These snippets I have gotten from FilledStacks so make sure to follow him!

Flutter_test_snippets.code-snippets

{
	"Main Test Suite Setup": {
		"prefix": "testm",
		"body": [
			"import 'package:flutter_test/flutter_test.dart';",
			"",
			"void main() {",
			" group('${1:${TM_FILENAME_BASE/(.*)/${1:/pascalcase}/g}} -', (){",
			"",
			" });",
			"}"
		],
		"description": "Main Test Suite Setup"
	},
	"Test Group Setup": {
		"prefix": "testg",
		"description": "Creates a Test group with a test",
		"body": [
			"group('${1} -', () {",
			" test('${2}', () {",
			"",
			" });",
			"});",
		]
	},
	"Single Test Setup": {
		"prefix": "tests",
		"description": "Creates a single test",
		"body": [
			" test('${1}', () {",
			"",
			" });",
		]
	},
}