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lua_test.go
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lua_test.go
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package binder
import (
"errors"
"testing"
"github.com/yuin/gopher-lua"
)
func TestLua_Func(t *testing.T) {
b := New(Options{
SkipOpenLibs: true,
})
b.Func("negate", func(c *Context) error {
t := c.Top()
if t != 1 {
return errors.New("need an argument")
}
c.Push().Bool(!c.Arg(1).Bool())
return nil
})
l := NewLoader()
l.Func("sum", func(c *Context) error {
t := c.Top()
if t < 2 {
return errors.New("need at least 2 arguments")
}
var sum float64
for i := 1; i <= t; i++ {
sum += c.Arg(i).Number()
}
c.Push().Number(sum)
return nil
})
l.Func("gettype", func(c *Context) error {
t := c.Top()
if t != 1 {
return errors.New("need an argument")
}
switch c.Arg(1).Any().(type) {
case lua.LNumber:
c.Push().String("number")
case lua.LString:
c.Push().String("string")
case lua.LBool:
c.Push().String("bool")
default:
c.Push().Bool(false)
}
return nil
})
l.Func("raiser", func(c *Context) error {
return errors.New("For honnor!")
})
b.Load(l)
if err := b.DoString(`
assert(negate(true) == false, 'wrong negation')
assert(negate(false) == true, 'wrong negation')
assert(gettype(123) == 'number', '123 is not number')
assert(gettype("string") == 'string', '"string" is not string')
assert(gettype(true) == 'bool', 'true is not bool')
assert(sum(1, 2) == 3, '1 + 2 != 3')
assert(sum(5, 7) == 12, '5 + 7 != 12')
assert(sum(100, 200) == 300, '100 + 200 != 300')
`); err != nil {
t.Error("Error execute function", err)
}
if err := b.DoString("raiser()"); err == nil {
t.Error("Must return error", err)
}
}
func TestLua_Module(t *testing.T) {
b := New()
m := b.Module("reverse")
m.String("_STRING", "foobar")
m.Number("_NUMBER", 123)
m.Bool("_BOOL", true)
m.Func("string", func(c *Context) error {
if c.Top() == 0 {
return errors.New("need arguments")
}
s := c.Arg(1).String()
runes := []rune(s)
for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
runes[i], runes[j] = runes[j], runes[i]
}
c.Push().String(string(runes))
return nil
})
if err := b.DoFile("lua_test.lua"); err != nil {
t.Error("Error execute module", err)
}
}
type Person struct {
Name string
}
func TestLua_Table(t *testing.T) {
b := New()
tbl := b.Table("person")
tbl.Static("new", func(c *Context) error {
if c.Top() == 0 {
return errors.New("need arguments")
}
n := c.Arg(1).String()
c.Push().Data(&Person{n}, "person")
return nil
})
tbl.Dynamic("name", func(c *Context) error {
p, ok := c.Arg(1).Data().(*Person)
if !ok {
return errors.New("person expected")
}
if c.Top() == 1 {
c.Push().String(p.Name)
} else {
p.Name = c.Arg(2).String()
}
return nil
})
if err := b.DoString(`
local p = person.new('Steeve')
assert(p:name() == 'Steeve', 'Steve is not Steve')
p:name('Alice')
assert(p:name() == 'Alice', 'Alice is not Alice')
`); err != nil {
t.Error("Error execute module", err)
}
}