[perfect-numbers] Add a Jinja test template (#853)

Author: IsaacG

exercises/practice/perfect-numbers/.meta/example.sh

@@ -29,7 +29,7 @@ aliquot_sum() {
 declare -i num=$1
 
 if ((num <= 0)); then
-    echo "Classification is only possible for natural numbers." >&2
+    echo "Classification is only possible for positive integers." >&2
     exit 1
 fi
 

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

@@ -0,0 +1,14 @@
+{{ header }}
+{% for idx, case in cases %}
+@test "{{ case["description"] }}" {
+    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash {{ solution }} {{ case["input"]["number"] }}
+{%- if case["expect_error"] %}
+    assert_failure
+    assert_output "{{ case["expect_error_msg"] }}"
+{%- else %}
+    assert_success
+    assert_output "{{ case["expected"] }}"
+{%- endif %}
+}
+{% endfor %}

exercises/practice/perfect-numbers/perfect_numbers.bats

@@ -1,12 +1,11 @@
 #!/usr/bin/env bats
 load bats-extra
 
-# local version: 1.1.0.0
-
-# "Perfect numbers"
+# generated on 2026-06-29T05:05:58+00:00
+# local version: 2.0.0.0
 
 @test "Smallest perfect number is classified correctly" {
-    #[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    # [[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash perfect_numbers.sh 6
     assert_success
     assert_output "perfect"
@@ -26,8 +25,6 @@ load bats-extra
     assert_output "perfect"
 }
 
-# "Abundant numbers"
-
 @test "Smallest abundant number is classified correctly" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash perfect_numbers.sh 12
@@ -56,8 +53,6 @@ load bats-extra
     assert_output "abundant"
 }
 
-# "Deficient numbers"
-
 @test "Smallest prime deficient number is classified correctly" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash perfect_numbers.sh 2
@@ -93,18 +88,16 @@ load bats-extra
     assert_output "deficient"
 }
 
-# "Invalid inputs"
-
-@test "Zero is rejected (not a natural number)" {
+@test "Zero is rejected (as it is not a positive integer)" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash perfect_numbers.sh 0
     assert_failure
-    assert_output "Classification is only possible for natural numbers."
+    assert_output "Classification is only possible for positive integers."
 }
 
-@test "Negative integer is rejected (not a natural number)" {
+@test "Negative integer is rejected (as it is not a positive integer)" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
     run bash perfect_numbers.sh -1
     assert_failure
-    assert_output "Classification is only possible for natural numbers."
+    assert_output "Classification is only possible for positive integers."
 }