feat: Add operating system module (#4109)

* docs(os): Add os module documentation * docs(os): Add os to Default Prompt Format * chore(os): Update config file schema * feat(os): Add os entries and declarations * feat(os): Add os module and config * fix(os): Obey config.disabled * feat(os): make variables 'Unknown'-aware refactor(os): calculate variables in dedicated functions * test(os): Add os module tests * feat(os): make 'name' variable less 'Unknown'-aware * docs(os): Add Preset configurations docs(os): Use emoji as default * feat(os): Use emoji as default test(os): Use emoji as default * fix(os): Add spaces after emoji symbols * chore(os): Update config schema * feat(os): Remove `bitness` variable docs(os): Remove `bitness` variable test(os): Remove `bitness` test * feat(os): Add Cargo.toml upgrade caution for os_info * refactor(os): Clarify get_symbol function * docs(os): Mention supported operating systems and feature requests * docs(os): Mention os_info inacurracy * test(os): Remove `bitness` leftovers * refactor(os): use nu_ansi_term * refactor(os): add cfg_attr(schemars(deny_unknown_fields)) * chore(os): update config schema * docs(os): expose details block * feat(os): add garuda linux * chore(os): update config schema * feat(os): add case insensitivity * feat(os): add symbols `IndexMap` use `os_info::Type` instead of `String` * test(os): add clippy warn on new os_info::Type case * leave missing case to test github tests * test(os): re-add missing test case * style(os): fix formatting * docs(os): update to match os_info::Type serialization - docs(os): add missing garuda to config - test(os): mention docs updates in warn_on_os_info_update
2024-11-25 17:54:08 +01:00 · 2022-11-06 14:37:58 -07:00 · 2022-11-06 14:37:58 -07:00 · 3109943822
commit 3109943822
parent 0ba8533e2d
13 changed files with 769 additions and 1 deletions
--- a/.github/config-schema.json
+++ b/.github/config-schema.json
@ -1027,6 +1027,56 @@
        }
      ]
    },
+    "os": {
+      "default": {
+        "disabled": true,
+        "format": "[$symbol]($style)",
+        "style": "bold white",
+        "symbols": {
+          "Alpine": "🏔️ ",
+          "Amazon": "🙂 ",
+          "Android": "🤖 ",
+          "Arch": "🎗️ ",
+          "CentOS": "💠 ",
+          "Debian": "🌀 ",
+          "DragonFly": "🐉 ",
+          "Emscripten": "🔗 ",
+          "EndeavourOS": "🚀 ",
+          "Fedora": "🎩 ",
+          "FreeBSD": "😈 ",
+          "Garuda": "🦅 ",
+          "Gentoo": "🗜️ ",
+          "HardenedBSD": "🛡️ ",
+          "Illumos": "🐦 ",
+          "Linux": "🐧 ",
+          "Macos": "🍎 ",
+          "Manjaro": "🥭 ",
+          "Mariner": "🌊 ",
+          "MidnightBSD": "🌘 ",
+          "Mint": "🌿 ",
+          "NetBSD": "🚩 ",
+          "NixOS": "❄️ ",
+          "OpenBSD": "🐡 ",
+          "OracleLinux": "🦴 ",
+          "Pop": "🍭 ",
+          "Raspbian": "🍓 ",
+          "RedHatEnterprise": "🎩 ",
+          "Redhat": "🎩 ",
+          "Redox": "🧪 ",
+          "SUSE": "🦎 ",
+          "Solus": "⛵ ",
+          "Ubuntu": "🎯 ",
+          "Unknown": "❓ ",
+          "Windows": "🪟 ",
+          "openSUSE": "🦎 "
+        }
+      },
+      "allOf": [
+        {
+          "$ref": "#/definitions/OSConfig"
+        }
+      ]
+    },
    "package": {
      "default": {
        "disabled": false,
@ -3989,6 +4039,68 @@
      },
      "additionalProperties": false
    },
+    "OSConfig": {
+      "type": "object",
+      "properties": {
+        "format": {
+          "default": "[$symbol]($style)",
+          "type": "string"
+        },
+        "style": {
+          "default": "bold white",
+          "type": "string"
+        },
+        "symbols": {
+          "default": {
+            "Alpine": "🏔️ ",
+            "Amazon": "🙂 ",
+            "Android": "🤖 ",
+            "Arch": "🎗️ ",
+            "CentOS": "💠 ",
+            "Debian": "🌀 ",
+            "DragonFly": "🐉 ",
+            "Emscripten": "🔗 ",
+            "EndeavourOS": "🚀 ",
+            "Fedora": "🎩 ",
+            "FreeBSD": "😈 ",
+            "Garuda": "🦅 ",
+            "Gentoo": "🗜️ ",
+            "HardenedBSD": "🛡️ ",
+            "Illumos": "🐦 ",
+            "Linux": "🐧 ",
+            "Macos": "🍎 ",
+            "Manjaro": "🥭 ",
+            "Mariner": "🌊 ",
+            "MidnightBSD": "🌘 ",
+            "Mint": "🌿 ",
+            "NetBSD": "🚩 ",
+            "NixOS": "❄️ ",
+            "OpenBSD": "🐡 ",
+            "OracleLinux": "🦴 ",
+            "Pop": "🍭 ",
+            "Raspbian": "🍓 ",
+            "RedHatEnterprise": "🎩 ",
+            "Redhat": "🎩 ",
+            "Redox": "🧪 ",
+            "SUSE": "🦎 ",
+            "Solus": "⛵ ",
+            "Ubuntu": "🎯 ",
+            "Unknown": "❓ ",
+            "Windows": "🪟 ",
+            "openSUSE": "🦎 "
+          },
+          "type": "object",
+          "additionalProperties": {
+            "type": "string"
+          }
+        },
+        "disabled": {
+          "default": true,
+          "type": "boolean"
+        }
+      },
+      "additionalProperties": false
+    },
    "PackageConfig": {
      "type": "object",
      "properties": {
--- a/Cargo.toml
+++ b/Cargo.toml
@ -60,6 +60,7 @@ notify-rust = { version = "4.5.10", optional = true }
 nu-ansi-term = "0.46.0"
 once_cell = "1.16.0"
 open = "3.0.3"
+# update os module config and tests when upgrading os_info
 os_info = "3.5.1"
 path-slash = "0.2.1"
 pest = "2.4.1"
--- a/docs/.vuepress/public/presets/toml/bracketed-segments.toml
+++ b/docs/.vuepress/public/presets/toml/bracketed-segments.toml
@ -109,6 +109,9 @@ format = '\[[$symbol($version)]($style)\]'
 [openstack]
 format = '\[[$symbol$cloud(\($project\))]($style)\]'

+[os]
+format = '\[[$symbol]($style)\]'
+
 [package]
 format = '\[[$symbol$version]($style)\]'

--- a/docs/.vuepress/public/presets/toml/nerd-font-symbols.toml
+++ b/docs/.vuepress/public/presets/toml/nerd-font-symbols.toml
@ -64,6 +64,44 @@ symbol = " "
 [nodejs]
 symbol = " "

+[os.symbols]
+Alpine = " "
+Amazon = " "
+Android = " "
+Arch = " "
+CentOS = " "
+Debian = " "
+DragonFly = " "
+Emscripten = " "
+EndeavourOS = " "
+Fedora = " "
+FreeBSD = " "
+Garuda = "﯑ "
+Gentoo = " "
+HardenedBSD = "ﲊ "
+Illumos = " "
+Linux = " "
+Macos = " "
+Manjaro = " "
+Mariner = " "
+MidnightBSD = " "
+Mint = " "
+NetBSD = " "
+NixOS = " "
+OpenBSD = " "
+openSUSE = " "
+OracleLinux = " "
+Pop = " "
+Raspbian = " "
+Redhat = " "
+RedHatEnterprise = " "
+Redox = " "
+Solus = "ﴱ "
+SUSE = " "
+Ubuntu = " "
+Unknown = " "
+Windows = " "
+
 [package]
 symbol = " "

--- a/docs/.vuepress/public/presets/toml/pastel-powerline.toml
+++ b/docs/.vuepress/public/presets/toml/pastel-powerline.toml
@ -1,5 +1,6 @@
 format = """
 [](#9A348E)\
+$os\
 $username\
 [](bg:#DA627D fg:#9A348E)\
 $directory\
@ -28,12 +29,20 @@ $time\
 # Disable the blank line at the start of the prompt
 # add_newline = false

-# You can also replace your username with a neat symbol like  to save some space
+# You can also replace your username with a neat symbol like   or disable this
+# and use the os module below
 [username]
 show_always = true
 style_user = "bg:#9A348E"
 style_root = "bg:#9A348E"
 format = '[$user ]($style)'
+disabled = false
+
+# An alternative to the username module which displays a symbol that
+# represents the current operating system
+[os]
+style = "bg:#9A348E"
+disabled = true # Disabled by default

 [directory]
 style = "bg:#DA627D"
--- a/docs/.vuepress/public/presets/toml/plain-text-symbols.toml
+++ b/docs/.vuepress/public/presets/toml/plain-text-symbols.toml
@ -103,6 +103,44 @@ symbol = "ml "
 [opa]
 symbol = "opa "

+[os.symbols]
+Alpine = "alp "
+Amazon = "amz "
+Android = "andr "
+Arch = "rch "
+CentOS = "cent "
+Debian = "deb "
+DragonFly = "dfbsd "
+Emscripten = "emsc "
+EndeavourOS = "ndev "
+Fedora = "fed "
+FreeBSD = "fbsd "
+Garuda = "garu "
+Gentoo = "gent "
+HardenedBSD = "hbsd "
+Illumos = "lum "
+Linux = "lnx "
+Macos = "mac "
+Manjaro = "mjo "
+Mariner = "mrn "
+MidnightBSD = "mid "
+Mint = "mint "
+NetBSD = "nbsd "
+NixOS = "nix "
+OpenBSD = "obsd "
+openSUSE = "osuse "
+OracleLinux = "orac "
+Pop = "pop "
+Raspbian = "rasp "
+Redhat = "rhl "
+RedHatEnterprise = "rhel "
+Redox = "redox "
+Solus = "sol "
+SUSE = "suse "
+Ubuntu = "ubnt "
+Unknown = "unk "
+Windows = "win "
+
 [package]
 symbol = "pkg "

--- a/docs/config/README.md
+++ b/docs/config/README.md
@ -331,6 +331,7 @@ $jobs\
 $battery\
 $time\
 $status\
+$os\
 $container\
 $shell\
 $character"""
@ -2782,6 +2783,108 @@ style = 'bold yellow'
 symbol = '☁️ '
 ```

+## OS
+
+The `os` module shows the current operating system.
+OS information is detected via the [os_info](https://lib.rs/crates/os_info) crate.
+
+::: warning
+
+The [os_info](https://lib.rs/crates/os_info) crate used by this module is known to be inaccurate on some systems.
+
+:::
+
+::: tip
+
+This module is disabled by default.
+To enable it, set `disabled` to `false` in your configuration file.
+
+:::
+
+### Options
+
+| Option     | Default               | Description                                            |
+| ---------- | --------------------- | ------------------------------------------------------ |
+| `format`   | `"[$symbol]($style)"` | The format for the module.                             |
+| `style`    | `"bold white"`        | The style for the module.                              |
+| `disabled` | `true`                | Disables the `os` module.                              |
+| `symbols`  |                       | A table that maps each operating system to its symbol. |
+
+`symbols` allows you to define arbitrary symbols to display for each operating system type.
+Operating system types not defined by your configuration use the default symbols table below.
+All operating systems currently supported by the module are listed below.
+If you would like an operating system to be added, feel free to open a [feature request](https://github.com/starship/starship/issues/new/choose).
+
+```toml
+# This is the default symbols table.
+[os.symbols]
+Alpine = "🏔️ "
+Amazon = "🙂 "
+Android = "🤖 "
+Arch = "🎗️ "
+CentOS = "💠 "
+Debian = "🌀 "
+DragonFly = "🐉 "
+Emscripten = "🔗 "
+EndeavourOS = "🚀 "
+Fedora = "🎩 "
+FreeBSD = "😈 "
+Garuda = "🦅 "
+Gentoo = "🗜️ "
+HardenedBSD = "🛡️ "
+Illumos = "🐦 "
+Linux = "🐧 "
+Macos = "🍎 "
+Manjaro = "🥭 "
+Mariner = "🌊 "
+MidnightBSD = "🌘 "
+Mint = "🌿 "
+NetBSD = "🚩 "
+NixOS = "❄️ "
+OpenBSD = "🐡 "
+openSUSE = "🦎 "
+OracleLinux = "🦴 "
+Pop = "🍭 "
+Raspbian = "🍓 "
+Redhat = "🎩 "
+RedHatEnterprise = "🎩 "
+Redox = "🧪 "
+Solus = "⛵ "
+SUSE = "🦎 "
+Ubuntu = "🎯 "
+Unknown = "❓ "
+Windows = "🪟 "
+```
+
+### Variables
+
+| Variable | Example      | Description                                                        |
+| -------- | ------------ | ------------------------------------------------------------------ |
+| symbol   | `🎗️`         | The current operating system symbol from advanced option `symbols` |
+| name     | `Arch Linux` | The current operating system name                                  |
+| type     | `Arch`       | The current operating system type                                  |
+| codename |              | The current operating system codename, if applicable               |
+| edition  |              | The current operating system edition, if applicable                |
+| version  |              | The current operating system version, if applicable                |
+| style\*  |              | Mirrors the value of option `style`                                |
+
+*: This variable can only be used as a part of a style string
+
+### Example
+
+```toml
+# ~/.config/starship.toml
+
+[os]
+format = "on [($name )]($style)"
+style = "bold blue"
+disabled = false
+
+[os.symbols]
+Windows = " "
+Arch = "Arch is the best! "
+```
+
 ## Package Version

 The `package` module is shown when the current directory is the repository for a
--- a/src/configs/mod.rs
+++ b/src/configs/mod.rs
@ -54,6 +54,7 @@ pub mod nodejs;
 pub mod ocaml;
 pub mod opa;
 pub mod openstack;
+pub mod os;
 pub mod package;
 pub mod perl;
 pub mod php;
@ -203,6 +204,8 @@ pub struct FullConfig<'a> {
    #[serde(borrow)]
    openstack: openstack::OspConfig<'a>,
    #[serde(borrow)]
+    os: os::OSConfig<'a>,
+    #[serde(borrow)]
    package: package::PackageConfig<'a>,
    #[serde(borrow)]
    perl: perl::PerlConfig<'a>,
--- a/src/configs/os.rs
+++ b/src/configs/os.rs
@ -0,0 +1,83 @@
+use indexmap::{indexmap, IndexMap};
+use os_info::Type;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Deserialize, Serialize)]
+#[cfg_attr(
+    feature = "config-schema",
+    derive(schemars::JsonSchema),
+    schemars(deny_unknown_fields)
+)]
+#[serde(default)]
+pub struct OSConfig<'a> {
+    pub format: &'a str,
+    pub style: &'a str,
+    pub symbols: IndexMap<Type, &'a str>,
+    pub disabled: bool,
+}
+
+impl<'a> OSConfig<'a> {
+    pub fn get_symbol(&self, key: &Type) -> Option<&'a str> {
+        self.symbols.get(key).cloned()
+    }
+}
+
+impl<'a> Default for OSConfig<'a> {
+    fn default() -> Self {
+        OSConfig {
+            format: "[$symbol]($style)",
+            style: "bold white",
+            symbols: indexmap! {
+                Type::Alpine => "🏔️ ",
+                Type::Amazon => "🙂 ",
+                Type::Android => "🤖 ",
+                Type::Arch => "🎗️ ",
+                Type::CentOS => "💠 ",
+                Type::Debian => "🌀 ",
+                Type::DragonFly => "🐉 ",
+                Type::Emscripten => "🔗 ",
+                Type::EndeavourOS => "🚀 ",
+                Type::Fedora => "🎩 ",
+                Type::FreeBSD => "😈 ",
+                Type::Garuda => "🦅 ",
+                Type::Gentoo => "🗜️ ",
+                Type::HardenedBSD => "🛡️ ",
+                Type::Illumos => "🐦 ",
+                Type::Linux => "🐧 ",
+                Type::Macos => "🍎 ",
+                Type::Manjaro => "🥭 ",
+                Type::Mariner => "🌊 ",
+                Type::MidnightBSD => "🌘 ",
+                Type::Mint => "🌿 ",
+                Type::NetBSD => "🚩 ",
+                Type::NixOS => "❄️ ",
+                Type::OpenBSD => "🐡 ",
+                Type::openSUSE => "🦎 ",
+                Type::OracleLinux => "🦴 ",
+                Type::Pop => "🍭 ",
+                Type::Raspbian => "🍓 ",
+                Type::Redhat => "🎩 ",
+                Type::RedHatEnterprise => "🎩 ",
+                Type::Redox => "🧪 ",
+                Type::Solus => "⛵ ",
+                Type::SUSE => "🦎 ",
+                Type::Ubuntu => "🎯 ",
+                Type::Unknown => "❓ ",
+                Type::Windows => "🪟 ",
+                // Future symbols.
+                //aosc =>       " ",
+                //artix =>      " ",
+                //coreos =>     " ",
+                //devuan =>     " ",
+                //elementary => " ",
+                //mageia =>     " ",
+                //mandriva =>   " ",
+                //sabayon =>    " ",
+                //slackware =>  " ",
+                //void =>       " ",
+                //solaris =>    " ",
+            },
+            disabled: true,
+        }
+    }
+}
--- a/src/configs/starship_root.rs
+++ b/src/configs/starship_root.rs
@ -108,6 +108,7 @@ pub const PROMPT_ORDER: &[&str] = &[
    "time",
    "status",
    "container",
+    "os",
    "shell",
    "character",
 ];
--- a/src/module.rs
+++ b/src/module.rs
@ -62,6 +62,7 @@ pub const ALL_MODULES: &[&str] = &[
    "ocaml",
    "opa",
    "openstack",
+    "os",
    "package",
    "perl",
    "php",
--- a/src/modules/mod.rs
+++ b/src/modules/mod.rs
@ -51,6 +51,7 @@ mod nodejs;
 mod ocaml;
 mod opa;
 mod openstack;
+mod os;
 mod package;
 mod perl;
 mod php;
@ -148,6 +149,7 @@ pub fn handle<'a>(module: &str, context: &'a Context) -> Option<Module<'a>> {
            "ocaml" => ocaml::module(context),
            "opa" => opa::module(context),
            "openstack" => openstack::module(context),
+            "os" => os::module(context),
            "package" => package::module(context),
            "perl" => perl::module(context),
            "php" => php::module(context),
@ -258,6 +260,7 @@ pub fn description(module: &str) -> &'static str {
        "ocaml" => "The currently installed version of OCaml",
        "opa" => "The currently installed version of Open Platform Agent",
        "openstack" => "The current OpenStack cloud and project",
+        "os" => "The current operating system",
        "package" => "The package version of the current directory's project",
        "perl" => "The currently installed version of Perl",
        "php" => "The currently installed version of PHP",
--- a/src/modules/os.rs
+++ b/src/modules/os.rs
@ -0,0 +1,373 @@
+use super::{Context, Module, ModuleConfig};
+
+use crate::configs::os::OSConfig;
+use crate::formatter::StringFormatter;
+
+/// Creates a module with the current operating system
+pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
+    let mut module = context.new_module("os");
+    let config: OSConfig = OSConfig::try_load(module.config);
+
+    if config.disabled {
+        return None;
+    }
+
+    #[cfg(not(test))]
+    let os = os_info::get();
+
+    #[cfg(test)]
+    let os = os_info::Info::default();
+
+    let parsed = StringFormatter::new(config.format).and_then(|formatter| {
+        formatter
+            .map_meta(|variable, _| match variable {
+                "symbol" => get_symbol(&config, &os.os_type()),
+                _ => None,
+            })
+            .map_style(|variable| match variable {
+                "style" => Some(Ok(config.style)),
+                _ => None,
+            })
+            .map(|variable| match variable {
+                "codename" => get_codename(&os).map(Ok),
+                "edition" => get_edition(&os).map(Ok),
+                "name" => get_name(&os).map(Ok),
+                "type" => get_type(&os).map(Ok),
+                "version" => get_version(&os).map(Ok),
+                _ => None,
+            })
+            .parse(None, Some(context))
+    });
+    module.set_segments(match parsed {
+        Ok(segments) => segments,
+        Err(error) => {
+            log::warn!("Error in module `os`:\n{}", error);
+            return None;
+        }
+    });
+
+    Some(module)
+}
+
+// Get the operating system symbol from user config, or else default config
+// when user has not defined a symbol for the operating system.
+fn get_symbol<'a>(config: &'a OSConfig, os_type: &os_info::Type) -> Option<&'a str> {
+    config
+        .get_symbol(os_type)
+        .or_else(|| OSConfig::default().get_symbol(os_type))
+}
+
+fn get_codename(os: &os_info::Info) -> Option<String> {
+    os.codename().map(String::from)
+}
+
+fn get_edition(os: &os_info::Info) -> Option<String> {
+    os.edition().map(String::from)
+}
+
+fn get_name(os: &os_info::Info) -> Option<String> {
+    Some(os.os_type().to_string())
+}
+
+fn get_type(os: &os_info::Info) -> Option<String> {
+    // String from os_info::Type
+    Some(format!("{:?}", os.os_type()))
+}
+
+fn get_version(os: &os_info::Info) -> Option<String> {
+    Some(os.version())
+        .filter(|&x| x != &os_info::Version::Unknown)
+        .map(|x| x.to_string())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::test::ModuleRenderer;
+    use nu_ansi_term::Color;
+    use os_info::Type;
+
+    #[test]
+    fn default() {
+        let actual = ModuleRenderer::new("os").collect();
+
+        assert_eq!(actual, None);
+    }
+
+    #[test]
+    fn default_enabled() {
+        let actual = ModuleRenderer::new("os")
+            .config(toml::toml! {
+                [os]
+                disabled = false
+            })
+            .collect();
+
+        let expected = Some(format!("{}", Color::White.bold().paint("❓ ")));
+
+        assert_eq!(actual, expected);
+    }
+
+    #[test]
+    fn all_segments() {
+        let actual = ModuleRenderer::new("os")
+            .config(toml::toml! {
+                [os]
+                disabled = false
+                format = "[$symbol($codename )($edition )($name )($type )($version )]($style)"
+            })
+            .collect();
+
+        let expected = Some(format!(
+            "{}",
+            Color::White.bold().paint("❓ Unknown Unknown ")
+        ));
+
+        assert_eq!(actual, expected);
+    }
+
+    #[test]
+    fn get_symbol_default() {
+        let config = OSConfig::try_load(None);
+
+        let type_expected_pairs = [
+            (Type::Alpine, Some("🏔️ ")),
+            (Type::Amazon, Some("🙂 ")),
+            (Type::Android, Some("🤖 ")),
+            (Type::Arch, Some("🎗️ ")),
+            (Type::CentOS, Some("💠 ")),
+            (Type::Debian, Some("🌀 ")),
+            (Type::DragonFly, Some("🐉 ")),
+            (Type::Emscripten, Some("🔗 ")),
+            (Type::EndeavourOS, Some("🚀 ")),
+            (Type::Fedora, Some("🎩 ")),
+            (Type::FreeBSD, Some("😈 ")),
+            (Type::Garuda, Some("🦅 ")),
+            (Type::Gentoo, Some("🗜️ ")),
+            (Type::HardenedBSD, Some("🛡️ ")),
+            (Type::Illumos, Some("🐦 ")),
+            (Type::Linux, Some("🐧 ")),
+            (Type::Macos, Some("🍎 ")),
+            (Type::Manjaro, Some("🥭 ")),
+            (Type::Mariner, Some("🌊 ")),
+            (Type::MidnightBSD, Some("🌘 ")),
+            (Type::Mint, Some("🌿 ")),
+            (Type::NetBSD, Some("🚩 ")),
+            (Type::NixOS, Some("❄️ ")),
+            (Type::OpenBSD, Some("🐡 ")),
+            (Type::openSUSE, Some("🦎 ")),
+            (Type::OracleLinux, Some("🦴 ")),
+            (Type::Pop, Some("🍭 ")),
+            (Type::Raspbian, Some("🍓 ")),
+            (Type::Redhat, Some("🎩 ")),
+            (Type::RedHatEnterprise, Some("🎩 ")),
+            (Type::Redox, Some("🧪 ")),
+            (Type::Solus, Some("⛵ ")),
+            (Type::SUSE, Some("🦎 ")),
+            (Type::Ubuntu, Some("🎯 ")),
+            (Type::Unknown, Some("❓ ")),
+            (Type::Windows, Some("🪟 ")),
+        ];
+
+        for (t, e) in type_expected_pairs {
+            assert_eq!(get_symbol(&config, &t), e);
+        }
+    }
+
+    #[test]
+    fn get_symbol_custom() {
+        let config_toml = toml::toml! {
+            [symbols]
+            Alpine = " "
+            Amazon = " "
+            Android = " "
+            Arch = " "
+            CentOS = " "
+            Debian = " "
+            DragonFly = " "
+            Emscripten = " "
+            EndeavourOS = " "
+            Fedora = " "
+            FreeBSD = " "
+            Garuda = "﯑ "
+            Gentoo = " "
+            HardenedBSD = "ﲊ "
+            Illumos = " "
+            Linux = " "
+            Macos = " "
+            Manjaro = " "
+            Mariner = " "
+            MidnightBSD = " "
+            Mint = " "
+            NetBSD = " "
+            NixOS = " "
+            OpenBSD = " "
+            SUSE = " "
+            OracleLinux = " "
+            Pop = " "
+            Raspbian = " "
+            Redhat = " "
+            RedHatEnterprise = " "
+            Redox = " "
+            Solus = "ﴱ "
+            openSUSE = " "
+            Ubuntu = " "
+            Unknown = " "
+            Windows = " "
+        };
+
+        let config = OSConfig::load(&config_toml);
+
+        let type_expected_pairs = [
+            (Type::Alpine, Some(" ")),
+            (Type::Amazon, Some(" ")),
+            (Type::Android, Some(" ")),
+            (Type::Arch, Some(" ")),
+            (Type::CentOS, Some(" ")),
+            (Type::Debian, Some(" ")),
+            (Type::DragonFly, Some(" ")),
+            (Type::Emscripten, Some(" ")),
+            (Type::EndeavourOS, Some(" ")),
+            (Type::Fedora, Some(" ")),
+            (Type::FreeBSD, Some(" ")),
+            (Type::Garuda, Some("﯑ ")),
+            (Type::Gentoo, Some(" ")),
+            (Type::HardenedBSD, Some("ﲊ ")),
+            (Type::Illumos, Some(" ")),
+            (Type::Linux, Some(" ")),
+            (Type::Macos, Some(" ")),
+            (Type::Manjaro, Some(" ")),
+            (Type::Mariner, Some(" ")),
+            (Type::MidnightBSD, Some(" ")),
+            (Type::Mint, Some(" ")),
+            (Type::NetBSD, Some(" ")),
+            (Type::NixOS, Some(" ")),
+            (Type::OpenBSD, Some(" ")),
+            (Type::SUSE, Some(" ")),
+            (Type::OracleLinux, Some(" ")),
+            (Type::Pop, Some(" ")),
+            (Type::Raspbian, Some(" ")),
+            (Type::Redhat, Some(" ")),
+            (Type::RedHatEnterprise, Some(" ")),
+            (Type::Redox, Some(" ")),
+            (Type::Solus, Some("ﴱ ")),
+            (Type::openSUSE, Some(" ")),
+            (Type::Ubuntu, Some(" ")),
+            (Type::Unknown, Some(" ")),
+            (Type::Windows, Some(" ")),
+        ];
+
+        for (t, e) in type_expected_pairs {
+            assert_eq!(get_symbol(&config, &t), e);
+        }
+    }
+
+    #[test]
+    fn get_symbol_fallback() {
+        let config_toml = toml::toml! {
+            [symbols]
+            Unknown = ""
+            Arch = "Arch is the best!"
+        };
+
+        let config = OSConfig::load(&config_toml);
+
+        let type_expected_pairs = [
+            (Type::Alpine, Some("🏔️ ")),
+            (Type::Amazon, Some("🙂 ")),
+            (Type::Android, Some("🤖 ")),
+            (Type::Arch, Some("Arch is the best!")),
+            (Type::CentOS, Some("💠 ")),
+            (Type::Debian, Some("🌀 ")),
+            (Type::DragonFly, Some("🐉 ")),
+            (Type::Emscripten, Some("🔗 ")),
+            (Type::EndeavourOS, Some("🚀 ")),
+            (Type::Fedora, Some("🎩 ")),
+            (Type::FreeBSD, Some("😈 ")),
+            (Type::Garuda, Some("🦅 ")),
+            (Type::Gentoo, Some("🗜️ ")),
+            (Type::HardenedBSD, Some("🛡️ ")),
+            (Type::Illumos, Some("🐦 ")),
+            (Type::Linux, Some("🐧 ")),
+            (Type::Macos, Some("🍎 ")),
+            (Type::Manjaro, Some("🥭 ")),
+            (Type::Mariner, Some("🌊 ")),
+            (Type::MidnightBSD, Some("🌘 ")),
+            (Type::Mint, Some("🌿 ")),
+            (Type::NetBSD, Some("🚩 ")),
+            (Type::NixOS, Some("❄️ ")),
+            (Type::OpenBSD, Some("🐡 ")),
+            (Type::openSUSE, Some("🦎 ")),
+            (Type::OracleLinux, Some("🦴 ")),
+            (Type::Pop, Some("🍭 ")),
+            (Type::Raspbian, Some("🍓 ")),
+            (Type::Redhat, Some("🎩 ")),
+            (Type::RedHatEnterprise, Some("🎩 ")),
+            (Type::Redox, Some("🧪 ")),
+            (Type::Solus, Some("⛵ ")),
+            (Type::SUSE, Some("🦎 ")),
+            (Type::Ubuntu, Some("🎯 ")),
+            (Type::Unknown, Some("")),
+            (Type::Windows, Some("🪟 ")),
+        ];
+
+        for (t, e) in type_expected_pairs {
+            assert_eq!(get_symbol(&config, &t), e);
+        }
+    }
+
+    #[test]
+    fn warn_on_os_info_update() {
+        #[warn(clippy::wildcard_enum_match_arm)]
+        // This closure is the same as the default config symbols list.
+        // When this clippy test fails, a new default symbol should be added to
+        // `config/os.rs` to exhaustively match new possible `os_info::Type` cases.
+        // Affects:
+        // - crate::configs::os::OSConfig::default()
+        // - crate::modules::os::tests
+        // - docs/config/README.md/#Configuration/#OS/#Options
+        // - docs/config/README.md/#Configuration/#OS/#Example
+        // - docs/.vuepress/public/presets/toml/plain-text-symbols.toml
+        // - dosc/.vuepress/public/presets/toml/nerd-font-symbols.toml
+        // - .github/config-schema.json
+        let _ = |t: Type| match t {
+            Type::Alpine => "🏔️ ",
+            Type::Amazon => "🙂 ",
+            Type::Android => "🤖 ",
+            Type::Arch => "🎗️ ",
+            Type::CentOS => "💠 ",
+            Type::Debian => "🌀 ",
+            Type::DragonFly => "🐉 ",
+            Type::Emscripten => "🔗 ",
+            Type::EndeavourOS => "🚀 ",
+            Type::Fedora => "🎩 ",
+            Type::FreeBSD => "😈 ",
+            Type::Garuda => "🦅 ",
+            Type::Gentoo => "🗜️ ",
+            Type::HardenedBSD => "🛡️ ",
+            Type::Illumos => "🐦 ",
+            Type::Linux => "🐧 ",
+            Type::Macos => "🍎 ",
+            Type::Manjaro => "🥭 ",
+            Type::Mariner => "🌊 ",
+            Type::MidnightBSD => "🌘 ",
+            Type::Mint => "🌿 ",
+            Type::NetBSD => "🚩 ",
+            Type::NixOS => "❄️ ",
+            Type::OpenBSD => "🐡 ",
+            Type::openSUSE => "🦎 ",
+            Type::OracleLinux => "🦴 ",
+            Type::Pop => "🍭 ",
+            Type::Raspbian => "🍓 ",
+            Type::Redhat => "🎩 ",
+            Type::RedHatEnterprise => "🎩 ",
+            Type::Redox => "🧪 ",
+            Type::Solus => "⛵ ",
+            Type::SUSE => "🦎 ",
+            Type::Ubuntu => "🎯 ",
+            Type::Unknown => "❓ ",
+            Type::Windows => "🪟 ",
+            _ => "",
+        };
+    }
+}