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pkg_test.go
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pkg_test.go
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package trie
import "testing"
func TestBWTrie(t *testing.T) {
trie := NewBWTrie()
if trie == nil {
t.Error("Expected a new Trie")
return
}
if trie.Exists("asdf") {
t.Errorf("Expected get on empty trie to fail")
}
trie.Add("asdf")
if trie.Exists("asdf") == false {
t.Errorf("Expected get on added key to be true")
}
if trie.Exists("AAA") {
t.Errorf("Expected trie to be case insensitive")
}
if trie.Exists("aaaa") {
t.Errorf("Expected get on non-added key to still be false")
}
if trie.Exists("aa") {
t.Errorf("Expected get on non-added prefix of a key to be false")
}
trie.Add("aaab")
if trie.Exists("aaab") == false {
t.Errorf("Expected get on added key to be true")
}
if trie.Exists("asdf") == false {
t.Errorf("Expected get on added key to be true")
}
trie.Del("aaab")
if trie.Exists("aaab") {
t.Errorf("Expected get on deleted key to be false")
}
if trie.Exists("asdf") == false {
t.Errorf("Expected get on added key to be true")
}
trie.Add("y")
trie.Add("yy")
trie.Add("yyy")
trie.Add("yyyy")
trie.Add("yyyyy")
trie.Del("y")
trie.Del("yy")
trie.Del("yyy")
trie.Del("yyyy")
trie.Del("yyyyy")
trie.Add("w")
trie.Add("ww")
trie.Add("www")
trie.Add("wwww")
trie.Add("wwwww")
trie.Del("wwwww")
trie.Del("wwww")
trie.Del("www")
trie.Del("ww")
trie.Del("w")
trie.Add("z")
trie.Add("zz")
trie.Add("zzz")
trie.Add("zzzz")
trie.Add("zzzzz")
trie.Del("zz")
trie.Del("z")
trie.Del("zzzz")
trie.Del("zzz")
trie.Del("zzzzz")
trie.Add("bbb")
trie.Add("xx")
trie.Add("qqq")
trie.Add("qqqq")
trie.Add("qqqqq")
trie.Add("xxx")
trie.Add("xxx")
trie.Add("xxx")
trie.Del("qqq")
var found = trie.Count()
trie.Add("nnn")
trie.Add("nnnnn")
trie.Add("nnnnnn")
trie.Add("nnnnnnn")
trie.Add("nnnnnnnn")
trie.Add("nnnnnnnnn")
found = trie.Count()
if found != 12 {
t.Errorf("Expected 12 values when iterating, got %d", found)
}
trie.Drop("nnnnnnn")
found = trie.Count()
if found != 9 {
t.Errorf("Expected 9 values when iterating, got %d", found)
}
trie.Drop("nnnn")
found = trie.Count()
if found != 7 {
t.Errorf("Expected 7 values when iterating, got %d", found)
}
trie.Drop("n")
found = trie.Count()
if found != 6 {
t.Errorf("Expected 6 values when iterating, got %d", found)
}
}
func TestKVIterateFrom(t *testing.T) {
var trie = NewKVTrie()
trie.Add("b")
trie.Add("a")
trie.Add("aa")
trie.Add("aaa")
trie.Add("aab")
trie.Add("aabb")
trie.Add("aaaa")
if c := len(trie.GetBranch("")); c != 7 {
t.Errorf("Expected prefix iteration to return 6 results from '', found %d", c)
}
if c := len(trie.GetBranch("a")); c != 6 {
t.Errorf("Expected prefix iteration to return 6 results from 'a', found %d", c)
}
if c := len(trie.GetBranch("aa")); c != 5 {
t.Errorf("Expected prefix iteration to return 5 results from 'aa', found %d", c)
}
if c := len(trie.GetBranch("aaa")); c != 2 {
t.Errorf("Expected prefix iteration to return 2 results from 'aaa', found %d", c)
}
}
func TestBWIterateFrom(t *testing.T) {
var trie = NewBWTrie()
trie.Add("b")
trie.Add("a")
trie.Add("aa")
trie.Add("aaa")
trie.Add("aab")
trie.Add("aabb")
trie.Add("aaaa")
if c := len(trie.GetBranch("")); c != 7 {
t.Errorf("Expected prefix iteration to return 6 results from '', found %d", c)
}
if c := len(trie.GetBranch("a")); c != 6 {
t.Errorf("Expected prefix iteration to return 6 results from 'a', found %d", c)
}
if c := len(trie.GetBranch("aa")); c != 5 {
t.Errorf("Expected prefix iteration to return 5 results from 'aa', found %d", c)
}
if c := len(trie.GetBranch("aaa")); c != 2 {
t.Errorf("Expected prefix iteration to return 2 results from 'aaa', found %d", c)
}
}
func TestKVTrie(t *testing.T) {
trie := NewKVTrie()
trie.Add("to", "data: to")
trie.Add("tea", "data: tea")
trie.Add("ten", "data: ten")
if e, v := trie.Get("to"); !e || v == nil {
t.Errorf("Expected key 'to' to exist, and return non nil data")
} else if v.(string) != "data: to" {
t.Errorf("Expected 'to' to conaint 'data: to', got: '%s'", v.(string))
}
if e, v := trie.Get("tea"); !e || v == nil {
t.Errorf("Expected key 'tea' to exist, and return non nil data")
} else if v.(string) != "data: tea" {
t.Errorf("Expected 'tea' to contain 'data: tea', got: '%s'", v.(string))
}
trie.Set("to", "newdata")
if e, v := trie.Get("to"); !e || v == nil {
t.Errorf("Expected key 'to' to exist, and return non nil data")
} else if v.(string) != "newdata" {
t.Errorf("Expected 'to' to conaint 'newdata', got: '%s'", v.(string))
}
trie.Del("to")
if e, v := trie.Get("to"); e || v != nil {
t.Errorf("Expected key 'tea' to be nil, and return nil data")
}
if e, v := trie.Get("tea"); !e || v == nil {
t.Errorf("Expected key 'tea' to exist, and return non nil data")
} else if v.(string) != "data: tea" {
t.Errorf("Expected 'tea' to contain 'data: tea', got: '%s'", v.(string))
}
trie.Drop("te")
if e, v := trie.Get("ten"); e || v != nil {
t.Errorf("Expected key 'ten' to be nil, and return nil data")
}
if e, v := trie.Get("tea"); e || v != nil {
t.Errorf("Expected key 'tea' to be nil, and return nil data")
}
}