[largest-series-product] Add a Jinja test template (#804)

Author: IsaacG

exercises/practice/largest-series-product/.meta/example.sh

@@ -7,7 +7,7 @@ die() { echo "$*" >&2; exit 1; }
 
 nondig="*[^[:digit:]]*"   # contains a non-digit
 
-[[ $series == $nondig ]]  && die "input must only contain digits"       # pattern is unquoted
+[[ $series == $nondig ]]  && die "digits input must only contain digits" # pattern is unquoted
 (( span > ${#series} ))   && die "span must not exceed string length"
 (( span < 0 ))            && die "span must not be negative"
 

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

@@ -0,0 +1,16 @@
+{{ header }}
+{% for idx, case in cases %}
+@test "{{ case["description"] }}" {
+    {% if idx == 0 %}# {% endif %}[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash {{ solution }} "{{ case["input"]["digits"] }}" "{{ case["input"]["span"] }}"
+{%- if case["expect_error"] %}
+    expected="{{ case["expect_error_msg"] }}"
+    assert_failure
+    assert_output --partial "$expected"
+{%- else %}
+    expected={{ case["expected"] }}
+    assert_success
+    assert_output "$expected"
+{%- endif %}
+}
+{% endfor %}

exercises/practice/largest-series-product/largest_series_product.bats

@@ -1,110 +1,108 @@
 #!/usr/bin/env bats
 load bats-extra
 
-# local version: 1.2.0.0
-
+# generated on 2026-06-28T21:57:09+00:00
+# local version: 2.0.0.0
 
 @test "finds the largest product if span equals length" {
-    #[[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 29 2
+    # [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash largest_series_product.sh "29" "2"
     expected=18
     assert_success
     assert_output "$expected"
 }
 
 @test "can find the largest product of 2 with numbers in order" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 0123456789 2
+    run bash largest_series_product.sh "0123456789" "2"
     expected=72
     assert_success
     assert_output "$expected"
 }
 
 @test "can find the largest product of 2" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 576802143 2
+    run bash largest_series_product.sh "576802143" "2"
     expected=48
     assert_success
     assert_output "$expected"
 }
 
 @test "can find the largest product of 3 with numbers in order" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 0123456789 3
+    run bash largest_series_product.sh "0123456789" "3"
     expected=504
     assert_success
     assert_output "$expected"
 }
 
 @test "can find the largest product of 3" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 1027839564 3
+    run bash largest_series_product.sh "1027839564" "3"
     expected=270
     assert_success
     assert_output "$expected"
 }
 
 @test "can find the largest product of 5 with numbers in order" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 0123456789 5
+    run bash largest_series_product.sh "0123456789" "5"
     expected=15120
     assert_success
     assert_output "$expected"
 }
 
 @test "can get the largest product of a big number" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 73167176531330624919225119674426574742355349194934 6
+    run bash largest_series_product.sh "73167176531330624919225119674426574742355349194934" "6"
     expected=23520
     assert_success
     assert_output "$expected"
 }
 
 @test "reports zero if the only digits are zero" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 0000 2
+    run bash largest_series_product.sh "0000" "2"
     expected=0
     assert_success
     assert_output "$expected"
 }
 
 @test "reports zero if all spans include zero" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 99099 3
+    run bash largest_series_product.sh "99099" "3"
     expected=0
     assert_success
     assert_output "$expected"
 }
 
-# error cases
-
 @test "rejects span longer than string length" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 123 4
+    run bash largest_series_product.sh "123" "4"
     expected="span must not exceed string length"
     assert_failure
     assert_output --partial "$expected"
 }
 
 @test "rejects empty string and nonzero span" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh "" 1
+    run bash largest_series_product.sh "" "1"
     expected="span must not exceed string length"
     assert_failure
     assert_output --partial "$expected"
 }
 
 @test "rejects invalid character in digits" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 1234a5 2
-    expected="input must only contain digits"
+    run bash largest_series_product.sh "1234a5" "2"
+    expected="digits input must only contain digits"
     assert_failure
     assert_output --partial "$expected"
 }
 
 @test "rejects negative span" {
     [[ $BATS_RUN_SKIPPED == "true" ]] || skip
-    run bash largest_series_product.sh 12345 -1
+    run bash largest_series_product.sh "12345" "-1"
     expected="span must not be negative"
     assert_failure
     assert_output --partial "$expected"