103 lines
2.8 KiB
Go
103 lines
2.8 KiB
Go
package runtime_test
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/d5/tengo/objects"
|
|
)
|
|
|
|
func TestIf(t *testing.T) {
|
|
expect(t, `if (true) { out = 10 }`, nil, 10)
|
|
expect(t, `if (false) { out = 10 }`, nil, objects.UndefinedValue)
|
|
expect(t, `if (false) { out = 10 } else { out = 20 }`, nil, 20)
|
|
expect(t, `if (1) { out = 10 }`, nil, 10)
|
|
expect(t, `if (0) { out = 10 } else { out = 20 }`, nil, 20)
|
|
expect(t, `if (1 < 2) { out = 10 }`, nil, 10)
|
|
expect(t, `if (1 > 2) { out = 10 }`, nil, objects.UndefinedValue)
|
|
expect(t, `if (1 < 2) { out = 10 } else { out = 20 }`, nil, 10)
|
|
expect(t, `if (1 > 2) { out = 10 } else { out = 20 }`, nil, 20)
|
|
|
|
expect(t, `if (1 < 2) { out = 10 } else if (1 > 2) { out = 20 } else { out = 30 }`, nil, 10)
|
|
expect(t, `if (1 > 2) { out = 10 } else if (1 < 2) { out = 20 } else { out = 30 }`, nil, 20)
|
|
expect(t, `if (1 > 2) { out = 10 } else if (1 == 2) { out = 20 } else { out = 30 }`, nil, 30)
|
|
expect(t, `if (1 > 2) { out = 10 } else if (1 == 2) { out = 20 } else if (1 < 2) { out = 30 } else { out = 40 }`, nil, 30)
|
|
expect(t, `if (1 > 2) { out = 10 } else if (1 < 2) { out = 20; out = 21; out = 22 } else { out = 30 }`, nil, 22)
|
|
expect(t, `if (1 > 2) { out = 10 } else if (1 == 2) { out = 20 } else { out = 30; out = 31; out = 32}`, nil, 32)
|
|
expect(t, `if (1 > 2) { out = 10 } else if (1 < 2) { if (1 == 2) { out = 21 } else { out = 22 } } else { out = 30 }`, nil, 22)
|
|
expect(t, `if (1 > 2) { out = 10 } else if (1 < 2) { if (1 == 2) { out = 21 } else if (2 == 3) { out = 22 } else { out = 23 } } else { out = 30 }`, nil, 23)
|
|
expect(t, `if (1 > 2) { out = 10 } else if (1 == 2) { if (1 == 2) { out = 21 } else if (2 == 3) { out = 22 } else { out = 23 } } else { out = 30 }`, nil, 30)
|
|
expect(t, `if (1 > 2) { out = 10 } else if (1 == 2) { out = 20 } else { if (1 == 2) { out = 31 } else if (2 == 3) { out = 32 } else { out = 33 } }`, nil, 33)
|
|
|
|
expect(t, `if a:=0; a<1 { out = 10 }`, nil, 10)
|
|
expect(t, `a:=0; if a++; a==1 { out = 10 }`, nil, 10)
|
|
expect(t, `
|
|
func() {
|
|
a := 1
|
|
if a++; a > 1 {
|
|
out = a
|
|
}
|
|
}()
|
|
`, nil, 2)
|
|
expect(t, `
|
|
func() {
|
|
a := 1
|
|
if a++; a == 1 {
|
|
out = 10
|
|
} else {
|
|
out = 20
|
|
}
|
|
}()
|
|
`, nil, 20)
|
|
expect(t, `
|
|
func() {
|
|
a := 1
|
|
|
|
func() {
|
|
if a++; a > 1 {
|
|
a++
|
|
}
|
|
}()
|
|
|
|
out = a
|
|
}()
|
|
`, nil, 3)
|
|
|
|
// expression statement in init (should not leave objects on stack)
|
|
expect(t, `a := 1; if a; a { out = a }`, nil, 1)
|
|
expect(t, `a := 1; if a + 4; a { out = a }`, nil, 1)
|
|
|
|
// dead code elimination
|
|
expect(t, `
|
|
out = func() {
|
|
if false { return 1 }
|
|
|
|
a := undefined
|
|
|
|
a = 2
|
|
if !a {
|
|
b := func() {
|
|
return is_callable(a) ? a(8) : a
|
|
}()
|
|
if is_error(b) {
|
|
return b
|
|
} else if !is_undefined(b) {
|
|
return immutable(b)
|
|
}
|
|
}
|
|
|
|
a = 3
|
|
if a {
|
|
b := func() {
|
|
return is_callable(a) ? a(9) : a
|
|
}()
|
|
if is_error(b) {
|
|
return b
|
|
} else if !is_undefined(b) {
|
|
return immutable(b)
|
|
}
|
|
}
|
|
|
|
return a
|
|
}()
|
|
`, nil, 3)
|
|
}
|