Test more pre-release behavior. (#2175)
* Cover common use-cases with caret notation.
* Test that dependency on pre-release from stable release causes usage
of the pre-release.
* Test that direct dependency on stable release will not be overwritten
by pre-release dependency from other stable dependency.
* Test limitations of backtracking for dependency on pre-releases.
diff --git a/test/version_solver_test.dart b/test/version_solver_test.dart
index cfb6b89..aeba669 100644
--- a/test/version_solver_test.dart
+++ b/test/version_solver_test.dart
@@ -1661,6 +1661,84 @@
await d.appDir({'a': '<=2.0.0-dev'}).create();
await expectResolves(result: {'a': '1.1.0'});
});
+
+ test('use pre-release when desired', () async {
+ await servePackages((builder) {
+ builder.serve('a', '1.0.0');
+ builder.serve('a', '1.1.0-dev');
+ });
+
+ await d.appDir({'a': '^1.1.0-dev'}).create();
+ await expectResolves(result: {'a': '1.1.0-dev'});
+ });
+
+ test('can upgrade from pre-release', () async {
+ await servePackages((builder) {
+ builder.serve('a', '1.0.0');
+ builder.serve('a', '1.1.0-dev');
+ builder.serve('a', '1.1.0');
+ });
+
+ await d.appDir({'a': '^1.1.0-dev'}).create();
+ await expectResolves(result: {'a': '1.1.0'});
+ });
+
+ test('will use pre-release if depended on in stable release', () async {
+ // This behavior is desired because a stable package has dependency on a
+ // pre-release.
+ await servePackages((builder) {
+ builder.serve('a', '1.0.0', deps: {'b': '^1.0.0'});
+ builder.serve('a', '1.1.0', deps: {'b': '^1.1.0-dev'});
+ builder.serve('b', '1.0.0');
+ builder.serve('b', '1.1.0-dev');
+ });
+
+ await d.appDir({'a': '^1.0.0'}).create();
+ await expectResolves(result: {
+ 'a': '1.1.0',
+ 'b': '1.1.0-dev',
+ });
+ });
+
+ test('backtracks pre-release choice with direct dependency', () async {
+ await servePackages((builder) {
+ builder.serve('a', '1.0.0', deps: {'b': '^1.0.0'});
+ builder.serve('a', '1.1.0', deps: {'b': '^1.1.0-dev'});
+ builder.serve('b', '1.0.0');
+ builder.serve('b', '1.1.0-dev');
+ });
+
+ await d.appDir({
+ 'a': '^1.0.0',
+ 'b': '^1.0.0', // Direct dependency prevents us from using a pre-release.
+ }).create();
+ await expectResolves(result: {
+ 'a': '1.0.0',
+ 'b': '1.0.0',
+ });
+ });
+
+ test('backtracking pre-release fails with indirect dependency', () async {
+ // NOTE: This behavior is not necessarily desired.
+ // If feasible it might worth changing this behavior in the future.
+ await servePackages((builder) {
+ builder.serve('a', '1.0.0', deps: {'b': '^1.0.0'});
+ builder.serve('a', '1.1.0', deps: {'b': '^1.1.0-dev'});
+ builder.serve('b', '1.0.0');
+ builder.serve('b', '1.1.0-dev');
+ builder.serve('c', '1.0.0', deps: {'b': '^1.0.0'});
+ });
+
+ await d.appDir({
+ 'a': '^1.0.0',
+ 'c': '^1.0.0', // This doesn't not prevent using a pre-release.
+ }).create();
+ await expectResolves(result: {
+ 'a': '1.1.0',
+ 'b': '1.1.0-dev',
+ 'c': '1.0.0',
+ });
+ });
}
void override() {
