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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package http

import (
        "testing"
)

type lexTest struct {
        Raw    string
        Parsed int // # of parsed characters
        Result []string
}

var lexTests = []lexTest{
        {
                Raw:    `"abc"def,:ghi`,
                Parsed: 13,
                Result: []string{"abcdef", "ghi"},
        },
        // My understanding of the RFC is that escape sequences outside of
        // quotes are not interpreted?
        {
                Raw:    `"\t"\t"\t"`,
                Parsed: 10,
                Result: []string{"\t", "t\t"},
        },
        {
                Raw:    `"\yab"\r\n`,
                Parsed: 10,
                Result: []string{"?ab", "r", "n"},
        },
        {
                Raw:    "ab\f",
                Parsed: 3,
                Result: []string{"ab?"},
        },
        {
                Raw:    "\"ab \" c,de f, gh, ij\n\t\r",
                Parsed: 23,
                Result: []string{"ab ", "c", "de", "f", "gh", "ij"},
        },
}

func min(x, y int) int {
        if x <= y {
                return x
        }
        return y
}

func TestSplitFieldValue(t *testing.T) {
        for k, l := range lexTests {
                parsed, result := httpSplitFieldValue(l.Raw)
                if parsed != l.Parsed {
                        t.Errorf("#%d: Parsed %d, expected %d", k, parsed, l.Parsed)
                }
                if len(result) != len(l.Result) {
                        t.Errorf("#%d: Result len  %d, expected %d", k, len(result), len(l.Result))
                }
                for i := 0; i < min(len(result), len(l.Result)); i++ {
                        if result[i] != l.Result[i] {
                                t.Errorf("#%d: %d-th entry mismatch. Have {%s}, expect {%s}",
                                        k, i, result[i], l.Result[i])
                        }
                }
        }
}