[10.x] Add hasIndex and hasIndexes methods to Schema Builder

src/Illuminate/Database/Schema/Builder.php

@@ -289,6 +289,40 @@ public function whenTableDoesntHaveColumn(string $table, string $column, Closure
         }
     }
 
+    /**
+     * Determine if the given table has a given column.
+     *
+     * @param  string  $table
+     * @param  string  $index
+     * @return bool
+     */
+    public function hasIndex($table, $index)
+    {
+        return in_array(
+            strtolower($index), array_map('strtolower', $this->getIndexListing($table))
+        );
+    }
+
+    /**
+     * Determine if the given table has given columns.
+     *
+     * @param  string  $table
+     * @param  array  $indexes
+     * @return bool
+     */
+    public function hasIndexes($table, array $indexes)
+    {
+        $tableIndexes = array_map('strtolower', $this->getIndexListing($table));
+
+        foreach ($indexes as $index) {
+            if (! in_array(strtolower($index), $tableIndexes)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
     /**
      * Get the data type for the given column name.
      *
@@ -327,6 +361,17 @@ public function getColumnListing($table)
         return array_column($this->getColumns($table), 'name');
     }
 
+    /**
+     * Get the index listing for a given table.
+     *
+     * @param  string  $table
+     * @return array
+     */
+    public function getIndexListing($table)
+    {
+        return array_column($this->getIndexes($table), 'name');
+    }
+
     /**
      * Get the columns for a given table.
      *

src/Illuminate/Support/Facades/Schema.php

@@ -16,6 +16,8 @@
  * @method static array getViews()
  * @method static bool hasColumn(string $table, string $column)
  * @method static bool hasColumns(string $table, array $columns)
+ * @method static bool hasIndex(string $table, string $column)
+ * @method static bool hasIndexes(string $table, array $columns)
  * @method static void whenTableHasColumn(string $table, string $column, \Closure $callback)
  * @method static void whenTableDoesntHaveColumn(string $table, string $column, \Closure $callback)
  * @method static string getColumnType(string $table, string $column, bool $fullDefinition = false)

tests/Database/DatabaseSchemaBuilderTest.php

@@ -71,6 +71,31 @@ public function testTableHasColumns()
         $this->assertFalse($builder->hasColumns('users', ['id', 'address']));
     }
 
+    public function testTableHasIndex()
+    {
+        $connection = m::mock(Connection::class);
+        $grammar = m::mock(stdClass::class);
+        $connection->shouldReceive('getSchemaGrammar')->andReturn($grammar);
+        $builder = m::mock(Builder::class.'[getIndexListing]', [$connection]);
+        $builder->shouldReceive('getIndexListing')->with('users')->times(3)->andReturn(['id', 'firstname']);
+
+        $this->assertTrue($builder->hasIndex('users', 'id'));
+        $this->assertTrue($builder->hasIndex('users', 'firstname'));
+        $this->assertFalse($builder->hasIndex('users', 'address'));
+    }
+
+    public function testTableHasIndexes()
+    {
+        $connection = m::mock(Connection::class);
+        $grammar = m::mock(stdClass::class);
+        $connection->shouldReceive('getSchemaGrammar')->andReturn($grammar);
+        $builder = m::mock(Builder::class.'[getIndexListing]', [$connection]);
+        $builder->shouldReceive('getIndexListing')->with('users')->twice()->andReturn(['id', 'firstname']);
+
+        $this->assertTrue($builder->hasIndexes('users', ['id', 'firstname']));
+        $this->assertFalse($builder->hasIndexes('users', ['id', 'address']));
+    }
+
     public function testGetColumnTypeAddsPrefix()
     {
         $connection = m::mock(Connection::class);