},
}

func TestReadFailures(t *testing.T) {
	// Errors should be reported (true arg to readImports).
	testRead(t, readFailuresTests, func(r io.Reader) ([]byte, error) { return ReadImports(r, true, nil) })
}

func TestReadFailuresIgnored(t *testing.T) {
	// Syntax errors should not be reported (false arg to readImports).
	// Instead, entire file should be the output and no error.
	// Convert tests not to return syntax errors.

		// Didn't reach EOF, so must have found a non-space byte. Remove it.
		r.buf = r.buf[:len(r.buf)-1]
	}
	return r.buf, r.err
}

// ReadImports is like io.ReadAll, except that it expects a Go file as input
// and stops reading the input once the imports have completed.
func ReadImports(f io.Reader, reportSyntaxError bool, imports *[]string) ([]byte, error) {
	r := newImportReader(bufio.NewReader(f))

	r.readKeyword("package")

	if r.err == nil && !r.eof {
		// Didn't reach EOF, so must have found a non-space byte. Remove it.
		r.buf = r.buf[:len(r.buf)-1]
	}
	return r.buf, r.err
}

// readimports returns the imports found in the named file.
func readimports(file string) []string {
	var imports []string
	r := &importReader{b: bufio.NewReader(strings.NewReader(readfile(file)))}
	r.readKeyword("package")
	r.readIdent()

	testImports := make(map[string]bool)
	numFiles := 0
Files:
	for _, name := range files {
		r, err := fsys.Open(name)
		if err != nil {
			return nil, nil, err
		}
		var list []string
		data, err := ReadImports(r, false, &list)
		r.Close()
		if err != nil {
			return nil, nil, fmt.Errorf("reading %s: %v", name, err)
		}

		// import "C" is implicit requirement of cgo tag.

		"syntax error",
	},
	{
		`package p; import ("x"`,
		"syntax error",
	},
}

func TestReadFailuresIgnored(t *testing.T) {
	// Syntax errors should not be reported (false arg to readImports).
	// Instead, entire file should be the output and no error.
	// Convert tests not to return syntax errors.
	tests := make([]readTest, len(readFailuresTests))
	copy(tests, readFailuresTests)
	for i := range tests {

		}
	}
	if strings.HasSuffix(info.Name(), ".go") {
		f, err := fsys.Open(filepath.Join(dir, info.Name()))
		if err != nil {
			base.Fatal(err)
		}
		defer f.Close()

		content, err := imports.ReadImports(f, false, nil)
		if err == nil && !imports.ShouldBuild(content, imports.AnyTags()) {
			// The file is explicitly tagged "ignore", so it can't affect the build.
			// Leave it out.
			return false
		}

		// the generated files.
	}

	// Resolve imported packages to actual package paths.
	// Make sure they're installed.
	importMap := make(map[string]string)
	for _, p := range gofiles {
		for _, imp := range readimports(p) {
			if imp == "C" {
				fatalf("%s imports C", p)
			}
			importMap[imp] = resolveVendor(imp, dir)
		}
	}
	sortedImports := make([]string, 0, len(importMap))
	for imp := range importMap {