package nizk

import (
	"testing"

	. "kesim.org/seal/common"
)

func TestStage1(t *testing.T) {
	id := Curve.RandomScalar()
	b1 := NewBit(id, true)
	b2 := NewBit(id, false)
	bc1, _ := b1.Commit()
	bc2, _ := b2.Commit()
	st1 := b1.Stage1()
	st2 := b2.Stage1()

	c1, pr1 := st1.Commit()
	c2, pr2 := st2.Commit()
	if !c1.Verify(bc1, pr1) {
		t.Fatal("Could not verify st1 with c1 and pr1, plus=true case")
	}
	if !c2.Verify(bc2, pr2) {
		t.Fatal("Could not verify st2 with c2 and pr2, plus=false case")
	}
	// Wrong proof test
	if c1.Verify(bc1, pr2) {
		t.Fatal("Shouldn't be able to verify c1 with pr2")
	}
}

func TestStage1FromScalars(t *testing.T) {
	var id, x, y, r, α, β *Scalar
	for _, s := range []**Scalar{&id, &x, &y, &r, &α, &β} {
		*s = Curve.RandomScalar()
	}

	b1 := NewBitFromScalars(id, true, α, β)
	b2 := NewBitFromScalars(id, false, α, β)
	st1 := b1.Stage1FromScalars(x, y, r)
	st2 := b2.Stage1FromScalars(x, y, r)

	bc1, _ := b1.Commit()
	bc2, _ := b2.Commit()
	c1, pr1 := st1.Commit()
	c2, pr2 := st2.Commit()
	if !c1.Verify(bc1, pr1) {
		t.Fatal("Could not verify st1 with c1 and pr1, plus=true case")
	}
	if !c2.Verify(bc2, pr2) {
		t.Fatal("Could not verify st2 with c2 and pr2, plus=false case")
	}
	// Wrong proof test
	if c1.Verify(bc2, pr2) {
		t.Fatal("Shouldn't be able to verify c1 with pr2")
	}
}