| package typeutil_test |
| |
| import ( |
| "fmt" |
| "go/ast" |
| "go/parser" |
| "go/token" |
| "testing" |
| |
| "llvm.org/llgo/third_party/gotools/go/types" |
| "llvm.org/llgo/third_party/gotools/go/types/typeutil" |
| ) |
| |
| func TestDependencies(t *testing.T) { |
| packages := make(map[string]*types.Package) |
| conf := types.Config{ |
| Packages: packages, |
| Import: func(_ map[string]*types.Package, path string) (*types.Package, error) { |
| return packages[path], nil |
| }, |
| } |
| fset := token.NewFileSet() |
| |
| // All edges go to the right. |
| // /--D--B--A |
| // F \_C_/ |
| // \__E_/ |
| for i, content := range []string{ |
| `package A`, |
| `package C; import (_ "A")`, |
| `package B; import (_ "A")`, |
| `package E; import (_ "C")`, |
| `package D; import (_ "B"; _ "C")`, |
| `package F; import (_ "D"; _ "E")`, |
| } { |
| f, err := parser.ParseFile(fset, fmt.Sprintf("%d.go", i), content, 0) |
| if err != nil { |
| t.Fatal(err) |
| } |
| pkg, err := conf.Check(f.Name.Name, fset, []*ast.File{f}, nil) |
| if err != nil { |
| t.Fatal(err) |
| } |
| packages[pkg.Path()] = pkg |
| } |
| |
| for _, test := range []struct { |
| roots, want string |
| }{ |
| {"A", "A"}, |
| {"B", "AB"}, |
| {"C", "AC"}, |
| {"D", "ABCD"}, |
| {"E", "ACE"}, |
| {"F", "ABCDEF"}, |
| |
| {"BE", "ABCE"}, |
| {"EB", "ACEB"}, |
| {"DE", "ABCDE"}, |
| {"ED", "ACEBD"}, |
| {"EF", "ACEBDF"}, |
| } { |
| var pkgs []*types.Package |
| for _, r := range test.roots { |
| pkgs = append(pkgs, conf.Packages[string(r)]) |
| } |
| var got string |
| for _, p := range typeutil.Dependencies(pkgs...) { |
| got += p.Path() |
| } |
| if got != test.want { |
| t.Errorf("Dependencies(%q) = %q, want %q", test.roots, got, test.want) |
| } |
| } |
| } |