transformers": ["foo"]
-      }), d.dir("lib", [d.file("foo.dart", transformer())])]).create();
-
-    // bar is a dependency of foo so myapp will depend on it.
-    d.dir("bar", [d.pubspec({
-        "name": "bar",
-        "version": "1.0.0",
-        "transformers": ["bar"]
-      }), d.dir("lib", [d.file("bar.dart", transformer())])]).create();
-
-    // baz is a dependency of foo so myapp will depend on it.
-    d.dir("baz", [d.pubspec({
-        "name": "baz",
-        "version": "1.0.0",
-        "transformers": ["baz"]
-      }), d.dir("lib", [d.file("baz.dart", transformer())])]).create();
-
-    // qux is not transitively reachable from foo so myapp won't depend on it.
-    d.dir("qux", [d.pubspec({
-        "name": "qux",
-        "version": "1.0.0",
-        "transformers": ["qux"]
-      }), d.dir("lib", [d.file("qux.dart", transformer())])]).create();
-
-    expectDependencies({
-      'myapp': ['foo', 'bar', 'baz'],
-      'foo': [],
-      'bar': [],
-      'baz': [],
-      'qux': []
-    });
-  });
-
-  integration(
-      "reports all that package's dependencies' transformers as "
-          "dependencies if a non-existent transformer is used from another package",
-      () {
-    d.dir(appPath, [d.pubspec({
-        "name": "myapp",
-        "dependencies": {
-          "foo": {
-            "path": "../foo"
-          },
-          "qux": {
-            "path": "../qux"
-          }
-        },
-        "transformers": ["myapp"]
-      }),
-          d.dir(
-              "lib",
-              [
-                  d.file(
-                      "myapp.dart",
-                      transformer(["package:foo/nonexistent.dart"]))])]).create();
-
-    // myapp imported a nonexistent file from foo so myapp will depend on every
-    // transformer transitively reachable from foo, since the nonexistent file
-    // could be generated to import anything.
-    d.dir("foo", [d.pubspec({
-        "name": "foo",
-        "version": "1.0.0",
-        "dependencies": {
-          "bar": {
-            "path": "../bar"
-          },
-          "baz": {
-            "path": "../baz"
-          }
-        },
-        "transformers": ["bar"]
-      })]).create();
-
-    // bar is a dependency of foo so myapp will depend on it.
-    d.dir(
-        "bar",
-        [
-            d.libPubspec("bar", "1.0.0"),
-            d.dir("lib", [d.file("bar.dart", transformer())])]).create();
-
-    // baz is a dependency of foo so myapp will depend on it.
-    d.dir("baz", [d.pubspec({
-        "name": "baz",
-        "version": "1.0.0",
-        "transformers": ["baz"]
-      }), d.dir("lib", [d.file("baz.dart", transformer())])]).create();
-
-    // qux is not transitively reachable from foo so myapp won't depend on it.
-    d.dir("qux", [d.pubspec({
-        "name": "qux",
-        "version": "1.0.0",
-        "transformers": ["qux"]
-      }), d.dir("lib", [d.file("qux.dart", transformer())])]).create();
-
-    expectDependencies({
-      'myapp': ['bar', 'baz'],
-      'bar': [],
-      'baz': [],
-      'qux': []
-    });
-  });
-
-  test("reports dependencies on transformers in past phases", () {
-    d.dir(appPath, [d.pubspec({
-        "name": "myapp",
-        "transformers": ["myapp/first", "myapp/second", "myapp/third"]
-      }),
-          d.dir(
-              "lib",
-              [
-                  d.file("first.dart", transformer()),
-                  d.file("second.dart", transformer()),
-                  d.file("third.dart", transformer())])]).create();
-
-    expectDependencies({
-      'myapp/first': [],
-      'myapp/second': ['myapp/first'],
-      'myapp/third': ['myapp/second', 'myapp/first']
-    });
-  });
-
-  integration(
-      "considers the entrypoint package's dev and override " "dependencies",
-      () {
-    d.dir(appPath, [d.pubspec({
-        "name": "myapp",
-        "dependencies": {
-          "foo": {
-            "path": "../foo"
-          }
-        },
-        "dev_dependencies": {
-          "bar": {
-            "path": "../bar"
-          }
-        },
-        "dependency_overrides": {
-          "baz": {
-            "path": "../baz"
-          }
-        },
-        "transformers": ["foo", "myapp"]
-      }), d.dir("lib", [d.file("myapp.dart", transformer())])]).create();
-
-    // foo transforms myapp's transformer so it could import from bar or baz.
-    d.dir("foo", [d.pubspec({
-        "name": "foo",
-        "version": "1.0.0",
-        "transformers": ["foo"]
-      }), d.dir("lib", [d.file("foo.dart", transformer())])]).create();
-
-    // bar is a dev dependency that myapp could import from, so myapp should
-    // depend on it.
-    d.dir("bar", [d.pubspec({
-        "name": "bar",
-        "version": "1.0.0",
-        "transformers": ["bar"]
-      }), d.dir("lib", [d.file("bar.dart", transformer())])]).create();
-
-    // baz is an override dependency that myapp could import from, so myapp
-    // should depend on it.
-    d.dir("baz", [d.pubspec({
-        "name": "baz",
-        "version": "1.0.0",
-        "transformers": ["baz"]
-      }), d.dir("lib", [d.file("baz.dart", transformer())])]).create();
-
-    expectDependencies({
-      'myapp': ['foo', 'bar', 'baz'],
-      'foo': [],
-      'bar': [],
-      'baz': []
-    });
-  });
-
-  integration(
-      "doesn't consider a non-entrypoint package's dev and override " "dependencies",
-      () {
-    // myapp just exists so that pkg isn't the entrypoint.
-    d.dir(appPath, [d.pubspec({
-        "name": "myapp",
-        "dependencies": {
-          "pkg": {
-            "path": "../pkg"
-          }
-        }
-      })]).create();
-
-    d.dir("pkg", [d.pubspec({
-        "name": "pkg",
-        "dependencies": {
-          "foo": {
-            "path": "../foo"
-          }
-        },
-        "dev_dependencies": {
-          "bar": {
-            "path": "../bar"
-          }
-        },
-        "dependency_overrides": {
-          "baz": {
-            "path": "../baz"
-          }
-        },
-        "transformers": ["foo", "pkg"]
-      }), d.dir("lib", [d.file("pkg.dart", transformer())])]).create();
-
-    // foo transforms pkg's transformer so it could theoretcially import from
-    // bar or baz. However, since pkg isn't the entrypoint, it doesn't have
-    // access to them.
-    d.dir("foo", [d.pubspec({
-        "name": "foo",
-        "version": "1.0.0",
-        "transformers": ["foo"]
-      }), d.dir("lib", [d.file("foo.dart", transformer())])]).create();
-
-    // bar is a dev dependency that myapp can't import from, so myapp shouldn't
-    // depend on it.
-    d.dir("bar", [d.pubspec({
-        "name": "bar",
-        "version": "1.0.0",
-        "transformers": ["bar"]
-      }), d.dir("lib", [d.file("bar.dart", transformer())])]).create();
-
-    // baz is a dev dependency that myapp can't import from, so myapp shouldn't
-    // depend on it.
-    d.dir("baz", [d.pubspec({
-        "name": "baz",
-        "version": "1.0.0",
-        "transformers": ["baz"]
-      }), d.dir("lib", [d.file("baz.dart", transformer())])]).create();
-
-    expectDependencies({
-      'pkg': ['foo'],
-      'foo': [],
-      'bar': [],
-      'baz': []
-    });
-  });
-}