Sync largest-series-product (#833)

Author: tomasnorre

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

@@ -1,27 +1,5 @@
 <?php
 
-/*
- * By adding type hints and enabling strict type checking, code can become
- * easier to read, self-documenting and reduce the number of potential bugs.
- * By default, type declarations are non-strict, which means they will attempt
- * to change the original type to match the type specified by the
- * type-declaration.
- *
- * In other words, if you pass a string to a function requiring a float,
- * it will attempt to convert the string value to a float.
- *
- * To enable strict mode, a single declare directive must be placed at the top
- * of the file.
- * This means that the strictness of typing is configured on a per-file basis.
- * This directive not only affects the type declarations of parameters, but also
- * a function's return type.
- *
- * For more info review the Concept on strict type checking in the PHP track
- * <link>.
- *
- * To disable strict typing, comment out the directive below.
- */
-
 declare(strict_types=1);
 
 class Series

exercises/practice/largest-series-product/.meta/tests.toml

@@ -1,6 +1,13 @@
-# 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.
 
 [7c82f8b7-e347-48ee-8a22-f672323324d4]
 description = "finds the largest product if span equals length"
@@ -48,3 +55,8 @@ description = "rejects invalid character in digits"
 
 [5fe3c0e5-a945-49f2-b584-f0814b4dd1ef]
 description = "rejects negative span"
+include = false
+
+[c859f34a-9bfe-4897-9c2f-6d7f8598e7f0]
+description = "rejects negative span"
+reimplements = "5fe3c0e5-a945-49f2-b584-f0814b4dd1ef"

exercises/practice/largest-series-product/LargestSeriesProductTest.php

@@ -1,27 +1,5 @@
 <?php
 
-/*
- * By adding type hints and enabling strict type checking, code can become
- * easier to read, self-documenting and reduce the number of potential bugs.
- * By default, type declarations are non-strict, which means they will attempt
- * to change the original type to match the type specified by the
- * type-declaration.
- *
- * In other words, if you pass a string to a function requiring a float,
- * it will attempt to convert the string value to a float.
- *
- * To enable strict mode, a single declare directive must be placed at the top
- * of the file.
- * This means that the strictness of typing is configured on a per-file basis.
- * This directive not only affects the type declarations of parameters, but also
- * a function's return type.
- *
- * For more info review the Concept on strict type checking in the PHP track
- * <link>.
- *
- * To disable strict typing, comment out the directive below.
- */
-
 declare(strict_types=1);
 
 class LargestSeriesProductTest extends PHPUnit\Framework\TestCase
@@ -36,6 +14,20 @@ public static function setUpBeforeClass(): void
      * We will deal with the series of digits as strings to avoid having them cast to floats.
      */
 
+    /**
+     * uuid: 7c82f8b7-e347-48ee-8a22-f672323324d4
+     * @testdox finds the largest product if span equals length
+     */
+    public function testFindsTheLargestProductIfSpanEqualsLength(): void
+    {
+        $series = new Series("29");
+        $this->assertEquals(18, $series->largestProduct(2));
+    }
+
+    /**
+     * uuid: 88523f65-21ba-4458-a76a-b4aaf6e4cb5e
+     * @testdox can find the largest product of 2 with numbers in order
+     */
     public function testCanFindTheLargestProductOf2WithNumbersInOrder(): void
     {
         // The number starts with a 0, qualifying it to be an octal
@@ -44,72 +36,80 @@ public function testCanFindTheLargestProductOf2WithNumbersInOrder(): void
         $this->assertEquals(72, $series->largestProduct(2));
     }
 
+    /**
+     * uuid: f1376b48-1157-419d-92c2-1d7e36a70b8a
+     * @testdox can find the largest product of 2
+     */
     public function testCanFindTheLargestProductOf2(): void
     {
         $series = new Series("576802143");
         $this->assertEquals(48, $series->largestProduct(2));
     }
 
-    public function testFindsTheLargestProductIfSpanEqualsLength(): void
-    {
-        $series = new Series("29");
-        $this->assertEquals(18, $series->largestProduct(2));
-    }
-
+    /**
+     * uuid: 46356a67-7e02-489e-8fea-321c2fa7b4a4
+     * @testdox can find the largest product of 3 with numbers in order
+     */
     public function testCanFindTheLargestProductOf3WithNumbersInOrder(): void
     {
-        $series = new Series("123456789");
+        $series = new Series("0123456789");
         $this->assertEquals(504, $series->largestProduct(3));
     }
 
+    /**
+     * uuid: a2dcb54b-2b8f-4993-92dd-5ce56dece64a
+     * @testdox can find the largest product of 3
+     */
     public function testCanFindTheLargestProductOf3(): void
     {
         $series = new Series("1027839564");
         $this->assertEquals(270, $series->largestProduct(3));
     }
 
+    /**
+     * uuid: 673210a3-33cd-4708-940b-c482d7a88f9d
+     * @testdox can find the largest product of 5 with numbers in order
+     */
     public function testCanFindTheLargestProductOf5WithNumbersInOrder(): void
     {
         $series = new Series("0123456789");
         $this->assertEquals(15120, $series->largestProduct(5));
     }
 
+    /**
+     * uuid: 02acd5a6-3bbf-46df-8282-8b313a80a7c9
+     * @testdox can get the largest product of a big number
+     */
     public function testCanGetTheLargestProductOfABigNumber(): void
     {
         $series = new Series("73167176531330624919225119674426574742355349194934");
         $this->assertEquals(23520, $series->largestProduct(6));
     }
 
-    public function testCanGetTheLargestProductOfABigNumberProjectEuler(): void
-    {
-        $digits = "731671765313306249192251196744265747423553491949349698352031277450632623957831801698480186947"
-            . "8851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096"
-            . "3295227443043557668966489504452445231617318564030987111217223831136222989342338030813533627"
-            . "6614282806444486645238749303589072962904915604407723907138105158593079608667017242712188399"
-            . "8797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490"
-            . "7711670556013604839586446706324415722155397536978179778461740649551492908625693219784686224"
-            . "8283972241375657056057490261407972968652414535100474821663704844031998900088952434506585412"
-            . "2758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828"
-            . "4891288314260769004224219022671055626321111109370544217506941658960408071984038509624554443"
-            . "6298123098787992724428490918884580156166097919133875499200524063689912560717606058861164671"
-            . "0940507754100225698315520005593572972571636269561882670428252483600823257530420752963450";
-
-        $series = new Series($digits);
-        $this->assertEquals(23514624000, $series->largestProduct(13));
-    }
-
+    /**
+     * uuid: 76dcc407-21e9-424c-a98e-609f269622b5
+     * @testdox reports zero if the only digits are zero
+     */
     public function testReportsZeroIfTheOnlyDigitsAreZero(): void
     {
         $series = new Series("0000");
         $this->assertEquals(0, $series->largestProduct(2));
     }
 
+    /**
+     * uuid: 6ef0df9f-52d4-4a5d-b210-f6fae5f20e19
+     * @testdox reports zero if all spans include zero
+     */
     public function testReportsZeroIfAllSpansIncludeZero(): void
     {
         $series = new Series("99099");
         $this->assertEquals(0, $series->largestProduct(3));
     }
 
+    /**
+     * uuid: 5d81aaf7-4f67-4125-bf33-11493cc7eab7
+     * @testdox rejects span longer than string length
+     */
     public function testRejectsSpanLongerThanStringLength(): void
     {
         $this->expectException(InvalidArgumentException::class);
@@ -118,6 +118,30 @@ public function testRejectsSpanLongerThanStringLength(): void
         $series->largestProduct(4);
     }
 
+    /**
+     * uuid: 06bc8b90-0c51-4c54-ac22-3ec3893a079e
+     * @testdox reports 1 for empty string and empty product (0 span)
+     */
+    public function testReportsOneForEmptyStringAndEmptyProductSpanZero(): void
+    {
+        $series = new Series("");
+        $this->assertEquals(1, $series->largestProduct(0));
+    }
+
+    /**
+     * uuid: 3ec0d92e-f2e2-4090-a380-70afee02f4c0
+     * @testdox reports 1 for nonempty string and empty product (0 span)
+     */
+    public function testReportsOneForNonemptyStringAndEmptyProductSpanZero(): void
+    {
+        $series = new Series("123");
+        $this->assertEquals(1, $series->largestProduct(0));
+    }
+
+    /**
+     * uuid: 6d96c691-4374-4404-80ee-2ea8f3613dd4
+     * @testdox rejects empty string and nonzero span
+     */
     public function testRejectsEmptyStringAndNonzeroSpan(): void
     {
         $this->expectException(InvalidArgumentException::class);
@@ -126,6 +150,10 @@ public function testRejectsEmptyStringAndNonzeroSpan(): void
         $series->largestProduct(1);
     }
 
+    /**
+     * uuid: 7a38f2d6-3c35-45f6-8d6f-12e6e32d4d74
+     * @testdox rejects invalid character in digits
+     */
     public function testRejectsInvalidCharacterInDigits(): void
     {
         $this->expectException(InvalidArgumentException::class);
@@ -134,6 +162,10 @@ public function testRejectsInvalidCharacterInDigits(): void
         $series->largestProduct(2);
     }
 
+    /**
+     * uuid: c859f34a-9bfe-4897-9c2f-6d7f8598e7f0
+     * @testdox rejects negative span
+     */
     public function testRejectsNegativeSpan(): void
     {
         $this->expectException(InvalidArgumentException::class);