test high order function

.github/workflows/ci.yml

@@ -41,8 +41,8 @@ jobs:
       run: |
         brew services start postgresql
         sleep 3
-        psql -c -d postgres -c 'select rolname from pg_roles'
-        psql -U postgres -d postgres -c 'create database customerdb;'
+        psql -d postgres -c 'select rolname from pg_roles'
+        psql -d postgres -c 'create database customerdb;'
         psql -d customerdb -f examples/database/pg/mydb.sql
     - name: Test v->c
       run: ./v test-compiler

vlib/compiler/tests/fn_test.v

@@ -115,6 +115,21 @@ fn high_fn_multi_return(a int, b fn (c []int, d []string) ([]int, []string)) {
 
 }
 
+fn sqr(x int) int {
+	return x * x
+}
+
 fn test_fns() {
 	// no asserts for now, just test function declarations above
+	high_fn(sqr)
+}
+
+
+fn test_anon_fn() {
+	/*
+	high_fn(fn (x int) int {
+		println('hello')
+		return x + 1
+	})
+	*/
 }