Api/v1/statuses (#11)

This PR adds:
Statuses

    New status creation.
    View existing status
    Delete a status
    Fave a status
    Unfave a status
    See who's faved a status

Media

    Upload media attachment and store/retrieve it
    Upload custom emoji and store/retrieve it

Fileserver

    Serve files from storage

Testing

    Test models, testrig -- run a GTS test instance and play around with it.

testrig/storage.go

@@ -0,0 +1,105 @@
+/*
+   GoToSocial
+   Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package testrig
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/superseriousbusiness/gotosocial/internal/storage"
+)
+
+// NewTestStorage returns a new in memory storage with the default test config
+func NewTestStorage() storage.Storage {
+	s, err := storage.NewInMem(NewTestConfig(), NewTestLog())
+	if err != nil {
+		panic(err)
+	}
+	return s
+}
+
+// StandardStorageSetup populates the storage with standard test entries from the given directory.
+func StandardStorageSetup(s storage.Storage, relativePath string) {
+	storedA := NewTestStoredAttachments()
+	a := NewTestAttachments()
+	for k, paths := range storedA {
+		attachmentInfo, ok := a[k]
+		if !ok {
+			panic(fmt.Errorf("key %s not found in test attachments", k))
+		}
+		filenameOriginal := paths.original
+		filenameSmall := paths.small
+		pathOriginal := attachmentInfo.File.Path
+		pathSmall := attachmentInfo.Thumbnail.Path
+		bOriginal, err := os.ReadFile(fmt.Sprintf("%s/%s", relativePath, filenameOriginal))
+		if err != nil {
+			panic(err)
+		}
+		if err := s.StoreFileAt(pathOriginal, bOriginal); err != nil {
+			panic(err)
+		}
+		bSmall, err := os.ReadFile(fmt.Sprintf("%s/%s", relativePath, filenameSmall))
+		if err != nil {
+			panic(err)
+		}
+		if err := s.StoreFileAt(pathSmall, bSmall); err != nil {
+			panic(err)
+		}
+	}
+
+	storedE := NewTestStoredEmoji()
+	e := NewTestEmojis()
+	for k, paths := range storedE {
+		emojiInfo, ok := e[k]
+		if !ok {
+			panic(fmt.Errorf("key %s not found in test emojis", k))
+		}
+		filenameOriginal := paths.original
+		filenameStatic := paths.static
+		pathOriginal := emojiInfo.ImagePath
+		pathStatic := emojiInfo.ImageStaticPath
+		bOriginal, err := os.ReadFile(fmt.Sprintf("%s/%s", relativePath, filenameOriginal))
+		if err != nil {
+			panic(err)
+		}
+		if err := s.StoreFileAt(pathOriginal, bOriginal); err != nil {
+			panic(err)
+		}
+		bStatic, err := os.ReadFile(fmt.Sprintf("%s/%s", relativePath, filenameStatic))
+		if err != nil {
+			panic(err)
+		}
+		if err := s.StoreFileAt(pathStatic, bStatic); err != nil {
+			panic(err)
+		}
+	}
+}
+
+// StandardStorageTeardown deletes everything in storage so that it's clean for the next test
+func StandardStorageTeardown(s storage.Storage) {
+	keys, err := s.ListKeys()
+	if err != nil {
+		panic(err)
+	}
+	for _, k := range keys {
+		if err := s.RemoveFileAt(k); err != nil {
+			panic(err)
+		}
+	}
+}