dex/vendor/github.com/lib/pq/encode_test.go

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2016-04-09 00:26:29 +05:30
package pq
import (
"github.com/lib/pq/oid"
"bytes"
"fmt"
"testing"
"time"
)
func TestScanTimestamp(t *testing.T) {
var nt NullTime
tn := time.Now()
nt.Scan(tn)
if !nt.Valid {
t.Errorf("Expected Valid=false")
}
if nt.Time != tn {
t.Errorf("Time value mismatch")
}
}
func TestScanNilTimestamp(t *testing.T) {
var nt NullTime
nt.Scan(nil)
if nt.Valid {
t.Errorf("Expected Valid=false")
}
}
var timeTests = []struct {
str string
timeval time.Time
}{
{"22001-02-03", time.Date(22001, time.February, 3, 0, 0, 0, 0, time.FixedZone("", 0))},
{"2001-02-03", time.Date(2001, time.February, 3, 0, 0, 0, 0, time.FixedZone("", 0))},
{"2001-02-03 04:05:06", time.Date(2001, time.February, 3, 4, 5, 6, 0, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.000001", time.Date(2001, time.February, 3, 4, 5, 6, 1000, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.00001", time.Date(2001, time.February, 3, 4, 5, 6, 10000, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.0001", time.Date(2001, time.February, 3, 4, 5, 6, 100000, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.001", time.Date(2001, time.February, 3, 4, 5, 6, 1000000, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.01", time.Date(2001, time.February, 3, 4, 5, 6, 10000000, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.1", time.Date(2001, time.February, 3, 4, 5, 6, 100000000, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.12", time.Date(2001, time.February, 3, 4, 5, 6, 120000000, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.123", time.Date(2001, time.February, 3, 4, 5, 6, 123000000, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.1234", time.Date(2001, time.February, 3, 4, 5, 6, 123400000, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.12345", time.Date(2001, time.February, 3, 4, 5, 6, 123450000, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.123456", time.Date(2001, time.February, 3, 4, 5, 6, 123456000, time.FixedZone("", 0))},
{"2001-02-03 04:05:06.123-07", time.Date(2001, time.February, 3, 4, 5, 6, 123000000,
time.FixedZone("", -7*60*60))},
{"2001-02-03 04:05:06-07", time.Date(2001, time.February, 3, 4, 5, 6, 0,
time.FixedZone("", -7*60*60))},
{"2001-02-03 04:05:06-07:42", time.Date(2001, time.February, 3, 4, 5, 6, 0,
time.FixedZone("", -(7*60*60+42*60)))},
{"2001-02-03 04:05:06-07:30:09", time.Date(2001, time.February, 3, 4, 5, 6, 0,
time.FixedZone("", -(7*60*60+30*60+9)))},
{"2001-02-03 04:05:06+07", time.Date(2001, time.February, 3, 4, 5, 6, 0,
time.FixedZone("", 7*60*60))},
//{"10000-02-03 04:05:06 BC", time.Date(-10000, time.February, 3, 4, 5, 6, 0, time.FixedZone("", 0))},
{"0010-02-03 04:05:06 BC", time.Date(-10, time.February, 3, 4, 5, 6, 0, time.FixedZone("", 0))},
{"0010-02-03 04:05:06.123 BC", time.Date(-10, time.February, 3, 4, 5, 6, 123000000, time.FixedZone("", 0))},
{"0010-02-03 04:05:06.123-07 BC", time.Date(-10, time.February, 3, 4, 5, 6, 123000000,
time.FixedZone("", -7*60*60))},
}
// Helper function for the two tests below
func tryParse(str string) (t time.Time, err error) {
defer func() {
if p := recover(); p != nil {
err = fmt.Errorf("%v", p)
return
}
}()
t = parseTs(nil, str)
return
}
// Test that parsing the string results in the expected value.
func TestParseTs(t *testing.T) {
for i, tt := range timeTests {
val, err := tryParse(tt.str)
if err != nil {
t.Errorf("%d: got error: %v", i, err)
} else if val.String() != tt.timeval.String() {
t.Errorf("%d: expected to parse %q into %q; got %q",
i, tt.str, tt.timeval, val)
}
}
}
// Now test that sending the value into the database and parsing it back
// returns the same time.Time value.
func TestEncodeAndParseTs(t *testing.T) {
db, err := openTestConnConninfo("timezone='Etc/UTC'")
if err != nil {
t.Fatal(err)
}
defer db.Close()
for i, tt := range timeTests {
var dbstr string
err = db.QueryRow("SELECT ($1::timestamptz)::text", tt.timeval).Scan(&dbstr)
if err != nil {
t.Errorf("%d: could not send value %q to the database: %s", i, tt.timeval, err)
continue
}
val, err := tryParse(dbstr)
if err != nil {
t.Errorf("%d: could not parse value %q: %s", i, dbstr, err)
continue
}
val = val.In(tt.timeval.Location())
if val.String() != tt.timeval.String() {
t.Errorf("%d: expected to parse %q into %q; got %q", i, dbstr, tt.timeval, val)
}
}
}
var formatTimeTests = []struct {
time time.Time
expected string
}{
{time.Time{}, "0001-01-01T00:00:00Z"},
{time.Date(2001, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 0)), "2001-02-03T04:05:06.123456789Z"},
{time.Date(2001, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 2*60*60)), "2001-02-03T04:05:06.123456789+02:00"},
{time.Date(2001, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", -6*60*60)), "2001-02-03T04:05:06.123456789-06:00"},
{time.Date(1, time.January, 1, 0, 0, 0, 0, time.FixedZone("", 19*60+32)), "0001-01-01T00:00:00+00:19:32"},
{time.Date(2001, time.February, 3, 4, 5, 6, 0, time.FixedZone("", -(7*60*60+30*60+9))), "2001-02-03T04:05:06-07:30:09"},
}
func TestFormatTs(t *testing.T) {
for i, tt := range formatTimeTests {
val := string(formatTs(tt.time))
if val != tt.expected {
t.Errorf("%d: incorrect time format %q, want %q", i, val, tt.expected)
}
}
}
func TestTimestampWithTimeZone(t *testing.T) {
db := openTestConn(t)
defer db.Close()
tx, err := db.Begin()
if err != nil {
t.Fatal(err)
}
defer tx.Rollback()
// try several different locations, all included in Go's zoneinfo.zip
for _, locName := range []string{
"UTC",
"America/Chicago",
"America/New_York",
"Australia/Darwin",
"Australia/Perth",
} {
loc, err := time.LoadLocation(locName)
if err != nil {
t.Logf("Could not load time zone %s - skipping", locName)
continue
}
// Postgres timestamps have a resolution of 1 microsecond, so don't
// use the full range of the Nanosecond argument
refTime := time.Date(2012, 11, 6, 10, 23, 42, 123456000, loc)
for _, pgTimeZone := range []string{"US/Eastern", "Australia/Darwin"} {
// Switch Postgres's timezone to test different output timestamp formats
_, err = tx.Exec(fmt.Sprintf("set time zone '%s'", pgTimeZone))
if err != nil {
t.Fatal(err)
}
var gotTime time.Time
row := tx.QueryRow("select $1::timestamp with time zone", refTime)
err = row.Scan(&gotTime)
if err != nil {
t.Fatal(err)
}
if !refTime.Equal(gotTime) {
t.Errorf("timestamps not equal: %s != %s", refTime, gotTime)
}
// check that the time zone is set correctly based on TimeZone
pgLoc, err := time.LoadLocation(pgTimeZone)
if err != nil {
t.Logf("Could not load time zone %s - skipping", pgLoc)
continue
}
translated := refTime.In(pgLoc)
if translated.String() != gotTime.String() {
t.Errorf("timestamps not equal: %s != %s", translated, gotTime)
}
}
}
}
func TestTimestampWithOutTimezone(t *testing.T) {
db := openTestConn(t)
defer db.Close()
test := func(ts, pgts string) {
r, err := db.Query("SELECT $1::timestamp", pgts)
if err != nil {
t.Fatalf("Could not run query: %v", err)
}
n := r.Next()
if n != true {
t.Fatal("Expected at least one row")
}
var result time.Time
err = r.Scan(&result)
if err != nil {
t.Fatalf("Did not expect error scanning row: %v", err)
}
expected, err := time.Parse(time.RFC3339, ts)
if err != nil {
t.Fatalf("Could not parse test time literal: %v", err)
}
if !result.Equal(expected) {
t.Fatalf("Expected time to match %v: got mismatch %v",
expected, result)
}
n = r.Next()
if n != false {
t.Fatal("Expected only one row")
}
}
test("2000-01-01T00:00:00Z", "2000-01-01T00:00:00")
// Test higher precision time
test("2013-01-04T20:14:58.80033Z", "2013-01-04 20:14:58.80033")
}
func TestStringWithNul(t *testing.T) {
db := openTestConn(t)
defer db.Close()
hello0world := string("hello\x00world")
_, err := db.Query("SELECT $1::text", &hello0world)
if err == nil {
t.Fatal("Postgres accepts a string with nul in it; " +
"injection attacks may be plausible")
}
}
func TestByteaToText(t *testing.T) {
db := openTestConn(t)
defer db.Close()
b := []byte("hello world")
row := db.QueryRow("SELECT $1::text", b)
var result []byte
err := row.Scan(&result)
if err != nil {
t.Fatal(err)
}
if string(result) != string(b) {
t.Fatalf("expected %v but got %v", b, result)
}
}
func TestTextToBytea(t *testing.T) {
db := openTestConn(t)
defer db.Close()
b := "hello world"
row := db.QueryRow("SELECT $1::bytea", b)
var result []byte
err := row.Scan(&result)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(result, []byte(b)) {
t.Fatalf("expected %v but got %v", b, result)
}
}
func TestByteaOutputFormatEncoding(t *testing.T) {
input := []byte("\\x\x00\x01\x02\xFF\xFEabcdefg0123")
want := []byte("\\x5c78000102fffe6162636465666730313233")
got := encode(&parameterStatus{serverVersion: 90000}, input, oid.T_bytea)
if !bytes.Equal(want, got) {
t.Errorf("invalid hex bytea output, got %v but expected %v", got, want)
}
want = []byte("\\\\x\\000\\001\\002\\377\\376abcdefg0123")
got = encode(&parameterStatus{serverVersion: 84000}, input, oid.T_bytea)
if !bytes.Equal(want, got) {
t.Errorf("invalid escape bytea output, got %v but expected %v", got, want)
}
}
func TestByteaOutputFormats(t *testing.T) {
db := openTestConn(t)
defer db.Close()
if getServerVersion(t, db) < 90000 {
// skip
return
}
testByteaOutputFormat := func(f string) {
expectedData := []byte("\x5c\x78\x00\xff\x61\x62\x63\x01\x08")
sqlQuery := "SELECT decode('5c7800ff6162630108', 'hex')"
var data []byte
// use a txn to avoid relying on getting the same connection
txn, err := db.Begin()
if err != nil {
t.Fatal(err)
}
defer txn.Rollback()
_, err = txn.Exec("SET LOCAL bytea_output TO " + f)
if err != nil {
t.Fatal(err)
}
// use Query; QueryRow would hide the actual error
rows, err := txn.Query(sqlQuery)
if err != nil {
t.Fatal(err)
}
if !rows.Next() {
if rows.Err() != nil {
t.Fatal(rows.Err())
}
t.Fatal("shouldn't happen")
}
err = rows.Scan(&data)
if err != nil {
t.Fatal(err)
}
err = rows.Close()
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(data, expectedData) {
t.Errorf("unexpected bytea value %v for format %s; expected %v", data, f, expectedData)
}
}
testByteaOutputFormat("hex")
testByteaOutputFormat("escape")
}
func TestAppendEncodedText(t *testing.T) {
var buf []byte
buf = appendEncodedText(&parameterStatus{serverVersion: 90000}, buf, int64(10))
buf = append(buf, '\t')
buf = appendEncodedText(&parameterStatus{serverVersion: 90000}, buf, float32(42.0000000001))
buf = append(buf, '\t')
buf = appendEncodedText(&parameterStatus{serverVersion: 90000}, buf, 42.0000000001)
buf = append(buf, '\t')
buf = appendEncodedText(&parameterStatus{serverVersion: 90000}, buf, "hello\tworld")
buf = append(buf, '\t')
buf = appendEncodedText(&parameterStatus{serverVersion: 90000}, buf, []byte{0, 128, 255})
if string(buf) != "10\t42\t42.0000000001\thello\\tworld\t\\\\x0080ff" {
t.Fatal(string(buf))
}
}
func TestAppendEscapedText(t *testing.T) {
if esc := appendEscapedText(nil, "hallo\tescape"); string(esc) != "hallo\\tescape" {
t.Fatal(string(esc))
}
if esc := appendEscapedText(nil, "hallo\\tescape\n"); string(esc) != "hallo\\\\tescape\\n" {
t.Fatal(string(esc))
}
if esc := appendEscapedText(nil, "\n\r\t\f"); string(esc) != "\\n\\r\\t\f" {
t.Fatal(string(esc))
}
}
func TestAppendEscapedTextExistingBuffer(t *testing.T) {
var buf []byte
buf = []byte("123\t")
if esc := appendEscapedText(buf, "hallo\tescape"); string(esc) != "123\thallo\\tescape" {
t.Fatal(string(esc))
}
buf = []byte("123\t")
if esc := appendEscapedText(buf, "hallo\\tescape\n"); string(esc) != "123\thallo\\\\tescape\\n" {
t.Fatal(string(esc))
}
buf = []byte("123\t")
if esc := appendEscapedText(buf, "\n\r\t\f"); string(esc) != "123\t\\n\\r\\t\f" {
t.Fatal(string(esc))
}
}
func BenchmarkAppendEscapedText(b *testing.B) {
longString := ""
for i := 0; i < 100; i++ {
longString += "123456789\n"
}
for i := 0; i < b.N; i++ {
appendEscapedText(nil, longString)
}
}
func BenchmarkAppendEscapedTextNoEscape(b *testing.B) {
longString := ""
for i := 0; i < 100; i++ {
longString += "1234567890"
}
for i := 0; i < b.N; i++ {
appendEscapedText(nil, longString)
}
}