func TestLexerSmall(t *testing.T) {
s := `abcdefghijklm`
z := NewLexerSize(test.NewPlainReader(bytes.NewBufferString(s)), 4)
test.That(t, z.Peek(8) == 'i', "first character must be 'i' at position 8")
z = NewLexerSize(test.NewPlainReader(bytes.NewBufferString(s)), 4)
test.That(t, z.Peek(12) == 'm', "first character must be 'm' at position 12")
z = NewLexerSize(test.NewPlainReader(bytes.NewBufferString(s)), 0)
test.That(t, z.Peek(4) == 'e', "first character must be 'e' at position 4")
z = NewLexerSize(test.NewPlainReader(bytes.NewBufferString(s)), 13)
test.That(t, z.Peek(13) == 0, "thirteenth character must yield error")
}
func TestLexerShift(t *testing.T) {
s := `Lorem ipsum dolor sit amet, consectetur adipiscing elit.`
z := NewLexerSize(test.NewPlainReader(bytes.NewBufferString(s)), 5)
z.Move(len("Lorem "))
test.Bytes(t, z.Shift(), []byte("Lorem "), "shift must return the buffered string")
test.That(t, z.ShiftLen() == len("Lorem "), "shifted length must equal last shift")
}
func TestReader(t *testing.T) {
input := "x:a;"
p := NewParser(test.NewPlainReader(bytes.NewBufferString(input)), true)
for {
gt, _, _ := p.Next()
if gt == ErrorGrammar {
break
}
}
}
func TestShifterZeroLen(t *testing.T) {
var z = NewShifter(test.NewPlainReader(bytes.NewBufferString("")))
test.That(t, z.Peek(0) == 0, "first character must yield error")
}
func TestShifterSmall(t *testing.T) {
s := `abcdefghi`
z := NewShifterSize(test.NewPlainReader(bytes.NewBufferString(s)), 4)
test.That(t, z.Peek(8) == 'i', "first character must be 'i' at position 8")
}