buf_test.go

package main

import (
	"testing"
)

// Let's make sure our test fixture has the right form.
func TestBufferDelete(t *testing.T) {
	tab := []struct {
		q0, q1   int
		tb       Buffer
		expected string
	}{
		{0, 5, Buffer([]rune("0123456789")), "56789"},
		{0, 0, Buffer([]rune("0123456789")), "0123456789"},
		{0, 10, Buffer([]rune("0123456789")), ""},
		{1, 5, Buffer([]rune("0123456789")), "056789"},
		{8, 10, Buffer([]rune("0123456789")), "01234567"},
	}
	for _, test := range tab {
		tb := test.tb
		tb.Delete(test.q0, test.q1)
		if string(tb) != test.expected {
			t.Errorf("Delete Failed.  Expected %v, got %v", test.expected, string(tb))
		}
	}
}

func TestBufferInsert(t *testing.T) {
	tab := []struct {
		q0       int
		tb       Buffer
		insert   string
		expected string
	}{
		{5, Buffer([]rune("01234")), "56789", "0123456789"},
		{0, Buffer([]rune("56789")), "01234", "0123456789"},
		{1, Buffer([]rune("06789")), "12345", "0123456789"},
		{5, Buffer([]rune("01234")), "56789", "0123456789"},
	}
	for _, test := range tab {
		tb := test.tb
		tb.Insert(test.q0, []rune(test.insert))
		if string(tb) != test.expected {
			t.Errorf("Insert Failed.  Expected %v, got %v", test.expected, string(tb))
		}
	}
}