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package parsec
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestParsify(t *testing.T) {
p := Pointer{"ffooo", 0}
t.Run("strings", func(t *testing.T) {
node, _ := Parsify("ff")(p)
require.Equal(t, NewToken(0, "ff"), node)
})
t.Run("parsers", func(t *testing.T) {
node, _ := Parsify(CharRun("f"))(p)
require.Equal(t, NewToken(0, "ff"), node)
})
t.Run("*parsers", func(t *testing.T) {
var parser Parser
parserfied := Parsify(&parser)
parser = CharRun("f")
node, _ := parserfied(p)
require.Equal(t, NewToken(0, "ff"), node)
})
}
func TestExact(t *testing.T) {
p := Pointer{"fooo", 0}
t.Run("success", func(t *testing.T) {
node, p2 := Exact("fo")(p)
require.Equal(t, NewToken(0, "fo"), node)
require.Equal(t, p.Advance(2), p2)
})
t.Run("error", func(t *testing.T) {
node, p2 := Exact("bar")(p)
require.Equal(t, NewError(0, "Expected bar"), node)
require.Equal(t, 0, p2.pos)
})
}
func TestChar(t *testing.T) {
p := Pointer{"foobar", 0}
t.Run("success", func(t *testing.T) {
node, p2 := Char("fo")(p)
require.Equal(t, NewToken(0, "f"), node)
require.Equal(t, p.Advance(1), p2)
})
t.Run("error", func(t *testing.T) {
node, p2 := Char("bar")(p)
require.Equal(t, NewError(0, "Expected one of bar"), node)
require.Equal(t, 0, p2.pos)
})
}
func TestCharRun(t *testing.T) {
p := Pointer{"foobar", 0}
t.Run("success", func(t *testing.T) {
node, p2 := CharRun("fo")(p)
require.Equal(t, NewToken(0, "foo"), node)
require.Equal(t, p.Advance(3), p2)
})
t.Run("error", func(t *testing.T) {
node, p2 := CharRun("bar")(p)
require.Equal(t, NewError(0, "Expected some of bar"), node)
require.Equal(t, 0, p2.pos)
})
}
func TestCharUntil(t *testing.T) {
p := Pointer{"foobar", 0}
t.Run("success", func(t *testing.T) {
node, p2 := CharRunUntil("z")(p)
require.Equal(t, NewToken(0, "foobar"), node)
require.Equal(t, p.Advance(6), p2)
})
t.Run("error", func(t *testing.T) {
node, p2 := CharRunUntil("f")(p)
require.Equal(t, NewError(0, "Expected some of f"), node)
require.Equal(t, 0, p2.pos)
})
}
func TestWS(t *testing.T) {
p := Pointer{" fooo", 0}
node, p2 := WS(p)
require.Equal(t, nil, node)
require.Equal(t, p.Advance(2), p2)
}
func TestRange(t *testing.T) {
require.Equal(t, "abcdefg", Range("a-g"))
require.Equal(t, "01234abcd", Range("0-4a-d"))
}
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