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// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: © 2015 LabStack LLC and Echo contributors
package echo
import (
"github.com/stretchr/testify/assert"
"io/fs"
"net/http"
"net/http/httptest"
"os"
"testing"
)
func TestContext_File(t *testing.T) {
var testCases = []struct {
name string
whenFile string
whenFS fs.FS
expectStatus int
expectStartsWith []byte
expectError string
}{
{
name: "ok, from default file system",
whenFile: "_fixture/images/walle.png",
whenFS: nil,
expectStatus: http.StatusOK,
expectStartsWith: []byte{0x89, 0x50, 0x4e},
},
{
name: "ok, from custom file system",
whenFile: "walle.png",
whenFS: os.DirFS("_fixture/images"),
expectStatus: http.StatusOK,
expectStartsWith: []byte{0x89, 0x50, 0x4e},
},
{
name: "nok, not existent file",
whenFile: "not.png",
whenFS: os.DirFS("_fixture/images"),
expectStatus: http.StatusOK,
expectStartsWith: nil,
expectError: "code=404, message=Not Found",
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
e := New()
if tc.whenFS != nil {
e.Filesystem = tc.whenFS
}
handler := func(ec Context) error {
return ec.(*context).File(tc.whenFile)
}
req := httptest.NewRequest(http.MethodGet, "/match.png", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
err := handler(c)
assert.Equal(t, tc.expectStatus, rec.Code)
if tc.expectError != "" {
assert.EqualError(t, err, tc.expectError)
} else {
assert.NoError(t, err)
}
body := rec.Body.Bytes()
if len(body) > len(tc.expectStartsWith) {
body = body[:len(tc.expectStartsWith)]
}
assert.Equal(t, tc.expectStartsWith, body)
})
}
}
func TestContext_FileFS(t *testing.T) {
var testCases = []struct {
name string
whenFile string
whenFS fs.FS
expectStatus int
expectStartsWith []byte
expectError string
}{
{
name: "ok",
whenFile: "walle.png",
whenFS: os.DirFS("_fixture/images"),
expectStatus: http.StatusOK,
expectStartsWith: []byte{0x89, 0x50, 0x4e},
},
{
name: "nok, not existent file",
whenFile: "not.png",
whenFS: os.DirFS("_fixture/images"),
expectStatus: http.StatusOK,
expectStartsWith: nil,
expectError: "code=404, message=Not Found",
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
e := New()
handler := func(ec Context) error {
return ec.(*context).FileFS(tc.whenFile, tc.whenFS)
}
req := httptest.NewRequest(http.MethodGet, "/match.png", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
err := handler(c)
assert.Equal(t, tc.expectStatus, rec.Code)
if tc.expectError != "" {
assert.EqualError(t, err, tc.expectError)
} else {
assert.NoError(t, err)
}
body := rec.Body.Bytes()
if len(body) > len(tc.expectStartsWith) {
body = body[:len(tc.expectStartsWith)]
}
assert.Equal(t, tc.expectStartsWith, body)
})
}
}
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