Fix reversed assertion

Author: PrinsFrank

tests/Unit/Currency/CurrencySymbolTest.php

@@ -7,6 +7,7 @@
 use PrinsFrank\Standards\Currency\CurrencyAlpha3;
 use PrinsFrank\Standards\Currency\CurrencyName;
 use PrinsFrank\Standards\Currency\CurrencyNumeric;
+use PrinsFrank\Standards\Currency\CurrencySymbol;
 use TypeError;
 
 /**
@@ -23,7 +24,7 @@ public function testAllAlpha3CasesHaveAccessToSymbolOrNull(): void
         static::assertNotEmpty($cases);
         foreach ($cases as $case) {
             try {
-                $case->getSymbol();
+                CurrencySymbol::forCurrency($case);
             } catch (TypeError) {
                 $this->fail(sprintf('Unable to retrieve symbol for %s', $case->name));
             }
@@ -39,7 +40,7 @@ public function testAllNameCasesHaveAccessToSymbolOrNull(): void
         static::assertNotEmpty($cases);
         foreach ($cases as $case) {
             try {
-                $case->getSymbol();
+                CurrencySymbol::forCurrency($case);
             } catch (TypeError) {
                 $this->fail(sprintf('Unable to retrieve symbol for %s', $case->name));
             }
@@ -55,7 +56,7 @@ public function testAllNumericCasesHaveAccessToSymbolOrNull(): void
         static::assertNotEmpty($cases);
         foreach ($cases as $case) {
             try {
-                $case->getSymbol();
+                CurrencySymbol::forCurrency($case);
             } catch (TypeError) {
                 $this->fail(sprintf('Unable to retrieve symbol for %s', $case->name));
             }