camoroso
8e596d5979
1. moved scan/symbol.go to new package sym and adapted all files that reference Symbol type and its values. 2. new type interval defined by begin, end and step values. 3. replaced operator-range.go with operator-interval.go. 4. replaced range operator begin:end with begin..end..step. 5. new implementation of sub-collection extraction based on new interval literal.
57 lines
1.6 KiB
Go
57 lines
1.6 KiB
Go
// Copyright (c) 2024-2026 Celestino Amoroso (celestino.amoroso@gmail.com).
|
|
// All rights reserved.
|
|
|
|
// t_ast_test.go
|
|
package expr
|
|
|
|
import (
|
|
"errors"
|
|
"testing"
|
|
|
|
"git.portale-stac.it/go-pkg/expr/scan"
|
|
"git.portale-stac.it/go-pkg/expr/sym"
|
|
)
|
|
|
|
func TestAstString(t *testing.T) {
|
|
tree := scan.NewAst()
|
|
if gotResult := tree.String(); gotResult != "(nil)" {
|
|
t.Errorf(`result: got %q, want "(nil)"`, gotResult)
|
|
}
|
|
}
|
|
|
|
func TestAddTokensGood(t *testing.T) {
|
|
tk1 := scan.NewValueToken(0, 0, sym.SymInteger, "100", 100)
|
|
tk2 := scan.NewToken(0, 0, sym.SymPlus, "+")
|
|
tk3 := scan.NewValueToken(0, 0, sym.SymInteger, "50", 500)
|
|
|
|
tree := scan.NewAst()
|
|
if gotErr := tree.AddTokens(tk1, tk2, tk3); gotErr != nil {
|
|
t.Errorf("err: got <%v>, want <nil>", gotErr)
|
|
}
|
|
}
|
|
|
|
func TestAddTokensBad(t *testing.T) {
|
|
tk0 := scan.NewValueToken(0, 0, sym.SymInteger, "200", 200)
|
|
tk1 := scan.NewValueToken(0, 0, sym.SymInteger, "100", 100)
|
|
tk2 := scan.NewToken(0, 0, sym.SymPlus, "+")
|
|
tk3 := scan.NewValueToken(0, 0, sym.SymInteger, "50", 500)
|
|
|
|
wantErr := errors.New(`[0:0] two adjacent operators: "200" and "100"`)
|
|
|
|
tree := scan.NewAst()
|
|
if gotErr := tree.AddTokens(tk0, tk1, tk2, tk3); gotErr != nil && gotErr.Error() != wantErr.Error() {
|
|
t.Errorf("err: got <%v>, want <nil>", gotErr)
|
|
}
|
|
}
|
|
|
|
func TestAddUnknownTokens(t *testing.T) {
|
|
tk0 := scan.NewToken(0, 0, sym.SymPercent, "%")
|
|
|
|
wantErr := errors.New(`unexpected token "%"`)
|
|
|
|
tree := scan.NewAst()
|
|
if _, gotErr := tree.AddToken(tk0); gotErr != nil && gotErr.Error() != wantErr.Error() {
|
|
t.Errorf("err: got <%v>, want <%v>", gotErr, wantErr)
|
|
}
|
|
}
|