diff --git a/plugins/bc-mail/src/Model/Table/MailFieldsTable.php b/plugins/bc-mail/src/Model/Table/MailFieldsTable.php
index 23c70eae4e..a5de9fdada 100755
--- a/plugins/bc-mail/src/Model/Table/MailFieldsTable.php
+++ b/plugins/bc-mail/src/Model/Table/MailFieldsTable.php
@@ -249,6 +249,7 @@ public function halfTextMailField(string $value)
      * @return bool
      * @checked
      * @noTodo
+     * @unitTest
      */
     public function sourceMailField(string $value, array $context)
     {
diff --git a/plugins/bc-mail/tests/TestCase/Model/Table/MailFieldsTableTest.php b/plugins/bc-mail/tests/TestCase/Model/Table/MailFieldsTableTest.php
index b2c754f59d..1664de4fd7 100755
--- a/plugins/bc-mail/tests/TestCase/Model/Table/MailFieldsTableTest.php
+++ b/plugins/bc-mail/tests/TestCase/Model/Table/MailFieldsTableTest.php
@@ -189,12 +189,30 @@ public function testHalfTextMailField()
 
     /**
      * 選択リストの入力チェック
+     * @dataProvider sourceMailFieldDataProvider
      */
-    public function testSourceMailField()
+    public function test_sourceMailField($value, $context, $expected)
     {
-        $this->markTestIncomplete('このテストは、まだ実装されていません。');
+        $result = $this->MailFieldsTable->sourceMailField($value, $context);
+        $this->assertEquals($expected, $result);
+    }
+
+    public static function sourceMailFieldDataProvider()
+    {
+        return [
+            ['radio', ['data' => ['type' => 'radio']], true],
+            ['', ['data' => ['type' => 'radio']], false],
+            ['select', ['data' => ['type' => 'select']], true],
+            ['', ['data' => ['type' => 'select']], false],
+            ['multi_check', ['data' => ['type' => 'multi_check']], true],
+            ['', ['data' => ['type' => 'multi_check']], false],
+            ['autozip', ['data' => ['type' => 'autozip']], true],
+            ['', ['data' => ['type' => 'autozip']], false],
+            ['text', ['data' => ['type' => 'text']], true]
+        ];
     }
 
+
     /**
      * フィールドデータをコピーする
      *