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fresh_test.go
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fresh_test.go
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package fresh
import (
"net/http"
"net/http/httptest"
"testing"
"github.com/stretchr/testify/assert"
)
func createRequestHeader(modifiedSince, noneMatch, cacheControl string) http.Header {
req := httptest.NewRequest("GET", "/users/me", nil)
header := req.Header
if modifiedSince != "" {
header.Set(HeaderIfModifiedSince, modifiedSince)
}
if noneMatch != "" {
header.Set(HeaderIfNoneMatch, noneMatch)
}
if cacheControl != "" {
header.Set(HeaderCacheControl, cacheControl)
}
return header
}
func createResponseHeader(lastModified, eTag string) http.Header {
resp := httptest.NewRecorder()
header := resp.Header()
if lastModified != "" {
header.Set(HeaderLastModified, lastModified)
}
if eTag != "" {
header.Set(HeaderETag, eTag)
}
return header
}
func TestFresh(t *testing.T) {
assert := assert.New(t)
// when a non-conditional GET is performed
reqHeader := createRequestHeader("", "", "")
resHeader := createResponseHeader("", "")
assert.False(Fresh(reqHeader, resHeader))
// when ETags match
reqHeader = createRequestHeader("", "\"foo\"", "")
resHeader = createResponseHeader("", "\"foo\"")
assert.True(Fresh(reqHeader, resHeader))
reqHeader = createRequestHeader("", "W/\"foo\"", "")
resHeader = createResponseHeader("", "\"foo\"")
assert.True(Fresh(reqHeader, resHeader))
reqHeader = createRequestHeader("", "\"foo\"", "")
resHeader = createResponseHeader("", "W/\"foo\"")
assert.True(Fresh(reqHeader, resHeader))
// when ETags mismatch
reqHeader = createRequestHeader("", "\"foo\"", "")
resHeader = createResponseHeader("", "\"bar\"")
assert.False(Fresh(reqHeader, resHeader))
// when at least one matches
reqHeader = createRequestHeader("", " \"bar\" , \"foo\"", "")
resHeader = createResponseHeader("", "\"foo\"")
assert.True(Fresh(reqHeader, resHeader))
// when eTag is missing
reqHeader = createRequestHeader("", "\"foo\"", "")
resHeader = createResponseHeader("", "")
assert.False(Fresh(reqHeader, resHeader))
// when ETag is weak
reqHeader = createRequestHeader("", "W/\"foo\"", "")
resHeader = createResponseHeader("", "W/\"foo\"")
assert.True(Fresh(reqHeader, resHeader))
resHeader = createResponseHeader("", "\"foo\"")
assert.True(Fresh(reqHeader, resHeader))
// when ETag is strong
reqHeader = createRequestHeader("", "\"foo\"", "")
resHeader = createResponseHeader("", "\"foo\"")
assert.True(Fresh(reqHeader, resHeader))
// weak eTag
resHeader = createResponseHeader("", "W/\"foo\"")
assert.True(Fresh(reqHeader, resHeader))
// when * is given
reqHeader = createRequestHeader("", "*", "")
resHeader = createResponseHeader("", "\"foo\"")
assert.True(Fresh(reqHeader, resHeader))
reqHeader = createRequestHeader("", "*, \"bar\"", "")
assert.False(Fresh(reqHeader, resHeader))
// when modified since the date
reqHeader = createRequestHeader("Sat, 01 Jan 2000 00:00:00 GMT", "", "")
resHeader = createResponseHeader("Sat, 01 Jan 2000 01:00:00 GMT", "")
assert.False(Fresh(reqHeader, resHeader))
// when unmodified since the date
reqHeader = createRequestHeader("Sat, 01 Jan 2000 01:00:00 GMT", "", "")
resHeader = createResponseHeader("Sat, 01 Jan 2000 00:00:00 GMT", "")
assert.True(Fresh(reqHeader, resHeader))
// when Last-Modified is missing
reqHeader = createRequestHeader("Sat, 01 Jan 2000 01:00:00 GMT", "", "")
resHeader = createResponseHeader("", "")
assert.False(Fresh(reqHeader, resHeader))
// with invalid If-Modified-Since date
reqHeader = createRequestHeader("foo", "", "")
resHeader = createResponseHeader("Sat, 01 Jan 2000 00:00:00 GMT", "")
assert.False(Fresh(reqHeader, resHeader))
// with invalid Last-Modified date
reqHeader = createRequestHeader("Sat, 01 Jan 2000 00:00:00 GMT", "", "")
resHeader = createResponseHeader("foo", "")
assert.False(Fresh(reqHeader, resHeader))
// when requested with If-Modified-Since and If-None-Match
// both match
reqHeader = createRequestHeader("Sat, 01 Jan 2000 00:00:00 GMT", "\"foo\"", "")
resHeader = createResponseHeader("Sat, 01 Jan 2000 00:00:00 GMT", "\"foo\"")
assert.True(Fresh(reqHeader, resHeader))
// when only ETag matches
reqHeader = createRequestHeader("Sat, 01 Jan 2000 00:00:00 GMT", "\"foo\"", "")
resHeader = createResponseHeader("Sat, 01 Jan 2000 01:00:00 GMT", "\"foo\"")
assert.False(Fresh(reqHeader, resHeader))
// when only Last-Modified matches
reqHeader = createRequestHeader("Sat, 01 Jan 2000 00:00:00 GMT", "\"foo\"", "")
resHeader = createResponseHeader("Sat, 01 Jan 2000 00:00:00 GMT", "\"bar\"")
assert.False(Fresh(reqHeader, resHeader))
// when none match
reqHeader = createRequestHeader("Sat, 01 Jan 2000 00:00:00 GMT", "\"foo\"", "")
resHeader = createResponseHeader("Sat, 01 Jan 2000 01:00:00 GMT", "\"bar\"")
assert.False(Fresh(reqHeader, resHeader))
// when requested with Cache-Control: no-cache
reqHeader = createRequestHeader("", "", "no-cache")
resHeader = createResponseHeader("", "")
assert.False(Fresh(reqHeader, resHeader))
// when ETags match
reqHeader = createRequestHeader("", "\"foo\"", "no-cache")
resHeader = createResponseHeader("", "\"foo\"")
assert.False(Fresh(reqHeader, resHeader))
// when unmodified since the date
reqHeader = createRequestHeader("Sat, 01 Jan 2000 00:00:00 GMT", "", "no-cache")
resHeader = createResponseHeader("Sat, 01 Jan 2000 00:00:00 GMT", "\"foo\"")
assert.False(Fresh(reqHeader, resHeader))
}
func BenchmarkFresh(b *testing.B) {
b.ResetTimer()
reqHeader := createRequestHeader("Sat, 01 Jan 2000 00:00:00 GMT", "\"foo\"", "")
resHeader := createResponseHeader("Sat, 01 Jan 2000 00:00:00 GMT", "\"foo\"")
for i := 0; i < b.N; i++ {
Fresh(reqHeader, resHeader)
}
}