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|
package scanner
import (
"bytes"
"fmt"
"testing"
"github.com/hashicorp/hcl/json/token"
)
var f100 = "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
type tokenPair struct {
tok token.Type
text string
}
var tokenLists = map[string][]tokenPair{
"operator": []tokenPair{
{token.LBRACK, "["},
{token.LBRACE, "{"},
{token.COMMA, ","},
{token.PERIOD, "."},
{token.RBRACK, "]"},
{token.RBRACE, "}"},
},
"bool": []tokenPair{
{token.BOOL, "true"},
{token.BOOL, "false"},
},
"string": []tokenPair{
{token.STRING, `" "`},
{token.STRING, `"a"`},
{token.STRING, `"本"`},
{token.STRING, `"${file(\"foo\")}"`},
{token.STRING, `"\a"`},
{token.STRING, `"\b"`},
{token.STRING, `"\f"`},
{token.STRING, `"\n"`},
{token.STRING, `"\r"`},
{token.STRING, `"\t"`},
{token.STRING, `"\v"`},
{token.STRING, `"\""`},
{token.STRING, `"\000"`},
{token.STRING, `"\777"`},
{token.STRING, `"\x00"`},
{token.STRING, `"\xff"`},
{token.STRING, `"\u0000"`},
{token.STRING, `"\ufA16"`},
{token.STRING, `"\U00000000"`},
{token.STRING, `"\U0000ffAB"`},
{token.STRING, `"` + f100 + `"`},
},
"number": []tokenPair{
{token.NUMBER, "0"},
{token.NUMBER, "1"},
{token.NUMBER, "9"},
{token.NUMBER, "42"},
{token.NUMBER, "1234567890"},
{token.NUMBER, "-0"},
{token.NUMBER, "-1"},
{token.NUMBER, "-9"},
{token.NUMBER, "-42"},
{token.NUMBER, "-1234567890"},
},
"float": []tokenPair{
{token.FLOAT, "0."},
{token.FLOAT, "1."},
{token.FLOAT, "42."},
{token.FLOAT, "01234567890."},
{token.FLOAT, ".0"},
{token.FLOAT, ".1"},
{token.FLOAT, ".42"},
{token.FLOAT, ".0123456789"},
{token.FLOAT, "0.0"},
{token.FLOAT, "1.0"},
{token.FLOAT, "42.0"},
{token.FLOAT, "01234567890.0"},
{token.FLOAT, "0e0"},
{token.FLOAT, "1e0"},
{token.FLOAT, "42e0"},
{token.FLOAT, "01234567890e0"},
{token.FLOAT, "0E0"},
{token.FLOAT, "1E0"},
{token.FLOAT, "42E0"},
{token.FLOAT, "01234567890E0"},
{token.FLOAT, "0e+10"},
{token.FLOAT, "1e-10"},
{token.FLOAT, "42e+10"},
{token.FLOAT, "01234567890e-10"},
{token.FLOAT, "0E+10"},
{token.FLOAT, "1E-10"},
{token.FLOAT, "42E+10"},
{token.FLOAT, "01234567890E-10"},
{token.FLOAT, "01.8e0"},
{token.FLOAT, "1.4e0"},
{token.FLOAT, "42.2e0"},
{token.FLOAT, "01234567890.12e0"},
{token.FLOAT, "0.E0"},
{token.FLOAT, "1.12E0"},
{token.FLOAT, "42.123E0"},
{token.FLOAT, "01234567890.213E0"},
{token.FLOAT, "0.2e+10"},
{token.FLOAT, "1.2e-10"},
{token.FLOAT, "42.54e+10"},
{token.FLOAT, "01234567890.98e-10"},
{token.FLOAT, "0.1E+10"},
{token.FLOAT, "1.1E-10"},
{token.FLOAT, "42.1E+10"},
{token.FLOAT, "01234567890.1E-10"},
{token.FLOAT, "-0.0"},
{token.FLOAT, "-1.0"},
{token.FLOAT, "-42.0"},
{token.FLOAT, "-01234567890.0"},
{token.FLOAT, "-0e0"},
{token.FLOAT, "-1e0"},
{token.FLOAT, "-42e0"},
{token.FLOAT, "-01234567890e0"},
{token.FLOAT, "-0E0"},
{token.FLOAT, "-1E0"},
{token.FLOAT, "-42E0"},
{token.FLOAT, "-01234567890E0"},
{token.FLOAT, "-0e+10"},
{token.FLOAT, "-1e-10"},
{token.FLOAT, "-42e+10"},
{token.FLOAT, "-01234567890e-10"},
{token.FLOAT, "-0E+10"},
{token.FLOAT, "-1E-10"},
{token.FLOAT, "-42E+10"},
{token.FLOAT, "-01234567890E-10"},
{token.FLOAT, "-01.8e0"},
{token.FLOAT, "-1.4e0"},
{token.FLOAT, "-42.2e0"},
{token.FLOAT, "-01234567890.12e0"},
{token.FLOAT, "-0.E0"},
{token.FLOAT, "-1.12E0"},
{token.FLOAT, "-42.123E0"},
{token.FLOAT, "-01234567890.213E0"},
{token.FLOAT, "-0.2e+10"},
{token.FLOAT, "-1.2e-10"},
{token.FLOAT, "-42.54e+10"},
{token.FLOAT, "-01234567890.98e-10"},
{token.FLOAT, "-0.1E+10"},
{token.FLOAT, "-1.1E-10"},
{token.FLOAT, "-42.1E+10"},
{token.FLOAT, "-01234567890.1E-10"},
},
}
var orderedTokenLists = []string{
"comment",
"operator",
"bool",
"string",
"number",
"float",
}
func TestPosition(t *testing.T) {
// create artifical source code
buf := new(bytes.Buffer)
for _, listName := range orderedTokenLists {
for _, ident := range tokenLists[listName] {
fmt.Fprintf(buf, "\t\t\t\t%s\n", ident.text)
}
}
s := New(buf.Bytes())
pos := token.Pos{"", 4, 1, 5}
s.Scan()
for _, listName := range orderedTokenLists {
for _, k := range tokenLists[listName] {
curPos := s.tokPos
// fmt.Printf("[%q] s = %+v:%+v\n", k.text, curPos.Offset, curPos.Column)
if curPos.Offset != pos.Offset {
t.Fatalf("offset = %d, want %d for %q", curPos.Offset, pos.Offset, k.text)
}
if curPos.Line != pos.Line {
t.Fatalf("line = %d, want %d for %q", curPos.Line, pos.Line, k.text)
}
if curPos.Column != pos.Column {
t.Fatalf("column = %d, want %d for %q", curPos.Column, pos.Column, k.text)
}
pos.Offset += 4 + len(k.text) + 1 // 4 tabs + token bytes + newline
pos.Line += countNewlines(k.text) + 1 // each token is on a new line
s.Error = func(pos token.Pos, msg string) {
t.Errorf("error %q for %q", msg, k.text)
}
s.Scan()
}
}
// make sure there were no token-internal errors reported by scanner
if s.ErrorCount != 0 {
t.Errorf("%d errors", s.ErrorCount)
}
}
func TestComment(t *testing.T) {
testTokenList(t, tokenLists["comment"])
}
func TestOperator(t *testing.T) {
testTokenList(t, tokenLists["operator"])
}
func TestBool(t *testing.T) {
testTokenList(t, tokenLists["bool"])
}
func TestIdent(t *testing.T) {
testTokenList(t, tokenLists["ident"])
}
func TestString(t *testing.T) {
testTokenList(t, tokenLists["string"])
}
func TestNumber(t *testing.T) {
testTokenList(t, tokenLists["number"])
}
func TestFloat(t *testing.T) {
testTokenList(t, tokenLists["float"])
}
func TestRealExample(t *testing.T) {
complexReal := `
{
"variable": {
"foo": {
"default": "bar",
"description": "bar",
"depends_on": ["something"]
}
}
}`
literals := []struct {
tokenType token.Type
literal string
}{
{token.LBRACE, `{`},
{token.STRING, `"variable"`},
{token.COLON, `:`},
{token.LBRACE, `{`},
{token.STRING, `"foo"`},
{token.COLON, `:`},
{token.LBRACE, `{`},
{token.STRING, `"default"`},
{token.COLON, `:`},
{token.STRING, `"bar"`},
{token.COMMA, `,`},
{token.STRING, `"description"`},
{token.COLON, `:`},
{token.STRING, `"bar"`},
{token.COMMA, `,`},
{token.STRING, `"depends_on"`},
{token.COLON, `:`},
{token.LBRACK, `[`},
{token.STRING, `"something"`},
{token.RBRACK, `]`},
{token.RBRACE, `}`},
{token.RBRACE, `}`},
{token.RBRACE, `}`},
{token.EOF, ``},
}
s := New([]byte(complexReal))
for _, l := range literals {
tok := s.Scan()
if l.tokenType != tok.Type {
t.Errorf("got: %s want %s for %s\n", tok, l.tokenType, tok.String())
}
if l.literal != tok.Text {
t.Errorf("got: %s want %s\n", tok, l.literal)
}
}
}
func TestError(t *testing.T) {
testError(t, "\x80", "1:1", "illegal UTF-8 encoding", token.ILLEGAL)
testError(t, "\xff", "1:1", "illegal UTF-8 encoding", token.ILLEGAL)
testError(t, `"ab`+"\x80", "1:4", "illegal UTF-8 encoding", token.STRING)
testError(t, `"abc`+"\xff", "1:5", "illegal UTF-8 encoding", token.STRING)
testError(t, `01238`, "1:7", "numbers cannot start with 0", token.NUMBER)
testError(t, `01238123`, "1:10", "numbers cannot start with 0", token.NUMBER)
testError(t, `'aa'`, "1:1", "illegal char: '", token.ILLEGAL)
testError(t, `"`, "1:2", "literal not terminated", token.STRING)
testError(t, `"abc`, "1:5", "literal not terminated", token.STRING)
testError(t, `"abc`+"\n", "1:5", "literal not terminated", token.STRING)
}
func testError(t *testing.T, src, pos, msg string, tok token.Type) {
s := New([]byte(src))
errorCalled := false
s.Error = func(p token.Pos, m string) {
if !errorCalled {
if pos != p.String() {
t.Errorf("pos = %q, want %q for %q", p, pos, src)
}
if m != msg {
t.Errorf("msg = %q, want %q for %q", m, msg, src)
}
errorCalled = true
}
}
tk := s.Scan()
if tk.Type != tok {
t.Errorf("tok = %s, want %s for %q", tk, tok, src)
}
if !errorCalled {
t.Errorf("error handler not called for %q", src)
}
if s.ErrorCount == 0 {
t.Errorf("count = %d, want > 0 for %q", s.ErrorCount, src)
}
}
func testTokenList(t *testing.T, tokenList []tokenPair) {
// create artifical source code
buf := new(bytes.Buffer)
for _, ident := range tokenList {
fmt.Fprintf(buf, "%s\n", ident.text)
}
s := New(buf.Bytes())
for _, ident := range tokenList {
tok := s.Scan()
if tok.Type != ident.tok {
t.Errorf("tok = %q want %q for %q\n", tok, ident.tok, ident.text)
}
if tok.Text != ident.text {
t.Errorf("text = %q want %q", tok.String(), ident.text)
}
}
}
func countNewlines(s string) int {
n := 0
for _, ch := range s {
if ch == '\n' {
n++
}
}
return n
}
|
