Fix issue with fuzzbuzz config

docs/guide.md

@@ -242,18 +242,17 @@ query {
 
 ### Using variables
 
-Variables and their values can be passed along side the GraphQL query. Using variables makes for better client side code as well as improved server side
-caching. The build-in web ui also hass support for variables. Not having to manupilate your GraphQL query string to insert values into it makes for cleaner
+Variables (`$product_id`) and their values (`"product_id": 5`) can be passed along side the GraphQL query. Using variables makes for better client side code as well as improved server side SQL query caching. The build-in web-ui also supports setting variables. Not having to manipulate your GraphQL query string to insert values into it makes for cleaner
 and better client side code.
 
 ```javascript
-// define the request object keeping the query and the variables seperate
+// Define the request object keeping the query and the variables seperate
 var req = { 
   query: '{ product(id: $product_id) { name } }' ,
   variables: { "product_id": 5 }
 }
 
-// use the fetch api to make the query
+// Use the fetch api to make the query
 fetch('http://localhost:8080/api/v1/graphql', {
   method: 'POST',
   headers: { 'Content-Type': 'application/json' },

fuzz.yaml

@@ -4,8 +4,8 @@ targets:
     language: go
     version: "1.12"
     corpus: ./corpus
-    #memory_limit: 1000 # in megabytes
-    #timeout: 500 # in milliseconds
+    memory_limit: "100" # in megabytes
+    timeout: "500" # in milliseconds
     harness:
       function: FuzzerEntrypoint
       # package defines where to import FuzzerEntrypoint from

qcode/parse_test.go

@@ -45,9 +45,15 @@ func compareOp(op1, op2 Operation) error {
 	return nil
 }
 
-func TestParse(t *testing.T) {
+func TestCompile(t *testing.T) {
+	qcompile, _ := NewCompiler(Config{})
+	_, err := qcompile.CompileQuery(`query {
+		product(id: 15) {
+			id
+			name
+		}
+	}`)
+	if err != nil {
+		t.Fatal(err)
 	}
-
-func BenchmarkParse(b *testing.B) {
-
 }

qcode/qcode.go

@@ -337,7 +337,7 @@ func (com *Compiler) compileQuery(op *Operation) (*Query, error) {
 	}
 
 	fil, ok := com.fm[selRoot.Table]
-	if !ok {
+	if !ok || fil == nil {
 		fil = com.fl
 	}