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Copy pathpos_scanner_test.go
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193 lines (189 loc) · 4 KB
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package hcl
import (
"bufio"
"reflect"
"testing"
"github.com/davecgh/go-spew/spew"
)
func TestPosScanner(t *testing.T) {
tests := map[string]struct {
Input string
Want []Range
WantToks [][]byte
}{
"empty": {
"",
[]Range{},
[][]byte{},
},
"single line": {
"hello",
[]Range{
{
Start: Pos{Byte: 0, Line: 1, Column: 1},
End: Pos{Byte: 5, Line: 1, Column: 6},
},
},
[][]byte{
[]byte("hello"),
},
},
"single line with trailing UNIX newline": {
"hello\n",
[]Range{
{
Start: Pos{Byte: 0, Line: 1, Column: 1},
End: Pos{Byte: 5, Line: 1, Column: 6},
},
},
[][]byte{
[]byte("hello"),
},
},
"single line with trailing Windows newline": {
"hello\r\n",
[]Range{
{
Start: Pos{Byte: 0, Line: 1, Column: 1},
End: Pos{Byte: 5, Line: 1, Column: 6},
},
},
[][]byte{
[]byte("hello"),
},
},
"two lines with UNIX newline": {
"hello\nworld",
[]Range{
{
Start: Pos{Byte: 0, Line: 1, Column: 1},
End: Pos{Byte: 5, Line: 1, Column: 6},
},
{
Start: Pos{Byte: 6, Line: 2, Column: 1},
End: Pos{Byte: 11, Line: 2, Column: 6},
},
},
[][]byte{
[]byte("hello"),
[]byte("world"),
},
},
"two lines with Windows newline": {
"hello\r\nworld",
[]Range{
{
Start: Pos{Byte: 0, Line: 1, Column: 1},
End: Pos{Byte: 5, Line: 1, Column: 6},
},
{
Start: Pos{Byte: 7, Line: 2, Column: 1},
End: Pos{Byte: 12, Line: 2, Column: 6},
},
},
[][]byte{
[]byte("hello"),
[]byte("world"),
},
},
"blank line with UNIX newlines": {
"hello\n\nworld",
[]Range{
{
Start: Pos{Byte: 0, Line: 1, Column: 1},
End: Pos{Byte: 5, Line: 1, Column: 6},
},
{
Start: Pos{Byte: 6, Line: 2, Column: 1},
End: Pos{Byte: 6, Line: 2, Column: 1},
},
{
Start: Pos{Byte: 7, Line: 3, Column: 1},
End: Pos{Byte: 12, Line: 3, Column: 6},
},
},
[][]byte{
[]byte("hello"),
[]byte(""),
[]byte("world"),
},
},
"blank line with Windows newlines": {
"hello\r\n\r\nworld",
[]Range{
{
Start: Pos{Byte: 0, Line: 1, Column: 1},
End: Pos{Byte: 5, Line: 1, Column: 6},
},
{
Start: Pos{Byte: 7, Line: 2, Column: 1},
End: Pos{Byte: 7, Line: 2, Column: 1},
},
{
Start: Pos{Byte: 9, Line: 3, Column: 1},
End: Pos{Byte: 14, Line: 3, Column: 6},
},
},
[][]byte{
[]byte("hello"),
[]byte(""),
[]byte("world"),
},
},
"two lines with combiner and UNIX newline": {
"foo \U0001f469\U0001f3ff bar\nbaz",
[]Range{
{
Start: Pos{Byte: 0, Line: 1, Column: 1},
End: Pos{Byte: 16, Line: 1, Column: 10},
},
{
Start: Pos{Byte: 17, Line: 2, Column: 1},
End: Pos{Byte: 20, Line: 2, Column: 4},
},
},
[][]byte{
[]byte("foo \U0001f469\U0001f3ff bar"),
[]byte("baz"),
},
},
"two lines with combiner and Windows newline": {
"foo \U0001f469\U0001f3ff bar\r\nbaz",
[]Range{
{
Start: Pos{Byte: 0, Line: 1, Column: 1},
End: Pos{Byte: 16, Line: 1, Column: 10},
},
{
Start: Pos{Byte: 18, Line: 2, Column: 1},
End: Pos{Byte: 21, Line: 2, Column: 4},
},
},
[][]byte{
[]byte("foo \U0001f469\U0001f3ff bar"),
[]byte("baz"),
},
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
src := []byte(test.Input)
sc := NewRangeScanner(src, "", bufio.ScanLines)
got := make([]Range, 0)
gotToks := make([][]byte, 0)
for sc.Scan() {
got = append(got, sc.Range())
gotToks = append(gotToks, sc.Bytes())
}
if sc.Err() != nil {
t.Fatalf("unexpected error: %s", sc.Err())
}
if !reflect.DeepEqual(got, test.Want) {
t.Errorf("incorrect ranges\ngot: %swant: %s", spew.Sdump(got), spew.Sdump(test.Want))
}
if !reflect.DeepEqual(gotToks, test.WantToks) {
t.Errorf("incorrect tokens\ngot: %swant: %s", spew.Sdump(gotToks), spew.Sdump(test.WantToks))
}
})
}
}