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enfa_test.go
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package enfa
import "testing"
func TestBasic(t *testing.T) {
nfa := NewENFA(0, false)
nfa.AddState(1, false)
nfa.AddState(2, true)
nfa.AddTransition(0, "a", 1)
nfa.AddTransition(1, "b", 2)
if ret := nfa.Input("a"); ret[0] != 1 {
t.Errorf("Expect 1, but get %d\n", ret)
}
if ret := nfa.Input("b"); ret[0] != 2 {
t.Errorf("Expect 2, but get %d\n", ret)
}
if !nfa.Verify() {
t.Errorf("Verify is failed")
}
}
func TestVerifyInputs(t *testing.T) {
nfa := NewENFA(0, false)
nfa.AddState(1, false)
nfa.AddState(2, true)
nfa.AddTransition(0, "a", 1)
nfa.AddTransition(1, "b", 2)
var inputs []string
inputs = append(inputs, "a")
inputs = append(inputs, "b")
if !nfa.VerifyInputs(inputs) {
t.Errorf("Verify Inputs is failed")
}
nfa.PrintTransitionTable()
}
func TestAdvancenfa(t *testing.T) {
nfa := NewENFA(0, false)
nfa.AddState(1, true)
nfa.AddState(2, false)
nfa.AddTransition(0, "0", 0)
nfa.AddTransition(0, "1", 1)
nfa.AddTransition(1, "0", 0)
nfa.AddTransition(1, "1", 2)
nfa.AddTransition(2, "0", 2)
nfa.AddTransition(2, "1", 2)
nfa.PrintTransitionTable()
inputs := []string{"0", "0", "1", "0", "1"}
if !nfa.VerifyInputs(inputs) {
t.Errorf("Verify inputs is failed")
}
//Reset the nfa for another verification
nfa.Reset()
//Test go to dead state 2
inputs2 := []string{"1", "1", "0", "0", "0"}
if nfa.VerifyInputs(inputs2) {
t.Errorf("Verify inputs is failed")
}
}
func TestNFA(t *testing.T) {
nfa := NewENFA(0, false)
nfa.AddState(1, true)
nfa.AddState(2, false)
nfa.AddTransition(0, "0", 0, 1)
nfa.AddTransition(0, "1", 1)
nfa.AddTransition(1, "0", 0)
nfa.AddTransition(1, "1", 2)
nfa.AddTransition(2, "0", 2)
nfa.AddTransition(2, "1", 2, 0)
nfa.PrintTransitionTable()
inputs := []string{"0", "0", "1", "0", "1"}
if !nfa.VerifyInputs(inputs) {
t.Errorf("Verify inputs is failed")
}
inputs2 := []string{"0", "0", "0", "0", "1"}
if !nfa.VerifyInputs(inputs2) {
t.Errorf("Verify inputs2 is failed")
}
inputs3 := []string{"0", "1", "2"}
if nfa.VerifyInputs(inputs3) {
t.Errorf("Verify inputs3 is failed")
}
}
func TestEpsilonNFA(t *testing.T) {
nfa := NewENFA(0, false)
nfa.AddState(1, false)
nfa.AddState(2, false)
nfa.AddState(3, true)
nfa.AddState(4, false)
nfa.AddState(5, false)
nfa.AddTransition(0, "1", 1)
nfa.AddTransition(0, "0", 4)
nfa.AddTransition(1, "1", 2)
nfa.AddTransition(1, "", 3) //epsilon
nfa.AddTransition(2, "1", 3)
nfa.AddTransition(4, "0", 5)
nfa.AddTransition(4, "", 1, 2) //E -> epsilon B C
nfa.AddTransition(5, "0", 3)
nfa.PrintTransitionTable()
if !nfa.VerifyInputs([]string{"1"}) {
t.Errorf("Verify inputs is failed")
}
nfa.Reset()
if !nfa.VerifyInputs([]string{"1", "1", "1"}) {
t.Errorf("Verify inputs is failed")
}
nfa.Reset()
if !nfa.VerifyInputs([]string{"0", "1"}) {
t.Errorf("Verify inputs is failed")
}
nfa.Reset()
if !nfa.VerifyInputs([]string{"0", "0", "0"}) {
t.Errorf("Verify inputs is failed")
}
}