Remove the index from the test case loop; simplify the cases object

bin/generate_tests

@@ -119,7 +119,7 @@ def generate(specs: pathlib.Path, exercise: pathlib.Path) -> None:
         """
     ).strip()
     data = {
-        "cases": list(enumerate(cases)),
+        "cases": cases,
         "header": header,
         "solution": json.loads((exercise / ".meta/config.json").read_text())["files"]["solution"][0]
     }

exercises/practice/acronym/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} "{{ case["input"]["phrase"] }}"
   assert_success
   assert_output "{{ case["expected"] }}"

exercises/practice/affine-cipher/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} {{ case["property"] }} {{ case["input"]["key"]["a"] }} {{ case["input"]["key"]["b"] }} "{{ case["input"]["phrase"] }}"
 {%- if case["expect_error"] %}
   assert_failure

exercises/practice/all-your-base/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test '{{ case["description"] }}' {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash {{ solution }} {{ case["input"]["inputBase"] }} "{{ case["input"]["digits"] | join(" ") }}" {{ case["input"]["outputBase"] }}
 {%- if case["expect_error"] %}
     assert_failure

exercises/practice/allergies/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test {{ case["descriptions"] | join(":") | quote }} {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
 {%- if case["property"] == "allergicTo" %}
     run bash {{ solution }} {{ case["input"]["score"] }} allergic_to {{ case["input"]["item"] }}
 

exercises/practice/anagram/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} "{{ case["input"]["subject"] }}" "{{ case["input"]["candidates"] | join(" ") }}"
   assert_success
 {%- if case["expected"] | length == 0 %}

exercises/practice/armstrong-numbers/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test '{{ case["description"] }}' {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} {{ case["input"]["number"] }}
   assert_success
   assert_output "{{ case["expected"] }}"

exercises/practice/atbash-cipher/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} {{ case["property"] }} "{{ case["input"]["phrase"] }}"
   assert_success
   assert_output "{{ case["expected"] }}"

exercises/practice/binary-search/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
 {%- if case["expect_error"] %}
     expected="-1"
 {%- else %}

exercises/practice/bob/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} ${{ case["input"]["heyBob"] | repr }}
   assert_success
   assert_output "{{ case["expected"] }}"

exercises/practice/bottle-song/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test '{{ case["description"] }}' {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     expected="\
 {{ case["expected"] | join("\n") }}"
     run bash {{ solution }} {{ case["input"]["startBottles"] }} {{ case["input"]["takeDown"] }}

exercises/practice/bowling/.meta/template.j2

@@ -4,9 +4,9 @@
 # shell script. We'll just pass in all the individual rolls
 # and expect the score (or error) as output.
 
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
 {%- set args = [solution] + case["input"]["previousRolls"] %}
 {%- if case["property"] == "roll" %}{%- set args = args + [case["input"]["roll"]] %}{%- endif %}
     run bash {{ args | join(" ") }}

exercises/practice/change/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
 {%- if case["expect_error"] %}
     expected="{{ case["expect_error_msg"] }}"
 {%- else %}

exercises/practice/clock/.meta/template.j2

@@ -16,9 +16,9 @@
 #
 # The clock script will output the clock value in %H:%M format
 
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
 {%- if case["property"] == "create" %}
     run bash {{ solution }} {{ case["input"]["hour"] }} {{ case["input"]["minute"] }}
 {%- elif case["property"] == "add" %}

exercises/practice/collatz-conjecture/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} {{ case["input"]["number"] }}
 {%- if case["expect_error"] %}
   assert_failure

exercises/practice/crypto-square/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash {{ solution }} "{{ case["input"]["plaintext"] }}"
     assert_success
     assert_output "{{ case["expected"] }}"

exercises/practice/darts/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash {{ solution }} {{ case["input"]["x"] }} {{ case["input"]["y"] }}
     assert_success
     assert_output "{{ case["expected"] }}"

exercises/practice/diamond/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   expected="$(cat << EOT
 {{ case["expected"] | join("\n") }}
 EOT

exercises/practice/difference-of-squares/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} {{
     case["property"] | camel_to_snake | replace("difference_of_squares", "difference")
   }} {{ case["input"]["number"] }}

exercises/practice/dnd-character/.meta/template.j2

@@ -8,10 +8,10 @@
 
 
 # ability modifier
-{% for idx, case in cases %}
+{% for case in cases %}
 {%- if case["property"] == "modifier" %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash {{ solution }} {{ case["property"] }} {{ case["input"]["score"] }}
     assert_success
     assert_output "{{ case["expected"] }}"

exercises/practice/dnd-character/dnd_character.bats

@@ -1,8 +1,7 @@
 #!/usr/bin/env bats
 load bats-extra
 
-# generated on 2026-06-29T18:26:21+00:00
-# local version: 2.0.0.0
+# generated on 2026-08-13T17:30:08+00:00
 
 # usage: dnd_character.sh modifier n
 # -> output expected modifier

exercises/practice/eliuds-eggs/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash {{ solution }} {{ case["input"]["number"] }}
     assert_success
     assert_output {{ case["expected"] }}

exercises/practice/flower-field/.meta/template.j2

@@ -4,9 +4,9 @@ join() {
     local IFS=$'\n'
     echo "$*"
 }
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     input=({% for line in case["input"]["garden"] %}
         "{{ line }}"
         {%- endfor %}

exercises/practice/food-chain/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test '{{ case["description"] }}' {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     expected="{{ case["expected"] | join("\n") }}"
     run bash {{ solution }} {{ case["input"]["startVerse"] }} {{ case["input"]["endVerse"] }}
     assert_success

exercises/practice/forth/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["descriptions"] | join(": ") }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash {{ solution }} <<END
 {{ case["input"]["instructions"] | join("\n") }}
 END

exercises/practice/game-of-life/.meta/template.j2

@@ -3,9 +3,9 @@ join() {
     local IFS=$'\n'
     echo "$*"
 }
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     input=(
 {%- for row in case["input"]["matrix"] %}
         "{{ row | join("") }}"

exercises/practice/gigasecond/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test '{{ case["description"] }}' {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} '{{ case["input"]["moment"] }}'
 
   assert_success

exercises/practice/grains/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
 {%- if case["property"] == "total" %}
   run bash {{ solution }} total
 {%- else %}

exercises/practice/hamming/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test '{{ case["description"] }}' {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} '{{ case["input"]["strand1"] }}' '{{ case["input"]["strand2"] }}'
 {%- if case["expect_error"] %}
   assert_failure

exercises/practice/hello-world/.meta/template.j2

@@ -1,5 +1,5 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
   run bash {{ solution }}
 

exercises/practice/house/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     expected=$(cat <<END
 {{ case["expected"] | join("\n") }}
 END

exercises/practice/intergalactic-transmission/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["descriptions"] | join(": ") }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash {{ solution }} {{ case["property"]  | camel_to_snake }} "{{ case["input"]["message"] | join(" ") }}"
     assert_success
 {%- if case["expect_error"] %}

exercises/practice/isbn-verifier/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test '{{ case["description"] }}' {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} '{{ case["input"]["isbn"] }}'
   assert_success
   assert_output "{{ case["expected"] }}"

exercises/practice/isogram/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test '{{ case["description"] }}' {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} '{{ case["input"]["phrase"] }}'
   assert_success
   assert_output "{{ case["expected"] }}"

exercises/practice/kindergarten-garden/.meta/template.j2

@@ -2,9 +2,9 @@
 
 # Note: using ANSI-C Quoting here
 # see https://www.gnu.org/software/bash/manual/bash.html#ANSI_002dC-Quoting
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash {{ solution }} ${{ case["input"]["diagram"] | repr }} "{{ case["input"]["student"] }}"
     assert_success
     assert_output "{{ case["expected"] | join(" ") }}"

exercises/practice/knapsack/.meta/template.j2

@@ -7,9 +7,9 @@
 # should return:
 #       90
 #
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash {{ solution }} {{ case["input"]["maximumWeight"] }} {%- for item in case["input"]["items"] %} {{ item["weight"] }}:{{ item["value"] }}{%- endfor %}
     assert_success
     assert_output "{{ case["expected"] }}"

exercises/practice/largest-series-product/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test "{{ case["description"] }}" {
-    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash {{ solution }} "{{ case["input"]["digits"] }}" "{{ case["input"]["span"] }}"
 {%- if case["expect_error"] %}
     expected="{{ case["expect_error_msg"] }}"

exercises/practice/leap/.meta/template.j2

@@ -1,7 +1,7 @@
 {{ header }}
-{% for idx, case in cases %}
+{% for case in cases %}
 @test '{{ case["description"] }}' {
-  {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+  {% if loop.first %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
   run bash {{ solution }} {{ case["input"]["year"] }}
 
   assert_success