conf: add unit tests (#5954)

* conf: add tests for utils.go

* conf: add tests for static.go

* mock os/exec

* Run tests on Windows

* appveyor: fix gcc not found

* computed: add unit tests

* log: add unit tests

* log: fix tests on Windows

* conf: add some tests

* Finish adding tests

* Cover more cases

* Add tests for testutil

* Add more tests

2 files changed, 199 insertions, 0 deletions

diff --git a/internal/conf/testdata/TestInit.golden.ini b/internal/conf/testdata/TestInit.golden.ini
new file mode 100644
index 00000000..b08b90e1
--- /dev/null
+++ b/internal/conf/testdata/TestInit.golden.ini
@@ -0,0 +1,153 @@
+BRAND_NAME=Testing
+RUN_USER=git
+RUN_MODE=test
+APP_NAME=
+
+[server]
+EXTERNAL_URL=http://localhost:3080/
+DOMAIN=localhost
+PROTOCOL=http
+HTTP_ADDR=0.0.0.0
+HTTP_PORT=3000
+CERT_FILE=custom/https/cert.pem
+KEY_FILE=custom/https/key.pem
+TLS_MIN_VERSION=TLS12
+UNIX_SOCKET_PERMISSION=666
+LOCAL_ROOT_URL=http://0.0.0.0:3000/
+OFFLINE_MODE=false
+DISABLE_ROUTER_LOG=true
+ENABLE_GZIP=false
+APP_DATA_PATH=/tmp/data
+LOAD_ASSETS_FROM_DISK=false
+LANDING_URL=/explore
+ROOT_URL=
+LANDING_PAGE=
+DISABLE_SSH=false
+SSH_DOMAIN=localhost
+SSH_PORT=22
+SSH_ROOT_PATH=/tmp
+SSH_KEYGEN_PATH=ssh-keygen
+SSH_KEY_TEST_PATH=/tmp/ssh-key-test
+MINIMUM_KEY_SIZE_CHECK=true
+REWRITE_AUTHORIZED_KEYS_AT_START=false
+START_SSH_SERVER=false
+SSH_LISTEN_HOST=0.0.0.0
+SSH_LISTEN_PORT=22
+SSH_SERVER_CIPHERS=aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,arcfour256,arcfour128
+
+[repository]
+ROOT=/tmp/gogs-repositories
+SCRIPT_TYPE=bash
+ANSI_CHARSET=
+FORCE_PRIVATE=false
+MAX_CREATION_LIMIT=-1
+PREFERRED_LICENSES=Apache License 2.0,MIT License
+DISABLE_HTTP_GIT=false
+ENABLE_LOCAL_PATH_MIGRATION=false
+ENABLE_RAW_FILE_RENDER_MODE=false
+COMMITS_FETCH_CONCURRENCY=0
+
+[repository.editor]
+LINE_WRAP_EXTENSIONS=.txt,.md,.markdown,.mdown,.mkd
+PREVIEWABLE_FILE_MODES=markdown
+
+[repository.upload]
+ENABLED=true
+TEMP_PATH=/tmp/uploads
+ALLOWED_TYPES=
+FILE_MAX_SIZE=3
+MAX_FILES=5
+
+[database]
+TYPE=sqlite
+HOST=127.0.0.1:5432
+NAME=gogs
+USER=gogs
+PASSWORD=12345678
+SSL_MODE=disable
+PATH=/tmp/gogs.db
+DB_TYPE=
+PASSWD=
+
+[security]
+INSTALL_LOCK=false
+SECRET_KEY=`!#@FDEWREWR&*(`
+LOGIN_REMEMBER_DAYS=7
+COOKIE_REMEMBER_NAME=gogs_incredible
+COOKIE_USERNAME=gogs_awesome
+COOKIE_SECURE=false
+ENABLE_LOGIN_STATUS_COOKIE=false
+LOGIN_STATUS_COOKIE_NAME=login_status
+REVERSE_PROXY_AUTHENTICATION_USER=
+
+[email]
+ENABLED=true
+SUBJECT_PREFIX=[Gogs] 
+HOST=smtp.mailgun.org:587
+FROM=noreply@gogs.localhost
+USER=noreply@gogs.localhost
+PASSWORD=87654321
+DISABLE_HELO=false
+HELO_HOSTNAME=
+SKIP_VERIFY=false
+USE_CERTIFICATE=false
+CERT_FILE=custom/email/cert.pem
+KEY_FILE=custom/email/key.pem
+USE_PLAIN_TEXT=false
+ADD_PLAIN_TEXT_ALT=false
+PASSWD=
+
+[auth]
+ACTIVATE_CODE_LIVES=10
+RESET_PASSWORD_CODE_LIVES=10
+REQUIRE_EMAIL_CONFIRMATION=true
+REQUIRE_SIGNIN_VIEW=false
+DISABLE_REGISTRATION=false
+ENABLE_REGISTRATION_CAPTCHA=true
+ENABLE_REVERSE_PROXY_AUTHENTICATION=false
+ENABLE_REVERSE_PROXY_AUTO_REGISTRATION=false
+REVERSE_PROXY_AUTHENTICATION_HEADER=X-FORWARDED-FOR
+ACTIVE_CODE_LIVE_MINUTES=0
+RESET_PASSWD_CODE_LIVE_MINUTES=0
+REGISTER_EMAIL_CONFIRM=false
+ENABLE_CAPTCHA=false
+ENABLE_NOTIFY_MAIL=false
+
+[user]
+ENABLE_EMAIL_NOTIFICATION=true
+
+[session]
+PROVIDER=memory
+PROVIDER_CONFIG=data/sessions
+COOKIE_NAME=i_like_gogs
+COOKIE_SECURE=false
+GC_INTERVAL=10
+MAX_LIFE_TIME=10
+CSRF_COOKIE_NAME=_csrf
+GC_INTERVAL_TIME=0
+SESSION_LIFE_TIME=0
+
+[attachment]
+ENABLED=true
+PATH=/tmp/attachments
+ALLOWED_TYPES=image/jpeg|image/png
+MAX_SIZE=4
+MAX_FILES=5
+
+[time]
+FORMAT=RFC1123
+
+[picture]
+AVATAR_UPLOAD_PATH=/tmp/avatars
+REPOSITORY_AVATAR_UPLOAD_PATH=/tmp/repo-avatars
+GRAVATAR_SOURCE=https://secure.gravatar.com/avatar/
+DISABLE_GRAVATAR=false
+ENABLE_FEDERATED_AVATAR=false
+
+[mirror]
+DEFAULT_INTERVAL=8
+
+[i18n]
+LANGS=en-US,zh-CN,zh-HK,zh-TW,de-DE,fr-FR,nl-NL,lv-LV,ru-RU,ja-JP,es-ES,pt-BR,pl-PL,bg-BG,it-IT,fi-FI,tr-TR,cs-CZ,sr-SP,sv-SE,ko-KR,gl-ES,uk-UA,en-GB,hu-HU,sk-SK,id-ID,fa-IR,vi-VN,pt-PT
+NAMES=English,简体中文,繁體中文（香港）,繁體中文（臺灣）,Deutsch,français,Nederlands,latviešu,русский,日本語,español,português do Brasil,polski,български,italiano,suomi,Türkçe,čeština,српски,svenska,한국어,galego,українська,English (United Kingdom),Magyar,Slovenčina,Indonesian,Persian,Vietnamese,Português
+
diff --git a/internal/conf/testdata/custom.ini b/internal/conf/testdata/custom.ini
new file mode 100644
index 00000000..ca7160d0
--- /dev/null
+++ b/internal/conf/testdata/custom.ini
@@ -0,0 +1,46 @@
+APP_NAME = Testing
+RUN_MODE = test
+
+[server]
+ROOT_URL = http://localhost:3080/
+APP_DATA_PATH = /tmp/data
+SSH_ROOT_PATH = /tmp
+SSH_KEY_TEST_PATH = /tmp/ssh-key-test
+MINIMUM_KEY_SIZE_CHECK = true
+LANDING_PAGE = explore
+
+[repository]
+ROOT = /tmp/gogs-repositories
+
+[repository.upload]
+TEMP_PATH = /tmp/uploads
+
+[database]
+DB_TYPE = sqlite
+PASSWD = 12345678
+PATH = /tmp/gogs.db
+
+[security]
+REVERSE_PROXY_AUTHENTICATION_USER=X-FORWARDED-FOR
+
+[email]
+ENABLED = true
+PASSWD = 87654321
+
+[auth]
+ACTIVE_CODE_LIVE_MINUTES = 10
+RESET_PASSWD_CODE_LIVE_MINUTES = 10
+REGISTER_EMAIL_CONFIRM = true
+ENABLE_CAPTCHA = true
+ENABLE_NOTIFY_MAIL = true
+
+[session]
+GC_INTERVAL_TIME = 10
+SESSION_LIFE_TIME = 10
+
+[attachment]
+PATH = /tmp/attachments
+
+[picture]
+AVATAR_UPLOAD_PATH = /tmp/avatars
+REPOSITORY_AVATAR_UPLOAD_PATH = /tmp/repo-avatars