func TestPrinter_PrintsMinimalAST(t *testing.T) {
astDoc := ast.NewField(&ast.Field{
Name: ast.NewName(&ast.Name{
Value: "foo",
}),
})
results := printer.Print(astDoc)
expected := "foo"
if !reflect.DeepEqual(results, expected) {
t.Fatalf("Unexpected result, Diff: %v", testutil.Diff(expected, results))
}
}
func parseField(parser *Parser) (*ast.Field, error) {
start := parser.Token.Start
nameOrAlias, err := parseName(parser)
if err != nil {
return nil, err
}
var (
name *ast.Name
alias *ast.Name
)
if skip(parser, lexer.TokenKind[lexer.COLON]) {
alias = nameOrAlias
n, err := parseName(parser)
if err != nil {
return nil, err
}
name = n
} else {
name = nameOrAlias
}
arguments, err := parseArguments(parser)
if err != nil {
return nil, err
}
directives, err := parseDirectives(parser)
if err != nil {
return nil, err
}
var selectionSet *ast.SelectionSet
if peek(parser, lexer.TokenKind[lexer.BRACE_L]) {
sSet, err := parseSelectionSet(parser)
if err != nil {
return nil, err
}
selectionSet = sSet
}
return ast.NewField(&ast.Field{
Alias: alias,
Name: name,
Arguments: arguments,
Directives: directives,
SelectionSet: selectionSet,
Loc: loc(parser, start),
}), nil
}