neoneo-go/pkg/compiler/return_test.go
Evgenii Stratonikov 8b922c057c compiler: fix a bug with assignment to underscore
When using underscore it does not appear in the list
of local variables, so it can't be assigned.
In this commit the value is dropped.
2020-01-29 17:07:55 +03:00

86 lines
1.1 KiB
Go

package compiler_test
import (
"math/big"
"testing"
)
func TestMultipleReturn1(t *testing.T) {
src := `
package hello
func two() (int, int) {
return 5, 9
}
func Main() int {
a, _ := two()
return a
}
`
eval(t, src, big.NewInt(5))
}
func TestMultipleReturn2(t *testing.T) {
src := `
package hello
func two() (int, int) {
return 5, 9
}
func Main() int {
_, b := two()
return b
}
`
eval(t, src, big.NewInt(9))
}
func TestMultipleReturnUnderscore(t *testing.T) {
src := `
package hello
func f3() (int, int, int) {
return 5, 6, 7
}
func Main() int {
a, _, c := f3()
return a+c
}
`
eval(t, src, big.NewInt(12))
}
func TestMultipleReturnWithArg(t *testing.T) {
src := `
package hello
func inc2(a int) (int, int) {
return a+1, a+2
}
func Main() int {
a, b := 3, 9
a, b = inc2(a)
return a+b
}
`
eval(t, src, big.NewInt(9))
}
func TestSingleReturn(t *testing.T) {
src := `
package hello
func inc(k int) int {
return k+1
}
func Main() int {
a, b := inc(3), inc(4)
return a+b
}
`
eval(t, src, big.NewInt(9))
}