1 files changed, 192 insertions, 0 deletions
diff --git a/third_party/rust/unic-langid-impl/tests/language_identifier_test.rs b/third_party/rust/unic-langid-impl/tests/language_identifier_test.rs
new file mode 100644
index 0000000000..79b81fb4fb
--- /dev/null
+++ b/third_party/rust/unic-langid-impl/tests/language_identifier_test.rs
@@ -0,0 +1,192 @@
+use unic_langid_impl::parser::parse_language_identifier;
+use unic_langid_impl::subtags;
+use unic_langid_impl::CharacterDirection;
+use unic_langid_impl::LanguageIdentifier;
+
+fn assert_language_identifier(
+    loc: &LanguageIdentifier,
+    language: Option<&str>,
+    script: Option<&str>,
+    region: Option<&str>,
+    variants: Option<&[&str]>,
+) {
+    assert_eq!(
+        loc.language,
+        language.map_or(subtags::Language::default(), |l| {
+            subtags::Language::from_bytes(l.as_bytes()).unwrap()
+        })
+    );
+    assert_eq!(loc.script, script.map(|s| s.parse().unwrap()));
+    assert_eq!(loc.region, region.map(|r| r.parse().unwrap()));
+    let v = variants
+        .unwrap_or(&[])
+        .iter()
+        .map(|v| -> subtags::Variant { v.parse().unwrap() })
+        .collect::<Vec<_>>();
+    assert_eq!(
+        loc.variants().collect::<Vec<_>>(),
+        v.iter().collect::<Vec<_>>(),
+    );
+}
+
+fn assert_parsed_language_identifier(
+    input: &str,
+    language: Option<&str>,
+    script: Option<&str>,
+    region: Option<&str>,
+    variants: Option<&[&str]>,
+) {
+    let langid = parse_language_identifier(input.as_bytes()).unwrap();
+    assert_language_identifier(&langid, language, script, region, variants);
+}
+
+#[test]
+fn test_language_identifier_parser() {
+    assert_parsed_language_identifier("pl", Some("pl"), None, None, None);
+    assert_parsed_language_identifier("und", None, None, None, None);
+    assert_parsed_language_identifier("en-US", Some("en"), None, Some("US"), None);
+    assert_parsed_language_identifier("en-Latn-US", Some("en"), Some("Latn"), Some("US"), None);
+    assert_parsed_language_identifier("sl-nedis", Some("sl"), None, None, Some(&["nedis"]));
+}
+
+#[test]
+fn test_language_casing() {
+    assert_parsed_language_identifier("Pl", Some("pl"), None, None, None);
+    assert_parsed_language_identifier("En-uS", Some("en"), None, Some("US"), None);
+    assert_parsed_language_identifier("eN-lAtN-uS", Some("en"), Some("Latn"), Some("US"), None);
+    assert_parsed_language_identifier("ZH_cyrl_hN", Some("zh"), Some("Cyrl"), Some("HN"), None);
+}
+
+#[test]
+fn test_serialize_langid() {
+    let langid: LanguageIdentifier = "en-Latn-US".parse().unwrap();
+    assert_eq!(&langid.to_string(), "en-Latn-US");
+}
+
+#[test]
+fn test_sorted_variants() {
+    let langid: LanguageIdentifier = "en-nedis-macos".parse().unwrap();
+    assert_eq!(&langid.to_string(), "en-macos-nedis");
+
+    let langid = LanguageIdentifier::from_parts(
+        "en".parse().unwrap(),
+        None,
+        None,
+        &["nedis".parse().unwrap(), "macos".parse().unwrap()],
+    );
+    assert_eq!(&langid.to_string(), "en-macos-nedis");
+}
+
+#[test]
+fn test_from_parts_unchecked() {
+    let langid: LanguageIdentifier = "en-nedis-macos".parse().unwrap();
+    let (lang, script, region, variants) = langid.into_parts();
+    let langid = LanguageIdentifier::from_raw_parts_unchecked(
+        lang,
+        script,
+        region,
+        Some(variants.into_boxed_slice()),
+    );
+    assert_eq!(&langid.to_string(), "en-macos-nedis");
+}
+
+#[test]
+fn test_matches() {
+    let langid_en: LanguageIdentifier = "en".parse().unwrap();
+    let langid_en_us: LanguageIdentifier = "en-US".parse().unwrap();
+    let langid_en_us2: LanguageIdentifier = "en-US".parse().unwrap();
+    let langid_pl: LanguageIdentifier = "pl".parse().unwrap();
+    assert_eq!(langid_en.matches(&langid_en_us, false, false), false);
+    assert_eq!(langid_en_us.matches(&langid_en_us2, false, false), true);
+    assert_eq!(langid_en.matches(&langid_pl, false, false), false);
+    assert_eq!(langid_en.matches(&langid_en_us, true, false), true);
+}
+
+#[test]
+fn test_set_fields() {
+    let mut langid = LanguageIdentifier::default();
+    assert_eq!(&langid.to_string(), "und");
+
+    langid.language = "pl".parse().expect("Setting language failed");
+    assert_eq!(&langid.to_string(), "pl");
+
+    langid.language = "de".parse().expect("Setting language failed");
+    assert_eq!(&langid.to_string(), "de");
+    langid.region = Some("AT".parse().expect("Setting region failed"));
+    assert_eq!(&langid.to_string(), "de-AT");
+    langid.script = Some("Latn".parse().expect("Setting script failed"));
+    assert_eq!(&langid.to_string(), "de-Latn-AT");
+    langid.set_variants(&["macos".parse().expect("Setting variants failed")]);
+    assert_eq!(&langid.to_string(), "de-Latn-AT-macos");
+
+    assert_eq!(langid.has_variant("macos".parse().unwrap()), true);
+    assert_eq!(langid.has_variant("windows".parse().unwrap()), false);
+
+    langid.language.clear();
+    assert_eq!(&langid.to_string(), "und-Latn-AT-macos");
+    langid.region = None;
+    assert_eq!(&langid.to_string(), "und-Latn-macos");
+    langid.script = None;
+    assert_eq!(&langid.to_string(), "und-macos");
+    langid.clear_variants();
+    assert_eq!(&langid.to_string(), "und");
+
+    assert_eq!(langid.has_variant("macos".parse().unwrap()), false);
+}
+
+#[test]
+fn test_matches_as_range() {
+    let langid: LanguageIdentifier = "en-US".parse().unwrap();
+    let langid2: LanguageIdentifier = "en-US-windows".parse().unwrap();
+    assert_eq!(langid.matches(&langid2, false, false), false);
+    assert_eq!(langid.matches(&langid2, true, false), true);
+    assert_eq!(langid.matches(&langid2, false, true), false);
+    assert_eq!(langid.matches(&langid2, true, true), true);
+}
+
+#[test]
+fn test_character_direction() {
+    let langid: LanguageIdentifier = "en-US".parse().unwrap();
+    let langid2: LanguageIdentifier = "ar-AF".parse().unwrap();
+    assert_eq!(langid.character_direction(), CharacterDirection::LTR);
+    assert_eq!(langid2.character_direction(), CharacterDirection::RTL);
+}
+
+#[test]
+fn test_langid_ord() {
+    let input = &[
+        "en-US-macos-zarab",
+        "en-US-macos-nedis",
+        "en-US-macos",
+        "en-GB",
+        "en",
+        "en-US",
+        "ar",
+        "fr",
+        "de",
+    ];
+
+    let mut langids = input
+        .iter()
+        .map(|l| -> LanguageIdentifier { l.parse().unwrap() })
+        .collect::<Vec<_>>();
+
+    langids.sort();
+
+    let result = langids.iter().map(|l| l.to_string()).collect::<Vec<_>>();
+
+    assert_eq!(
+        &result,
+        &[
+            "ar",
+            "de",
+            "en",
+            "en-GB",
+            "en-US",
+            "en-US-macos",
+            "en-US-macos-nedis",
+            "en-US-macos-zarab",
+            "fr"
+        ]
+    );
+}