diff --git a/exercises/practice/isogram/.meta/test_template.tera b/exercises/practice/isogram/.meta/test_template.tera
new file mode 100644
index 000000000..51bd452ba
--- /dev/null
+++ b/exercises/practice/isogram/.meta/test_template.tera
@@ -0,0 +1,13 @@
+use isogram::*;
+
+{% for test in cases %}
+#[test]
+#[ignore]
+fn {{ test.description | snake_case }}() {
+    {% if test.expected %}
+        assert!(check({{ test.input.phrase | json_encode() }}));
+    {% else %}
+        assert!(!check({{ test.input.phrase | json_encode() }}));
+    {% endif %}
+}
+{% endfor -%}
diff --git a/exercises/practice/isogram/.meta/tests.toml b/exercises/practice/isogram/.meta/tests.toml
index cf1f7ea7d..ba04c6645 100644
--- a/exercises/practice/isogram/.meta/tests.toml
+++ b/exercises/practice/isogram/.meta/tests.toml
@@ -1,15 +1,52 @@
-# This is an auto-generated file. Regular comments will be removed when this
-# file is regenerated. Regenerating will not touch any manually added keys,
-# so comments can be added in a "comment" key.
+# 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.
 
 [a0e97d2d-669e-47c7-8134-518a1e2c4555]
 description = "empty string"
 
+[9a001b50-f194-4143-bc29-2af5ec1ef652]
+description = "isogram with only lower case characters"
+
+[8ddb0ca3-276e-4f8b-89da-d95d5bae78a4]
+description = "word with one duplicated character"
+
+[6450b333-cbc2-4b24-a723-0b459b34fe18]
+description = "word with one duplicated character from the end of the alphabet"
+
 [a15ff557-dd04-4764-99e7-02cc1a385863]
 description = "longest reported english isogram"
 
+[f1a7f6c7-a42f-4915-91d7-35b2ea11c92e]
+description = "word with duplicated character in mixed case"
+
+[14a4f3c1-3b47-4695-b645-53d328298942]
+description = "word with duplicated character in mixed case, lowercase first"
+
+[423b850c-7090-4a8a-b057-97f1cadd7c42]
+description = "hypothetical isogrammic word with hyphen"
+
+[93dbeaa0-3c5a-45c2-8b25-428b8eacd4f2]
+description = "hypothetical word with duplicated character following hyphen"
+
 [36b30e5c-173f-49c6-a515-93a3e825553f]
 description = "isogram with duplicated hyphen"
 
+[cdabafa0-c9f4-4c1f-b142-689c6ee17d93]
+description = "made-up name that is an isogram"
+
 [5fc61048-d74e-48fd-bc34-abfc21552d4d]
 description = "duplicated character in the middle"
+
+[310ac53d-8932-47bc-bbb4-b2b94f25a83e]
+description = "same first and last characters"
+
+[0d0b8644-0a1e-4a31-a432-2b3ee270d847]
+description = "word with duplicated character and with two hyphens"
diff --git a/exercises/practice/isogram/tests/isogram.rs b/exercises/practice/isogram/tests/isogram.rs
index b0c6a2d21..29ee0e0b3 100644
--- a/exercises/practice/isogram/tests/isogram.rs
+++ b/exercises/practice/isogram/tests/isogram.rs
@@ -1,75 +1,84 @@
-use isogram::check;
+use isogram::*;
 
 #[test]
 fn empty_string() {
-    assert!(check(""), "An empty string should be an isogram.")
+    assert!(check(""));
 }
 
 #[test]
 #[ignore]
-fn only_lower_case_characters() {
-    assert!(check("isogram"), "\"isogram\" should be an isogram.")
+fn isogram_with_only_lower_case_characters() {
+    assert!(check("isogram"));
 }
 
 #[test]
 #[ignore]
-fn one_duplicated_character() {
-    assert!(
-        !check("eleven"),
-        "\"eleven\" has more than one \'e\', therefore it is no isogram."
-    )
+fn word_with_one_duplicated_character() {
+    assert!(!check("eleven"));
+}
+
+#[test]
+#[ignore]
+fn word_with_one_duplicated_character_from_the_end_of_the_alphabet() {
+    assert!(!check("zzyzx"));
 }
 
 #[test]
 #[ignore]
 fn longest_reported_english_isogram() {
-    assert!(
-        check("subdermatoglyphic"),
-        "\"subdermatoglyphic\" should be an isogram."
-    )
+    assert!(check("subdermatoglyphic"));
+}
+
+#[test]
+#[ignore]
+fn word_with_duplicated_character_in_mixed_case() {
+    assert!(!check("Alphabet"));
+}
+
+#[test]
+#[ignore]
+fn word_with_duplicated_character_in_mixed_case_lowercase_first() {
+    assert!(!check("alphAbet"));
 }
 
 #[test]
 #[ignore]
-fn one_duplicated_character_mixed_case() {
-    assert!(
-        !check("Alphabet"),
-        "\"Alphabet\" has more than one \'a\', therefore it is no isogram."
-    )
+fn hypothetical_isogrammic_word_with_hyphen() {
+    assert!(check("thumbscrew-japingly"));
 }
 
 #[test]
 #[ignore]
-fn hypothetical_isogramic_word_with_hyphen() {
-    assert!(
-        check("thumbscrew-japingly"),
-        "\"thumbscrew-japingly\" should be an isogram."
-    )
+fn hypothetical_word_with_duplicated_character_following_hyphen() {
+    assert!(!check("thumbscrew-jappingly"));
 }
 
 #[test]
 #[ignore]
 fn isogram_with_duplicated_hyphen() {
-    assert!(
-        check("six-year-old"),
-        "\"six-year-old\" should be an isogram."
-    )
+    assert!(check("six-year-old"));
 }
 
 #[test]
 #[ignore]
 fn made_up_name_that_is_an_isogram() {
-    assert!(
-        check("Emily Jung Schwartzkopf"),
-        "\"Emily Jung Schwartzkopf\" should be an isogram."
-    )
+    assert!(check("Emily Jung Schwartzkopf"));
 }
 
 #[test]
 #[ignore]
 fn duplicated_character_in_the_middle() {
-    assert!(
-        !check("accentor"),
-        "\"accentor\" has more than one \'c\', therefore it is no isogram."
-    )
+    assert!(!check("accentor"));
+}
+
+#[test]
+#[ignore]
+fn same_first_and_last_characters() {
+    assert!(!check("angola"));
+}
+
+#[test]
+#[ignore]
+fn word_with_duplicated_character_and_with_two_hyphens() {
+    assert!(!check("up-to-date"));
 }