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