var dir … var query … var verify … type packageName … type PackageID … type ImportPath … type PackagePath … type Metadata … type MetadataSource … // TestBuildPackageGraph tests the BuildPackageGraph constructor, which uses // the reference analysis of the Refs function to build a graph of // relationships between packages. // // It simulates the operation of gopls at startup: packages are loaded via // go/packages, and their syntax+metadata analyzed to determine which packages // are reachable from others. // // The test then verifies that the 'load' graph (the graph of relationships in // export data) is a subgraph of the 'reach' graph constructed by // BuildPackageGraph. While doing so, it constructs some statistics about the // relative sizes of these graphs, along with the 'transitive imports' graph, // to report the effectiveness of the reachability analysis. // // The following flags affect this test: // - dir sets the dir from which to run go/packages // - query sets the go/packages query to load // - verify toggles the verification w.r.t. the load graph (which may be // prohibitively expensive with large queries). func TestBuildPackageGraph(t *testing.T) { … } func importMap(id PackageID, meta MetadataSource) map[PackagePath]PackageID { … } func importFromExportData(pkgPath, exportFile string) (*types.Package, error) { … } func BenchmarkBuildPackageGraph(b *testing.B) { … } type memoizedParser … type futureParse … func newParser() *memoizedParser { … } func (p *memoizedParser) parse(ctx context.Context, uri protocol.DocumentURI) (*parsego.File, error) { … } type mapMetadataSource … func (s mapMetadataSource) Metadata(id PackageID) *Metadata { … } // This function is a compressed version of snapshot.load from the // internal/cache package, for use in testing. // // TODO(rfindley): it may be valuable to extract this logic from the snapshot, // since it is otherwise standalone. func loadPackages(query string, needExport bool) (map[PackageID]string, MetadataSource, error) { … }
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