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package pass
import (
"strings"
"testing"
"github.com/mmcloughlin/avo/ir"
"github.com/mmcloughlin/avo/operand"
"github.com/mmcloughlin/avo/reg"
)
func TestVerifyMemOperands(t *testing.T) {
i := &ir.Instruction{
Operands: []operand.Op{
reg.RAX,
operand.Mem{
Base: reg.R10,
Disp: 42,
},
},
}
if err := VerifyMemOperands(i); err != nil {
t.Fatal(err)
}
}
func TestVerifyMemOperandsErrors(t *testing.T) {
cases := []struct {
Operands []operand.Op
ErrorSubstring string
}{
{
Operands: []operand.Op{
reg.RAX,
operand.Mem{
Disp: 42,
},
},
ErrorSubstring: "missing base",
},
{
Operands: []operand.Op{
operand.Mem{
Base: reg.EBX,
Index: reg.R9L,
},
reg.ECX,
},
ErrorSubstring: "index register with scale 0",
},
}
for _, c := range cases {
i := &ir.Instruction{Operands: c.Operands}
if err := VerifyMemOperands(i); err == nil || !strings.Contains(err.Error(), c.ErrorSubstring) {
t.Errorf("got error %v; expected error to contain %q", err, c.ErrorSubstring)
}
}
}
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