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package encode
import (
"net/http"
"sync"
"testing"
)
func BenchmarkOpenResponseWriter(b *testing.B) {
enc := new(Encode)
for n := 0; n < b.N; n++ {
enc.openResponseWriter("test", nil)
}
}
func TestPreferOrder(t *testing.T) {
testCases := []struct {
name string
accept string
prefer []string
expected []string
}{
{
name: "PreferOrder(): 4 accept, 3 prefer",
accept: "deflate, gzip, br, zstd",
prefer: []string{"zstd", "br", "gzip"},
expected: []string{"zstd", "br", "gzip", "deflate"},
},
{
name: "PreferOrder(): 2 accept, 3 prefer",
accept: "deflate, zstd",
prefer: []string{"zstd", "br", "gzip"},
expected: []string{"zstd", "deflate"},
},
{
name: "PreferOrder(): 2 accept (1 empty), 3 prefer",
accept: "gzip,,zstd",
prefer: []string{"zstd", "br", "gzip"},
expected: []string{"zstd", "gzip", ""},
},
{
name: "PreferOrder(): 1 accept, 2 prefer",
accept: "gzip",
prefer: []string{"zstd", "gzip"},
expected: []string{"gzip"},
},
{
name: "PreferOrder(): 4 accept (1 duplicate), 1 prefer",
accept: "deflate, gzip, br, br",
prefer: []string{"br"},
expected: []string{"br", "br", "deflate", "gzip"},
},
{
name: "PreferOrder(): empty accept, 0 prefer",
accept: "",
prefer: []string{},
expected: []string{},
},
{
name: "PreferOrder(): empty accept, 1 prefer",
accept: "",
prefer: []string{"gzip"},
expected: []string{},
},
{
name: "PreferOrder(): with q-factor",
accept: "deflate;q=0.8, gzip;q=0.4, br;q=0.2, zstd",
prefer: []string{"gzip"},
expected: []string{"zstd", "deflate", "gzip", "br"},
},
{
name: "PreferOrder(): with q-factor, no prefer",
accept: "deflate;q=0.8, gzip;q=0.4, br;q=0.2, zstd",
prefer: []string{},
expected: []string{"zstd", "deflate", "gzip", "br"},
},
{
name: "PreferOrder(): q-factor=0 filtered out",
accept: "deflate;q=0.1, gzip;q=0.4, br;q=0.5, zstd;q=0",
prefer: []string{"gzip"},
expected: []string{"br", "gzip", "deflate"},
},
{
name: "PreferOrder(): q-factor=0 filtered out, no prefer",
accept: "deflate;q=0.1, gzip;q=0.4, br;q=0.5, zstd;q=0",
prefer: []string{},
expected: []string{"br", "gzip", "deflate"},
},
{
name: "PreferOrder(): with invalid q-factor",
accept: "br, deflate, gzip;q=2, zstd;q=0.1",
prefer: []string{"zstd", "gzip"},
expected: []string{"gzip", "br", "deflate", "zstd"},
},
{
name: "PreferOrder(): with invalid q-factor, no prefer",
accept: "br, deflate, gzip;q=2, zstd;q=0.1",
prefer: []string{},
expected: []string{"br", "deflate", "gzip", "zstd"},
},
}
enc := new(Encode)
r, _ := http.NewRequest("", "", nil)
for _, test := range testCases {
t.Run(test.name, func(t *testing.T) {
if test.accept == "" {
r.Header.Del("Accept-Encoding")
} else {
r.Header.Set("Accept-Encoding", test.accept)
}
enc.Prefer = test.prefer
result := AcceptedEncodings(r, enc.Prefer)
if !sliceEqual(result, test.expected) {
t.Errorf("AcceptedEncodings() actual: %s expected: %s",
result,
test.expected)
}
})
}
}
func sliceEqual(a, b []string) bool {
if len(a) != len(b) {
return false
}
for i := range a {
if a[i] != b[i] {
return false
}
}
return true
}
func TestValidate(t *testing.T) {
type testCase struct {
name string
prefer []string
wantErr bool
}
var err error
var testCases []testCase
enc := new(Encode)
enc.writerPools = map[string]*sync.Pool{
"zstd": nil,
"gzip": nil,
"br": nil,
}
testCases = []testCase{
{
name: "ValidatePrefer (zstd, gzip & br enabled): valid order with all encoder",
prefer: []string{"zstd", "br", "gzip"},
wantErr: false,
},
{
name: "ValidatePrefer (zstd, gzip & br enabled): valid order with 2 out of 3 encoders",
prefer: []string{"br", "gzip"},
wantErr: false,
},
{
name: "ValidatePrefer (zstd, gzip & br enabled): valid order with 1 out of 3 encoders",
prefer: []string{"gzip"},
wantErr: false,
},
{
name: "ValidatePrefer (zstd, gzip & br enabled): 1 duplicated (once) encoder",
prefer: []string{"gzip", "zstd", "gzip"},
wantErr: true,
},
{
name: "ValidatePrefer (zstd, gzip & br enabled): 1 not enabled encoder in prefer list",
prefer: []string{"br", "zstd", "gzip", "deflate"},
wantErr: true,
},
{
name: "ValidatePrefer (zstd, gzip & br enabled): no prefer list",
prefer: []string{},
wantErr: false,
},
}
for _, test := range testCases {
t.Run(test.name, func(t *testing.T) {
enc.Prefer = test.prefer
err = enc.Validate()
if (err != nil) != test.wantErr {
t.Errorf("Validate() error = %v, wantErr = %v", err, test.wantErr)
}
})
}
enc.writerPools = map[string]*sync.Pool{
"zstd": nil,
"gzip": nil,
}
testCases = []testCase{
{
name: "ValidatePrefer (zstd & gzip enabled): 1 not enabled encoder in prefer list",
prefer: []string{"zstd", "br", "gzip"},
wantErr: true,
},
{
name: "ValidatePrefer (zstd & gzip enabled): 2 not enabled encoder in prefer list",
prefer: []string{"br", "zstd", "gzip", "deflate"},
wantErr: true,
},
{
name: "ValidatePrefer (zstd & gzip enabled): only not enabled encoder in prefer list",
prefer: []string{"deflate", "br", "gzip"},
wantErr: true,
},
{
name: "ValidatePrefer (zstd & gzip enabled): 1 duplicated (once) encoder in prefer list",
prefer: []string{"gzip", "zstd", "gzip"},
wantErr: true,
},
{
name: "ValidatePrefer (zstd & gzip enabled): 1 duplicated (twice) encoder in prefer list",
prefer: []string{"gzip", "zstd", "gzip", "gzip"},
wantErr: true,
},
{
name: "ValidatePrefer (zstd & gzip enabled): 1 duplicated encoder in prefer list",
prefer: []string{"zstd", "zstd", "gzip", "gzip"},
wantErr: true,
},
{
name: "ValidatePrefer (zstd & gzip enabled): 1 duplicated not enabled encoder in prefer list",
prefer: []string{"br", "br", "gzip"},
wantErr: true,
},
{
name: "ValidatePrefer (zstd & gzip enabled): 2 duplicated not enabled encoder in prefer list",
prefer: []string{"br", "deflate", "br", "deflate"},
wantErr: true,
},
{
name: "ValidatePrefer (zstd & gzip enabled): valid order zstd first",
prefer: []string{"zstd", "gzip"},
wantErr: false,
},
{
name: "ValidatePrefer (zstd & gzip enabled): valid order gzip first",
prefer: []string{"gzip", "zstd"},
wantErr: false,
},
}
for _, test := range testCases {
t.Run(test.name, func(t *testing.T) {
enc.Prefer = test.prefer
err = enc.Validate()
if (err != nil) != test.wantErr {
t.Errorf("Validate() error = %v, wantErr = %v", err, test.wantErr)
}
})
}
}
func TestIsEncodeAllowed(t *testing.T) {
testCases := []struct {
name string
headers http.Header
expected bool
}{
{
name: "Without any headers",
headers: http.Header{},
expected: true,
},
{
name: "Without Cache-Control HTTP header",
headers: http.Header{
"Accept-Encoding": {"gzip"},
},
expected: true,
},
{
name: "Cache-Control HTTP header ending with no-transform directive",
headers: http.Header{
"Accept-Encoding": {"gzip"},
"Cache-Control": {"no-cache; no-transform"},
},
expected: false,
},
{
name: "With Cache-Control HTTP header no-transform as Cache-Extension value",
headers: http.Header{
"Accept-Encoding": {"gzip"},
"Cache-Control": {`no-store; no-cache; community="no-transform"`},
},
expected: false,
},
}
for _, test := range testCases {
t.Run(test.name, func(t *testing.T) {
if result := isEncodeAllowed(test.headers); result != test.expected {
t.Errorf("The headers given to the isEncodeAllowed should return %t, %t given.",
result,
test.expected)
}
})
}
}
|
