diff --git a/tests/phpunit/tests/media/getAttachmentTaxonomies.php b/tests/phpunit/tests/media/getAttachmentTaxonomies.php
new file mode 100644
index 0000000000..c3c7bf49a7
--- /dev/null
+++ b/tests/phpunit/tests/media/getAttachmentTaxonomies.php
@@ -0,0 +1,82 @@
+<?php
+
+/**
+ * @group media
+ * @group taxonomy
+ */
+class Tests_Media_GetAttachmentTaxonomies extends WP_UnitTestCase {
+	public function test_should_return_attachment_taxonomy() {
+		register_taxonomy( 'wptests_tax', 'attachment' );
+
+		$a = self::factory()->attachment->create_object( 'image.jpg', 0, array(
+			'post_mime_type' => 'image/jpeg',
+			'post_type' => 'attachment'
+		) );
+		$attachment = get_post( $a );
+
+		$found = get_attachment_taxonomies( $attachment, 'names' );
+		$expected = array( 'wptests_tax' );
+
+		$this->assertSame( $expected, $found );
+	}
+
+	public function test_should_return_taxonomy_registered_for_specific_attachment_type() {
+		register_taxonomy( 'wptests_tax', 'attachment:image' );
+
+		$a = self::factory()->attachment->create_object( 'image.jpg', 0, array(
+			'post_mime_type' => 'image/jpeg',
+			'post_type' => 'attachment'
+		) );
+		$attachment = get_post( $a );
+
+		$found = get_attachment_taxonomies( $attachment, 'names' );
+		$expected = array( 'wptests_tax' );
+
+		$this->assertSame( $expected, $found );
+	}
+
+	public function test_should_return_taxonomy_registered_for_specific_attachment_mimetype() {
+		register_taxonomy( 'wptests_tax', 'attachment:image/jpeg' );
+
+		$a = self::factory()->attachment->create_object( 'image.jpg', 0, array(
+			'post_mime_type' => 'image/jpeg',
+			'post_type' => 'attachment'
+		) );
+		$attachment = get_post( $a );
+
+		$found = get_attachment_taxonomies( $attachment, 'names' );
+		$expected = array( 'wptests_tax' );
+
+		$this->assertSame( $expected, $found );
+	}
+
+	public function test_should_return_taxonomy_registered_for_specific_file_extension() {
+		register_taxonomy( 'wptests_tax', 'attachment:jpg' );
+
+		$a = self::factory()->attachment->create_object( 'image.jpg', 0, array(
+			'post_mime_type' => 'image/jpeg',
+			'post_type' => 'attachment'
+		) );
+		$attachment = get_post( $a );
+
+		$found = get_attachment_taxonomies( $attachment, 'names' );
+		$expected = array( 'wptests_tax' );
+
+		$this->assertSame( $expected, $found );
+	}
+
+	public function test_should_not_return_duplicate_taxonomies() {
+		register_taxonomy( 'wptests_tax', array( 'attachment', 'attachment:image/jpeg' ) );
+
+		$a = self::factory()->attachment->create_object( 'image.jpg', 0, array(
+			'post_mime_type' => 'image/jpeg',
+			'post_type' => 'attachment'
+		) );
+		$attachment = get_post( $a );
+
+		$found = get_attachment_taxonomies( $attachment, 'names' );
+		$expected = array( 'wptests_tax' );
+
+		$this->assertSame( $expected, $found );
+	}
+}