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|
package caddyfile
import (
"strings"
"testing"
)
type lexerTestCase struct {
input string
expected []Token
}
func TestLexer(t *testing.T) {
testCases := []lexerTestCase{
{
input: `host:123`,
expected: []Token{
{Line: 1, Text: "host:123"},
},
},
{
input: `host:123
directive`,
expected: []Token{
{Line: 1, Text: "host:123"},
{Line: 3, Text: "directive"},
},
},
{
input: `host:123 {
directive
}`,
expected: []Token{
{Line: 1, Text: "host:123"},
{Line: 1, Text: "{"},
{Line: 2, Text: "directive"},
{Line: 3, Text: "}"},
},
},
{
input: `host:123 { directive }`,
expected: []Token{
{Line: 1, Text: "host:123"},
{Line: 1, Text: "{"},
{Line: 1, Text: "directive"},
{Line: 1, Text: "}"},
},
},
{
input: `host:123 {
#comment
directive
# comment
foobar # another comment
}`,
expected: []Token{
{Line: 1, Text: "host:123"},
{Line: 1, Text: "{"},
{Line: 3, Text: "directive"},
{Line: 5, Text: "foobar"},
{Line: 6, Text: "}"},
},
},
{
input: `a "quoted value" b
foobar`,
expected: []Token{
{Line: 1, Text: "a"},
{Line: 1, Text: "quoted value"},
{Line: 1, Text: "b"},
{Line: 2, Text: "foobar"},
},
},
{
input: `A "quoted \"value\" inside" B`,
expected: []Token{
{Line: 1, Text: "A"},
{Line: 1, Text: `quoted "value" inside`},
{Line: 1, Text: "B"},
},
},
{
input: `"don't\escape"`,
expected: []Token{
{Line: 1, Text: `don't\escape`},
},
},
{
input: `"don't\\escape"`,
expected: []Token{
{Line: 1, Text: `don't\\escape`},
},
},
{
input: `A "quoted value with line
break inside" {
foobar
}`,
expected: []Token{
{Line: 1, Text: "A"},
{Line: 1, Text: "quoted value with line\n\t\t\t\t\tbreak inside"},
{Line: 2, Text: "{"},
{Line: 3, Text: "foobar"},
{Line: 4, Text: "}"},
},
},
{
input: `"C:\php\php-cgi.exe"`,
expected: []Token{
{Line: 1, Text: `C:\php\php-cgi.exe`},
},
},
{
input: `empty "" string`,
expected: []Token{
{Line: 1, Text: `empty`},
{Line: 1, Text: ``},
{Line: 1, Text: `string`},
},
},
{
input: "skip those\r\nCR characters",
expected: []Token{
{Line: 1, Text: "skip"},
{Line: 1, Text: "those"},
{Line: 2, Text: "CR"},
{Line: 2, Text: "characters"},
},
},
}
for i, testCase := range testCases {
actual := tokenize(testCase.input)
lexerCompare(t, i, testCase.expected, actual)
}
}
func tokenize(input string) (tokens []Token) {
l := lexer{}
l.load(strings.NewReader(input))
for l.next() {
tokens = append(tokens, l.token)
}
return
}
func lexerCompare(t *testing.T, n int, expected, actual []Token) {
if len(expected) != len(actual) {
t.Errorf("Test case %d: expected %d token(s) but got %d", n, len(expected), len(actual))
}
for i := 0; i < len(actual) && i < len(expected); i++ {
if actual[i].Line != expected[i].Line {
t.Errorf("Test case %d token %d ('%s'): expected line %d but was line %d",
n, i, expected[i].Text, expected[i].Line, actual[i].Line)
break
}
if actual[i].Text != expected[i].Text {
t.Errorf("Test case %d token %d: expected text '%s' but was '%s'",
n, i, expected[i].Text, actual[i].Text)
break
}
}
}
|
