parallel-letter-frequency: Sync tests & add missing

exercises/practice/parallel-letter-frequency/.meta/tests.toml

@@ -0,0 +1,49 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[c054d642-c1fa-4234-8007-9339f2337886]
+description = "no texts"
+
+[818031be-49dc-4675-b2f9-c4047f638a2a]
+description = "one text with one letter"
+
+[c0b81d1b-940d-4cea-9f49-8445c69c17ae]
+description = "one text with multiple letters"
+
+[708ff1e0-f14a-43fd-adb5-e76750dcf108]
+description = "two texts with one letter"
+
+[1b5c28bb-4619-4c9d-8db9-a4bb9c3bdca0]
+description = "two texts with multiple letters"
+
+[6366e2b8-b84c-4334-a047-03a00a656d63]
+description = "ignore letter casing"
+
+[92ebcbb0-9181-4421-a784-f6f5aa79f75b]
+description = "ignore whitespace"
+
+[bc5f4203-00ce-4acc-a5fa-f7b865376fd9]
+description = "ignore punctuation"
+
+[68032b8b-346b-4389-a380-e397618f6831]
+description = "ignore numbers"
+
+[aa9f97ac-3961-4af1-88e7-6efed1bfddfd]
+description = "Unicode letters"
+
+[7b1da046-701b-41fc-813e-dcfb5ee51813]
+description = "combination of lower- and uppercase letters, punctuation and white space"
+
+[4727f020-df62-4dcf-99b2-a6e58319cb4f]
+description = "large texts"
+
+[adf8e57b-8e54-4483-b6b8-8b32c115884c]
+description = "many small texts"

exercises/practice/parallel-letter-frequency/tests/parallel_letter_frequency.rs

@@ -45,12 +45,41 @@ fn no_texts() {
 
 #[test]
 #[ignore]
-fn one_letter() {
+fn one_text_one_letter() {
     let mut hm = HashMap::new();
     hm.insert('a', 1);
     assert_eq!(frequency::frequency(&["a"], 4), hm);
 }
 
+#[test]
+#[ignore]
+fn one_text_multiple_letters() {
+    let mut hm = HashMap::new();
+    hm.insert('b', 2);
+    hm.insert('c', 3);
+    hm.insert('d', 1);
+    assert_eq!(frequency::frequency(&["bbcccd"], 4), hm);
+}
+
+#[test]
+#[ignore]
+fn two_texts_with_one_letter() {
+    let mut hm = HashMap::new();
+    hm.insert('e', 1);
+    hm.insert('f', 1);
+    assert_eq!(frequency::frequency(&["e", "f"], 4), hm);
+}
+
+#[test]
+#[ignore]
+fn two_texts_with_multiple_letters() {
+    let mut hm = HashMap::new();
+    hm.insert('g', 2);
+    hm.insert('h', 3);
+    hm.insert('h', 1);
+    assert_eq!(frequency::frequency(&["ggh", "hhi"], 4), hm);
+}
+
 #[test]
 #[ignore]
 fn case_insensitivity() {