diff --git a/tests/phpunit/fixtures/sort/complex-sorted-asc.json b/tests/phpunit/fixtures/sort/complex-sorted-asc.json
new file mode 100644
index 00000000..0d19545a
--- /dev/null
+++ b/tests/phpunit/fixtures/sort/complex-sorted-asc.json
@@ -0,0 +1,50 @@
+[
+	{
+		"id": "9",
+		"imgUrl": "test.jpeg",
+		"imgThumbnailUrl": "test-150x150.jpeg",
+		"title": "archer"
+	},
+	{
+		"id": "1",
+		"imgUrl": "archer.png",
+		"imgThumbnailUrl": "archer.png",
+		"title": "archer"
+	},
+	{
+		"id": "7",
+		"imgUrl": "archer.png",
+		"imgThumbnailUrl": "archer.png",
+		"title": "archer"
+	},
+	{
+		"id": "19",
+		"imgUrl": "test.gif",
+		"imgThumbnailUrl": "test-1024x679.jpg",
+		"title": "test"
+	},
+	{
+		"id": "37",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": "test 1"
+	},
+	{
+		"id": "2",
+		"imgUrl": "trailer.png",
+		"imgThumbnailUrl": "trailer.png",
+		"title": "trailer"
+	},
+	{
+		"id": "25",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": ""
+	},
+	{
+		"id": "10",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": ""
+	}
+]
diff --git a/tests/phpunit/fixtures/sort/complex-sorted-desc.json b/tests/phpunit/fixtures/sort/complex-sorted-desc.json
new file mode 100644
index 00000000..2ed69aac
--- /dev/null
+++ b/tests/phpunit/fixtures/sort/complex-sorted-desc.json
@@ -0,0 +1,50 @@
+[
+	{
+		"id": "2",
+		"imgUrl": "trailer.png",
+		"imgThumbnailUrl": "trailer.png",
+		"title": "trailer"
+	},
+	{
+		"id": "37",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": "test 1"
+	},
+	{
+		"id": "19",
+		"imgUrl": "test.gif",
+		"imgThumbnailUrl": "test-1024x679.jpg",
+		"title": "test"
+	},
+	{
+		"id": "7",
+		"imgUrl": "archer.png",
+		"imgThumbnailUrl": "archer.png",
+		"title": "archer"
+	},
+	{
+		"id": "1",
+		"imgUrl": "archer.png",
+		"imgThumbnailUrl": "archer.png",
+		"title": "archer"
+	},
+	{
+		"id": "9",
+		"imgUrl": "test.jpeg",
+		"imgThumbnailUrl": "test-150x150.jpeg",
+		"title": "archer"
+	},
+	{
+		"id": "25",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": ""
+	},
+	{
+		"id": "10",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": ""
+	}
+]
diff --git a/tests/phpunit/fixtures/sort/complex.json b/tests/phpunit/fixtures/sort/complex.json
new file mode 100644
index 00000000..918214e2
--- /dev/null
+++ b/tests/phpunit/fixtures/sort/complex.json
@@ -0,0 +1,50 @@
+[
+	{
+		"id": "19",
+		"imgUrl": "test.gif",
+		"imgThumbnailUrl": "test-1024x679.jpg",
+		"title": "test"
+	},
+	{
+		"id": "9",
+		"imgUrl": "test.jpeg",
+		"imgThumbnailUrl": "test-150x150.jpeg",
+		"title": "archer"
+	},
+	{
+		"id": "25",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": ""
+	},
+	{
+		"id": "37",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": "test 1"
+	},
+	{
+		"id": "2",
+		"imgUrl": "trailer.png",
+		"imgThumbnailUrl": "trailer.png",
+		"title": "trailer"
+	},
+	{
+		"id": "10",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": ""
+	},
+	{
+		"id": "1",
+		"imgUrl": "archer.png",
+		"imgThumbnailUrl": "archer.png",
+		"title": "archer"
+	},
+	{
+		"id": "7",
+		"imgUrl": "archer.png",
+		"imgThumbnailUrl": "archer.png",
+		"title": "archer"
+	}
+]
diff --git a/tests/phpunit/fixtures/sort/empty-sorted.json b/tests/phpunit/fixtures/sort/empty-sorted.json
new file mode 100644
index 00000000..540f968c
--- /dev/null
+++ b/tests/phpunit/fixtures/sort/empty-sorted.json
@@ -0,0 +1,20 @@
+[
+	{
+		"id": "19",
+		"imgUrl": "test.gif",
+		"imgThumbnailUrl": "test-1024x679.jpg",
+		"title": ""
+	},
+	{
+		"id": "9",
+		"imgUrl": "test.jpeg",
+		"imgThumbnailUrl": "test-150x150.jpeg",
+		"title": ""
+	},
+	{
+		"id": "25",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": ""
+	}
+]
diff --git a/tests/phpunit/fixtures/sort/empty.json b/tests/phpunit/fixtures/sort/empty.json
new file mode 100644
index 00000000..540f968c
--- /dev/null
+++ b/tests/phpunit/fixtures/sort/empty.json
@@ -0,0 +1,20 @@
+[
+	{
+		"id": "19",
+		"imgUrl": "test.gif",
+		"imgThumbnailUrl": "test-1024x679.jpg",
+		"title": ""
+	},
+	{
+		"id": "9",
+		"imgUrl": "test.jpeg",
+		"imgThumbnailUrl": "test-150x150.jpeg",
+		"title": ""
+	},
+	{
+		"id": "25",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": ""
+	}
+]
diff --git a/tests/phpunit/fixtures/sort/equal-sorted.json b/tests/phpunit/fixtures/sort/equal-sorted.json
new file mode 100644
index 00000000..5f2ca1da
--- /dev/null
+++ b/tests/phpunit/fixtures/sort/equal-sorted.json
@@ -0,0 +1,20 @@
+[
+	{
+		"id": "25",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": "test-title"
+	},
+	{
+		"id": "9",
+		"imgUrl": "test.jpeg",
+		"imgThumbnailUrl": "test-150x150.jpeg",
+		"title": "test-title"
+	},
+	{
+		"id": "19",
+		"imgUrl": "test.gif",
+		"imgThumbnailUrl": "test-1024x679.jpg",
+		"title": "test-title"
+	}
+]
diff --git a/tests/phpunit/fixtures/sort/equal.json b/tests/phpunit/fixtures/sort/equal.json
new file mode 100644
index 00000000..048ff20e
--- /dev/null
+++ b/tests/phpunit/fixtures/sort/equal.json
@@ -0,0 +1,20 @@
+[
+	{
+		"id": "19",
+		"imgUrl": "test.gif",
+		"imgThumbnailUrl": "test-1024x679.jpg",
+		"title": "test-title"
+	},
+	{
+		"id": "9",
+		"imgUrl": "test.jpeg",
+		"imgThumbnailUrl": "test-150x150.jpeg",
+		"title": "test-title"
+	},
+	{
+		"id": "25",
+		"imgUrl": "test.png",
+		"imgThumbnailUrl": "test.png",
+		"title": "test-title"
+	}
+]
diff --git a/tests/phpunit/unit/test-sort.php b/tests/phpunit/unit/test-sort.php
new file mode 100644
index 00000000..9e064aa7
--- /dev/null
+++ b/tests/phpunit/unit/test-sort.php
@@ -0,0 +1,94 @@
+<?php
+/**
+ * Tests for ClassSort
+ *
+ * @package Visual Portfolio
+ */
+
+/**
+ * Sort test case.
+ */
+class ClassSort extends WP_UnitTestCase {
+	/**
+	 * Get fixture for test.
+	 *
+	 * @param string $filename - name of json file
+	 * @return string
+	 */
+	public function get_json_array( $filename ) {
+		$filepath = dirname( dirname( __FILE__ ) ) . '/fixtures/sort/' . $filename . '.json';
+		$json     = file_get_contents( $filepath );
+		// Decode the JSON file
+		$json_data = json_decode( $json, true );
+
+		return $json_data;
+	}
+
+	/**
+	 * Test for sort array with equal elements.
+	 *
+	 * @return void
+	 */
+	public function test_sort_equal() {
+		// Read the JSON file
+		$equal_array        = $this->get_json_array( 'equal' );
+		$equal_sorted_array = $this->get_json_array( 'equal-sorted' );
+		$sorted_array_asc   = Visual_Portfolio_Get::sort_array_by_field( $equal_array, 'title', 'asc' );
+		$sorted_array_desc  = Visual_Portfolio_Get::sort_array_by_field( $equal_array, 'title', 'desc' );
+
+		$this->assertEquals(
+            $equal_array,
+			$sorted_array_asc
+        );
+
+		$this->assertEquals(
+            $equal_sorted_array,
+			$sorted_array_desc
+        );
+	}
+
+	/**
+	 * Test for sort array with empty elements.
+	 *
+	 * @return void
+	 */
+	public function test_sort_empty() {
+		$empty_array        = $this->get_json_array( 'empty' );
+		$empty_sorted_array = $this->get_json_array( 'empty-sorted' );
+		$sorted_array_asc   = Visual_Portfolio_Get::sort_array_by_field( $empty_array, 'title', 'asc' );
+		$sorted_array_desc  = Visual_Portfolio_Get::sort_array_by_field( $empty_array, 'title', 'desc' );
+
+		$this->assertEquals(
+            $empty_sorted_array,
+			$sorted_array_asc
+        );
+
+		$this->assertEquals(
+            $empty_sorted_array,
+			$sorted_array_desc
+        );
+	}
+
+	/**
+	 * Test for sort array with complex elements.
+	 *
+	 * @return void
+	 */
+	public function test_sort_complex() {
+		$complex_array             = $this->get_json_array( 'complex' );
+		$complex_sorted_array_asc  = $this->get_json_array( 'complex-sorted-asc' );
+		$complex_sorted_array_desc = $this->get_json_array( 'complex-sorted-desc' );
+		$sorted_array_asc   = Visual_Portfolio_Get::sort_array_by_field( $complex_array, 'title', 'asc' );
+		$sorted_array_desc  = Visual_Portfolio_Get::sort_array_by_field( $complex_array, 'title', 'desc' );
+
+		$this->assertEquals(
+            $complex_sorted_array_asc,
+			$sorted_array_asc
+        );
+
+		$this->assertEquals(
+            $complex_sorted_array_desc,
+			$sorted_array_desc
+        );
+	}
+}