Add clsas for MD_STD_STRINGS more obscure string operations

tests/MD_STD_STRINGS_Test.php

@@ -0,0 +1,53 @@
+<?PHP
+/**
+ * Tests for MD_STD_IN.
+ *
+ * @author Joshua Ramon Enslin <joshua@museum-digital.de>
+ */
+declare(strict_types = 1);
+
+use PHPUnit\Framework\TestCase;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\Small;
+use PHPUnit\Framework\Attributes\CoversClass;
+
+/**
+ * Tests for MD_STD_STRINGS.
+ */
+#[small]
+#[CoversClass(\MD_STD_STRINGS::class)]
+final class MD_STD_STRINGS_Test extends TestCase {
+    /**
+     * Data provider for strings to duplicate words with dots in.
+     *
+     * @return array<array{0: string, 1: string}>
+     */
+    public static function duplicated_words_with_dots_provider():array {
+
+        $values = [
+            ["hallo test. hallo", "hallo test. hallo test"],
+        ];
+
+        $output = [];
+        foreach ($values as $value) {
+            $output[$value[0] . ' > ' . $value[1]] = $value;
+        }
+        return $output;
+
+    }
+
+    /**
+     * Function for testing duplicate_words_with_dots_for_indexing().
+     *
+     * @param string $input    Input.
+     * @param string $expected Expected output.
+     *
+     * @return void
+     */
+    #[DataProvider('duplicated_words_with_dots_provider')]
+    public function test_duplicate_words_with_dots_for_indexing(string $input, string $expected):void {
+
+        self::assertEquals($expected, MD_STD_STRINGS::duplicate_words_with_dots_for_indexing($input));
+
+    }
+}

tests/MD_STD_Test.php

@@ -739,6 +739,7 @@ final class MD_STD_Test extends TestCase {
             self::assertEmpty(MD_STD::strpos_multi($haystack, $needles));
         }
         else {
+            self::assertNotEmpty(MD_STD::strpos_multi($haystack, $needles));
             self::assertEquals($expected, MD_STD::strpos_multi($haystack, $needles)['position']);
         }