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package algtest
import (
"math/big"
"reflect"
"testing"
"github.com/mmcloughlin/addchain"
"github.com/mmcloughlin/addchain/alg"
)
// AssertChainAlgorithmGenerates asserts that the algorithm generates the expected chain for n.
func AssertChainAlgorithmGenerates(t *testing.T, a alg.ChainAlgorithm, n *big.Int, expect addchain.Chain) {
c, err := a.FindChain(n)
if err != nil {
t.Fatal(err)
}
if err := c.Validate(); err != nil {
t.Error(err)
}
if !reflect.DeepEqual(expect, c) {
t.Fatalf("got %v; expect %v", c, expect)
}
}
// AssertChainAlgorithmProduces verifies that a returns a valid chain for n.
func AssertChainAlgorithmProduces(t *testing.T, a alg.ChainAlgorithm, n *big.Int) addchain.Chain {
c, err := a.FindChain(n)
if err != nil {
t.Fatal(err)
}
err = c.Produces(n)
if err != nil {
t.Log(c)
t.Fatal(err)
}
return c
}
// AssertSequenceAlgorithmProduces verifies that a returns a valid chain containing targets.
func AssertSequenceAlgorithmProduces(t *testing.T, a alg.SequenceAlgorithm, targets []*big.Int) addchain.Chain {
c, err := a.FindSequence(targets)
if err != nil {
t.Fatal(err)
}
err = c.Superset(targets)
if err != nil {
t.Log(c)
t.Fatal(err)
}
return c
}
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