value_test.go

// Copyright 2019 GRAIL, Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.

package diviner_test

import (
	"testing"

	"github.com/grailbio/diviner"
)

func TestValue(t *testing.T) {
	if diviner.Int(1) != diviner.Int(1) {
		t.Error("integers not comparable")
	}
	if diviner.Float(12.3) != diviner.Float(12.3) {
		t.Error("floats not comparable")
	}
	if diviner.String("xyz") != diviner.String("xyz") {
		t.Error("strings not comparable")
	}
}

func TestList(t *testing.T) {
	l1 := diviner.List{diviner.Int(10), diviner.Int(20)}
	l2 := diviner.List{diviner.Int(5), diviner.Int(20)}
	if l1.Less(l1) {
		t.Error("l1.Less(l1)")
	}
	if !l2.Less(l1) {
		t.Error("expected l2.Less(l1)")
	}
}

func TestHash(t *testing.T) {
	for i, test := range []struct {
		val  diviner.Value
		hash uint64
	}{
		{diviner.List{diviner.Int(10), diviner.Int(20)}, 1283048665539793019},
		{diviner.Int(10), 16038372209008516879},
		{diviner.Float(0.3), 4912920084111300745},
		{diviner.String("okay"), 3625577695725878441},
	} {
		if got, want := diviner.Hash(test.val), test.hash; got != want {
			t.Errorf("test %d: wrong hash for value %s: got %v, want %v", i, test.val, got, want)
		}
	}
}