init v.1.0.0

Co-authored-by: Copilot <copilot@github.com>

crates/adapters/assets/tests/config_path.rs

@@ -0,0 +1,117 @@
+mod common;
+
+use assets::{Platform, config_path};
+use common::{env_of, path};
+
+#[test]
+fn xdg_prefers_config_home() {
+    let env = env_of(&[("XDG_CONFIG_HOME", "/xdg"), ("HOME", "/home/user")]);
+
+    assert_eq!(
+        config_path(Platform::Xdg, env),
+        path("/xdg/dvd-thing/logo.png")
+    );
+}
+
+#[test]
+fn xdg_falls_back_to_home_dot_config() {
+    let env = env_of(&[("HOME", "/home/user")]);
+
+    assert_eq!(
+        config_path(Platform::Xdg, env),
+        path("/home/user/.config/dvd-thing/logo.png")
+    );
+}
+
+#[test]
+fn xdg_ignores_a_relative_config_home() {
+    let env = env_of(&[("XDG_CONFIG_HOME", "relative/dir"), ("HOME", "/home/user")]);
+
+    assert_eq!(
+        config_path(Platform::Xdg, env),
+        path("/home/user/.config/dvd-thing/logo.png")
+    );
+}
+
+#[test]
+fn macos_uses_application_support() {
+    let env = env_of(&[("HOME", "/Users/gabriel")]);
+
+    assert_eq!(
+        config_path(Platform::MacOs, env),
+        path("/Users/gabriel/Library/Application Support/dvd-thing/logo.png")
+    );
+}
+
+#[test]
+fn macos_still_honours_an_explicit_xdg_config_home() {
+    let env = env_of(&[("XDG_CONFIG_HOME", "/Users/gabriel/.config")]);
+
+    assert_eq!(
+        config_path(Platform::MacOs, env),
+        path("/Users/gabriel/.config/dvd-thing/logo.png")
+    );
+}
+
+#[test]
+fn windows_prefers_appdata() {
+    let env = env_of(&[
+        ("APPDATA", r"C:\Users\gabriel\AppData\Roaming"),
+        ("USERPROFILE", r"C:\Users\gabriel"),
+    ]);
+
+    assert_eq!(
+        config_path(Platform::Windows, env),
+        path(r"C:\Users\gabriel\AppData\Roaming/dvd-thing/logo.png")
+    );
+}
+
+#[test]
+fn windows_falls_back_to_user_profile() {
+    let env = env_of(&[("USERPROFILE", r"C:\Users\gabriel")]);
+
+    assert_eq!(
+        config_path(Platform::Windows, env),
+        path(r"C:\Users\gabriel/AppData/Roaming/dvd-thing/logo.png")
+    );
+}
+
+#[test]
+fn windows_ignores_unix_variables() {
+    let env = env_of(&[("HOME", "/home/user"), ("XDG_CONFIG_HOME", "/xdg")]);
+
+    assert_eq!(config_path(Platform::Windows, env), None);
+}
+
+#[test]
+fn an_empty_environment_yields_no_path() {
+    for platform in [Platform::Xdg, Platform::MacOs, Platform::Windows] {
+        assert_eq!(config_path(platform, env_of(&[])), None);
+    }
+}
+
+#[test]
+fn an_empty_variable_counts_as_unset() {
+    let env = env_of(&[("XDG_CONFIG_HOME", ""), ("HOME", "/home/user")]);
+
+    assert_eq!(
+        config_path(Platform::Xdg, env),
+        path("/home/user/.config/dvd-thing/logo.png")
+    );
+}
+
+#[test]
+fn an_empty_home_does_not_produce_a_relative_path() {
+    assert_eq!(config_path(Platform::Xdg, env_of(&[("HOME", "")])), None);
+    assert_eq!(config_path(Platform::MacOs, env_of(&[("HOME", "")])), None);
+}
+
+#[test]
+fn an_empty_appdata_falls_back_to_user_profile() {
+    let env = env_of(&[("APPDATA", ""), ("USERPROFILE", r"C:\Users\gabriel")]);
+
+    assert_eq!(
+        config_path(Platform::Windows, env),
+        path(r"C:\Users\gabriel/AppData/Roaming/dvd-thing/logo.png")
+    );
+}