Artifact 3c67937d6cd7fc2351b62a7d705126c821dfd158:

• File src/0dev.org/bits/bits_test.go — part of check-in [d5adabf68e] at 2014-12-14 01:03:44 on branch trunk — [bits] fixed package documentation [bits] added tests for the bool-backed vector [diff] added a real test, commented out the visual debug aids [plaindiff] added comments, removed commented code, added a helper []line getter [math] removed math package as it is currently unused (user: spaskalev, size: 2183) [annotate] [blame] [check-ins using]

package bits

import (
	"strconv"
	"testing"
)

var sizes []uint = []uint{0, 31, 32, 33, 61, 63, 64, 127, 128, 129}

func TestBitSize(t *testing.T) {
	for _, size := range sizes {
		v := NewBit(size)
		if v.Len() < size || v.Len() > size+strconv.IntSize {
			t.Error("Invalid length", v.Len(), "expected", size)
		}
	}
}

func TestBitEmpty(t *testing.T) {
	var size uint = 128
	v := NewBit(size)

	// Check if it is empty by default
	for i := uint(0); i < size; i++ {
		if v.Peek(i) {
			t.Error("Invalid raised bit at", i)
		}
	}
}

func TestBitBasic(t *testing.T) {
	var size uint = 128
	v := NewBit(size)

	// Raise and lower each position explicitly
	for i := uint(0); i < size; i++ {
		v.Poke(i, true)
		if !v.Peek(i) {
			t.Error("Invalid lowered bit at", i)
		}

		v.Poke(i, false)
		if v.Peek(i) {
			t.Error("Invalid raised bit at", i)
		}
	}
}

func TestBitFlip(t *testing.T) {
	var size uint = 128
	v := NewBit(size)

	// Raise and lower each position by flipping
	for i := uint(0); i < size; i++ {
		v.Flip(i)
		if !v.Peek(i) {
			t.Error("Invalid lowered bit at", i)
		}

		v.Flip(i)
		if v.Peek(i) {
			t.Error("Invalid raised bit at", i)
		}
	}
}

func TestBoolSize(t *testing.T) {
	for _, size := range sizes {
		v := NewBool(size)
		if v.Len() != size {
			t.Error("Invalid length", v.Len(), "expected", size)
		}
	}
}

func TestBoolEmpty(t *testing.T) {
	var size uint = 128
	v := NewBool(size)

	// Check if it is empty by default
	for i := uint(0); i < size; i++ {
		if v.Peek(i) {
			t.Error("Invalid raised bit at", i)
		}
	}
}

func TestBoolBasic(t *testing.T) {
	var size uint = 128
	v := NewBool(size)

	// Raise and lower each position explicitly
	for i := uint(0); i < size; i++ {
		v.Poke(i, true)
		if !v.Peek(i) {
			t.Error("Invalid lowered bit at", i)
		}

		v.Poke(i, false)
		if v.Peek(i) {
			t.Error("Invalid raised bit at", i)
		}
	}
}

func TestBoolFlip(t *testing.T) {
	var size uint = 128
	v := NewBool(size)

	// Raise and lower each position by flipping
	for i := uint(0); i < size; i++ {
		v.Flip(i)
		if !v.Peek(i) {
			t.Error("Invalid lowered bit at", i)
		}

		v.Flip(i)
		if v.Peek(i) {
			t.Error("Invalid raised bit at", i)
		}
	}
}