initial commit - enclose, joinstem, bysize

and tests

tests/inflect_tests.rs

@@ -0,0 +1,37 @@
+use inflect::*;
+
+#[test]
+fn test_enclose() {
+    assert_eq!(enclose("foo"), "(?:foo)");
+}
+
+#[test]
+fn test_joinstem() {
+    assert_eq!(
+        joinstem(Some(-2), Some(vec!["ephemeris", "iris", ".*itis"])),
+        "(?:ephemer|ir|.*it)"
+    );
+    assert_eq!(joinstem(None, Some(vec!["ephemeris"])), "(?:ephemeris)");
+    assert_eq!(joinstem(Some(5), None), "(?:)");
+    assert_eq!(joinstem(None, None), "(?:)");
+}
+
+#[test]
+fn test_bysize() {
+    let words = vec!["ant", "cat", "dog", "pig", "frog", "goat", "horse", "elephant"];
+    let result = bysize(words);
+    if let Some(set) = result.get(&3) {
+        let mut sorted_words: Vec<&String> = set.iter().collect();
+        sorted_words.sort();
+        assert_eq!(sorted_words, vec!["ant", "cat", "dog", "pig"]);
+    }
+    if let Some(set) = result.get(&4) {
+        let mut sorted_words: Vec<&String> = set.iter().collect();
+        sorted_words.sort();
+        assert_eq!(sorted_words, vec!["frog", "goat"]);
+    }
+    if let Some(set) = result.get(&5) {
+        let sorted_words: Vec<&String> = set.iter().collect();
+        assert_eq!(sorted_words, vec!["horse"]);
+    }
+}