8e059c14d7
Some test files failed to build as the go module "replace" doesn't work with test and internal packages yet. The other tests need updates to the testdata.
465 lines
13 KiB
Go
465 lines
13 KiB
Go
// Copyright (c) 2015-2016 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package treap
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import (
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"bytes"
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"crypto/sha256"
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"testing"
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)
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// TestMutableEmpty ensures calling functions on an empty mutable treap works as
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// expected.
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func TestMutableEmpty(t *testing.T) {
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t.Parallel()
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// Ensure the treap length is the expected value.
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testTreap := NewMutable()
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if gotLen := testTreap.Len(); gotLen != 0 {
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t.Fatalf("Len: unexpected length - got %d, want %d", gotLen, 0)
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}
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// Ensure the reported size is 0.
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if gotSize := testTreap.Size(); gotSize != 0 {
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t.Fatalf("Size: unexpected byte size - got %d, want 0",
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gotSize)
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}
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// Ensure there are no errors with requesting keys from an empty treap.
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key := serializeUint32(0)
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if gotVal := testTreap.Has(key); gotVal {
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t.Fatalf("Has: unexpected result - got %v, want false", gotVal)
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}
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if gotVal := testTreap.Get(key); gotVal != nil {
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t.Fatalf("Get: unexpected result - got %x, want nil", gotVal)
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}
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// Ensure there are no panics when deleting keys from an empty treap.
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testTreap.Delete(key)
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// Ensure the number of keys iterated by ForEach on an empty treap is
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// zero.
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var numIterated int
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testTreap.ForEach(func(k, v []byte) bool {
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numIterated++
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return true
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})
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if numIterated != 0 {
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t.Fatalf("ForEach: unexpected iterate count - got %d, want 0",
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numIterated)
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}
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}
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// TestMutableReset ensures that resetting an existing mutable treap works as
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// expected.
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func TestMutableReset(t *testing.T) {
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t.Parallel()
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// Insert a few keys.
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numItems := 10
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testTreap := NewMutable()
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for i := 0; i < numItems; i++ {
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key := serializeUint32(uint32(i))
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testTreap.Put(key, key)
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}
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// Reset it.
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testTreap.Reset()
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// Ensure the treap length is now 0.
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if gotLen := testTreap.Len(); gotLen != 0 {
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t.Fatalf("Len: unexpected length - got %d, want %d", gotLen, 0)
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}
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// Ensure the reported size is now 0.
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if gotSize := testTreap.Size(); gotSize != 0 {
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t.Fatalf("Size: unexpected byte size - got %d, want 0",
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gotSize)
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}
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// Ensure the treap no longer has any of the keys.
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for i := 0; i < numItems; i++ {
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key := serializeUint32(uint32(i))
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// Ensure the treap no longer has the key.
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if testTreap.Has(key) {
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t.Fatalf("Has #%d: key %q is in treap", i, key)
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}
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// Get the key that no longer exists from the treap and ensure
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// it is nil.
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if gotVal := testTreap.Get(key); gotVal != nil {
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t.Fatalf("Get #%d: unexpected value - got %x, want nil",
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i, gotVal)
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}
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}
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// Ensure the number of keys iterated by ForEach is zero.
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var numIterated int
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testTreap.ForEach(func(k, v []byte) bool {
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numIterated++
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return true
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})
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if numIterated != 0 {
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t.Fatalf("ForEach: unexpected iterate count - got %d, want 0",
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numIterated)
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}
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}
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// TestMutableSequential ensures that putting keys into a mutable treap in
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// sequential order works as expected.
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func TestMutableSequential(t *testing.T) {
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t.Parallel()
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// Insert a bunch of sequential keys while checking several of the treap
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// functions work as expected.
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expectedSize := uint64(0)
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numItems := 1000
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testTreap := NewMutable()
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for i := 0; i < numItems; i++ {
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key := serializeUint32(uint32(i))
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testTreap.Put(key, key)
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// Ensure the treap length is the expected value.
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if gotLen := testTreap.Len(); gotLen != i+1 {
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t.Fatalf("Len #%d: unexpected length - got %d, want %d",
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i, gotLen, i+1)
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}
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// Ensure the treap has the key.
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if !testTreap.Has(key) {
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t.Fatalf("Has #%d: key %q is not in treap", i, key)
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}
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// Get the key from the treap and ensure it is the expected
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// value.
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if gotVal := testTreap.Get(key); !bytes.Equal(gotVal, key) {
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t.Fatalf("Get #%d: unexpected value - got %x, want %x",
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i, gotVal, key)
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}
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// Ensure the expected size is reported.
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expectedSize += (nodeFieldsSize + 8)
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if gotSize := testTreap.Size(); gotSize != expectedSize {
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t.Fatalf("Size #%d: unexpected byte size - got %d, "+
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"want %d", i, gotSize, expectedSize)
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}
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}
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// Ensure the all keys are iterated by ForEach in order.
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var numIterated int
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testTreap.ForEach(func(k, v []byte) bool {
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wantKey := serializeUint32(uint32(numIterated))
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// Ensure the key is as expected.
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if !bytes.Equal(k, wantKey) {
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t.Fatalf("ForEach #%d: unexpected key - got %x, want %x",
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numIterated, k, wantKey)
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}
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// Ensure the value is as expected.
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if !bytes.Equal(v, wantKey) {
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t.Fatalf("ForEach #%d: unexpected value - got %x, want %x",
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numIterated, v, wantKey)
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}
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numIterated++
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return true
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})
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// Ensure all items were iterated.
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if numIterated != numItems {
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t.Fatalf("ForEach: unexpected iterate count - got %d, want %d",
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numIterated, numItems)
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}
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// Delete the keys one-by-one while checking several of the treap
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// functions work as expected.
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for i := 0; i < numItems; i++ {
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key := serializeUint32(uint32(i))
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testTreap.Delete(key)
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// Ensure the treap length is the expected value.
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if gotLen := testTreap.Len(); gotLen != numItems-i-1 {
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t.Fatalf("Len #%d: unexpected length - got %d, want %d",
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i, gotLen, numItems-i-1)
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}
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// Ensure the treap no longer has the key.
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if testTreap.Has(key) {
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t.Fatalf("Has #%d: key %q is in treap", i, key)
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}
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// Get the key that no longer exists from the treap and ensure
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// it is nil.
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if gotVal := testTreap.Get(key); gotVal != nil {
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t.Fatalf("Get #%d: unexpected value - got %x, want nil",
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i, gotVal)
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}
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// Ensure the expected size is reported.
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expectedSize -= (nodeFieldsSize + 8)
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if gotSize := testTreap.Size(); gotSize != expectedSize {
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t.Fatalf("Size #%d: unexpected byte size - got %d, "+
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"want %d", i, gotSize, expectedSize)
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}
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}
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}
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// TestMutableReverseSequential ensures that putting keys into a mutable treap
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// in reverse sequential order works as expected.
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func TestMutableReverseSequential(t *testing.T) {
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t.Parallel()
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// Insert a bunch of sequential keys while checking several of the treap
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// functions work as expected.
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expectedSize := uint64(0)
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numItems := 1000
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testTreap := NewMutable()
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for i := 0; i < numItems; i++ {
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key := serializeUint32(uint32(numItems - i - 1))
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testTreap.Put(key, key)
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// Ensure the treap length is the expected value.
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if gotLen := testTreap.Len(); gotLen != i+1 {
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t.Fatalf("Len #%d: unexpected length - got %d, want %d",
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i, gotLen, i+1)
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}
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// Ensure the treap has the key.
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if !testTreap.Has(key) {
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t.Fatalf("Has #%d: key %q is not in treap", i, key)
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}
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// Get the key from the treap and ensure it is the expected
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// value.
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if gotVal := testTreap.Get(key); !bytes.Equal(gotVal, key) {
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t.Fatalf("Get #%d: unexpected value - got %x, want %x",
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i, gotVal, key)
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}
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// Ensure the expected size is reported.
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expectedSize += (nodeFieldsSize + 8)
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if gotSize := testTreap.Size(); gotSize != expectedSize {
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t.Fatalf("Size #%d: unexpected byte size - got %d, "+
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"want %d", i, gotSize, expectedSize)
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}
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}
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// Ensure the all keys are iterated by ForEach in order.
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var numIterated int
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testTreap.ForEach(func(k, v []byte) bool {
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wantKey := serializeUint32(uint32(numIterated))
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// Ensure the key is as expected.
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if !bytes.Equal(k, wantKey) {
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t.Fatalf("ForEach #%d: unexpected key - got %x, want %x",
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numIterated, k, wantKey)
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}
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// Ensure the value is as expected.
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if !bytes.Equal(v, wantKey) {
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t.Fatalf("ForEach #%d: unexpected value - got %x, want %x",
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numIterated, v, wantKey)
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}
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numIterated++
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return true
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})
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// Ensure all items were iterated.
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if numIterated != numItems {
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t.Fatalf("ForEach: unexpected iterate count - got %d, want %d",
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numIterated, numItems)
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}
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// Delete the keys one-by-one while checking several of the treap
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// functions work as expected.
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for i := 0; i < numItems; i++ {
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// Intentionally use the reverse order they were inserted here.
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key := serializeUint32(uint32(i))
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testTreap.Delete(key)
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// Ensure the treap length is the expected value.
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if gotLen := testTreap.Len(); gotLen != numItems-i-1 {
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t.Fatalf("Len #%d: unexpected length - got %d, want %d",
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i, gotLen, numItems-i-1)
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}
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// Ensure the treap no longer has the key.
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if testTreap.Has(key) {
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t.Fatalf("Has #%d: key %q is in treap", i, key)
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}
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// Get the key that no longer exists from the treap and ensure
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// it is nil.
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if gotVal := testTreap.Get(key); gotVal != nil {
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t.Fatalf("Get #%d: unexpected value - got %x, want nil",
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i, gotVal)
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}
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// Ensure the expected size is reported.
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expectedSize -= (nodeFieldsSize + 8)
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if gotSize := testTreap.Size(); gotSize != expectedSize {
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t.Fatalf("Size #%d: unexpected byte size - got %d, "+
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"want %d", i, gotSize, expectedSize)
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}
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}
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}
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// TestMutableUnordered ensures that putting keys into a mutable treap in no
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// paritcular order works as expected.
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func TestMutableUnordered(t *testing.T) {
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t.Parallel()
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// Insert a bunch of out-of-order keys while checking several of the
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// treap functions work as expected.
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expectedSize := uint64(0)
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numItems := 1000
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testTreap := NewMutable()
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for i := 0; i < numItems; i++ {
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// Hash the serialized int to generate out-of-order keys.
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hash := sha256.Sum256(serializeUint32(uint32(i)))
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key := hash[:]
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testTreap.Put(key, key)
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// Ensure the treap length is the expected value.
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if gotLen := testTreap.Len(); gotLen != i+1 {
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t.Fatalf("Len #%d: unexpected length - got %d, want %d",
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i, gotLen, i+1)
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}
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// Ensure the treap has the key.
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if !testTreap.Has(key) {
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t.Fatalf("Has #%d: key %q is not in treap", i, key)
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}
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// Get the key from the treap and ensure it is the expected
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// value.
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if gotVal := testTreap.Get(key); !bytes.Equal(gotVal, key) {
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t.Fatalf("Get #%d: unexpected value - got %x, want %x",
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i, gotVal, key)
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}
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// Ensure the expected size is reported.
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expectedSize += nodeFieldsSize + uint64(len(key)+len(key))
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if gotSize := testTreap.Size(); gotSize != expectedSize {
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t.Fatalf("Size #%d: unexpected byte size - got %d, "+
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"want %d", i, gotSize, expectedSize)
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}
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}
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// Delete the keys one-by-one while checking several of the treap
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// functions work as expected.
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for i := 0; i < numItems; i++ {
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// Hash the serialized int to generate out-of-order keys.
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hash := sha256.Sum256(serializeUint32(uint32(i)))
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key := hash[:]
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testTreap.Delete(key)
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// Ensure the treap length is the expected value.
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if gotLen := testTreap.Len(); gotLen != numItems-i-1 {
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t.Fatalf("Len #%d: unexpected length - got %d, want %d",
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i, gotLen, numItems-i-1)
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}
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// Ensure the treap no longer has the key.
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if testTreap.Has(key) {
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t.Fatalf("Has #%d: key %q is in treap", i, key)
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}
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// Get the key that no longer exists from the treap and ensure
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// it is nil.
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if gotVal := testTreap.Get(key); gotVal != nil {
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t.Fatalf("Get #%d: unexpected value - got %x, want nil",
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i, gotVal)
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}
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// Ensure the expected size is reported.
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expectedSize -= (nodeFieldsSize + 64)
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if gotSize := testTreap.Size(); gotSize != expectedSize {
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t.Fatalf("Size #%d: unexpected byte size - got %d, "+
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"want %d", i, gotSize, expectedSize)
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}
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}
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}
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// TestMutableDuplicatePut ensures that putting a duplicate key into a mutable
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// treap updates the existing value.
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func TestMutableDuplicatePut(t *testing.T) {
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t.Parallel()
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key := serializeUint32(0)
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val := []byte("testval")
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// Put the key twice with the second put being the expected final value.
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testTreap := NewMutable()
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testTreap.Put(key, key)
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testTreap.Put(key, val)
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// Ensure the key still exists and is the new value.
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if gotVal := testTreap.Has(key); !gotVal {
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t.Fatalf("Has: unexpected result - got %v, want true", gotVal)
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}
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if gotVal := testTreap.Get(key); !bytes.Equal(gotVal, val) {
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t.Fatalf("Get: unexpected result - got %x, want %x", gotVal, val)
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}
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// Ensure the expected size is reported.
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expectedSize := uint64(nodeFieldsSize + len(key) + len(val))
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if gotSize := testTreap.Size(); gotSize != expectedSize {
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t.Fatalf("Size: unexpected byte size - got %d, want %d",
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gotSize, expectedSize)
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}
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}
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// TestMutableNilValue ensures that putting a nil value into a mutable treap
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// results in a key being added with an empty byte slice.
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func TestMutableNilValue(t *testing.T) {
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t.Parallel()
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key := serializeUint32(0)
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// Put the key with a nil value.
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testTreap := NewMutable()
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testTreap.Put(key, nil)
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// Ensure the key exists and is an empty byte slice.
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if gotVal := testTreap.Has(key); !gotVal {
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t.Fatalf("Has: unexpected result - got %v, want true", gotVal)
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}
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if gotVal := testTreap.Get(key); gotVal == nil {
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t.Fatalf("Get: unexpected result - got nil, want empty slice")
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}
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if gotVal := testTreap.Get(key); len(gotVal) != 0 {
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t.Fatalf("Get: unexpected result - got %x, want empty slice",
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gotVal)
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}
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}
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// TestMutableForEachStopIterator ensures that returning false from the ForEach
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// callback of a mutable treap stops iteration early.
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func TestMutableForEachStopIterator(t *testing.T) {
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t.Parallel()
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// Insert a few keys.
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numItems := 10
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testTreap := NewMutable()
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for i := 0; i < numItems; i++ {
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key := serializeUint32(uint32(i))
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testTreap.Put(key, key)
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}
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// Ensure ForEach exits early on false return by caller.
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var numIterated int
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testTreap.ForEach(func(k, v []byte) bool {
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numIterated++
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return numIterated != numItems/2
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})
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if numIterated != numItems/2 {
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t.Fatalf("ForEach: unexpected iterate count - got %d, want %d",
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numIterated, numItems/2)
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}
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}
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