introspection for "skip" and "include" directives (fixes #30)

99designs · Dec 6, 2016 · 232356b · 232356b
1 parent 2e10f7b
commit 232356b
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Showing 2 changed files with 112 additions and 5 deletions.
diff --git a/graphql_test.go b/graphql_test.go
@@ -1105,6 +1105,84 @@ func TestIntrospection(t *testing.T) {
 				}
 			`,
 		},
+
+		{
+			Schema: starwarsSchema,
+			Query: `
+				{
+					__schema {
+						directives {
+							name
+							description
+							locations
+							args {
+								name
+								description
+								type {
+									kind
+									ofType {
+										kind
+										name
+									}
+								}
+							}
+						}
+					}
+				}
+			`,
+			ExpectedResult: `
+				{
+						"__schema": {
+							"directives": [
+								{
+									"name": "skip",
+									"description": "Directs the executor to skip this field or fragment when the ` + "`" + `if` + "`" + ` argument is true.",
+									"locations": [
+										"FIELD",
+										"FRAGMENT_SPREAD",
+										"INLINE_FRAGMENT"
+									],
+									"args": [
+										{
+											"name": "if",
+											"description": "Skipped when true.",
+											"type": {
+												"kind": "NON_NULL",
+												"ofType": {
+													"kind": "SCALAR",
+													"name": "Boolean"
+												}
+											}
+										}
+									]
+								},
+								{
+									"name": "include",
+									"description": "Directs the executor to include this field or fragment only when the ` + "`" + `if` + "`" + ` argument is true.",
+									"locations": [
+										"FIELD",
+										"FRAGMENT_SPREAD",
+										"INLINE_FRAGMENT"
+									],
+									"args": [
+										{
+											"name": "if",
+											"description": "Included when true.",
+											"type": {
+												"kind": "NON_NULL",
+												"ofType": {
+													"kind": "SCALAR",
+													"name": "Boolean"
+												}
+											}
+										}
+									]
+								}
+							]
+						}
+					}
+			`,
+		},
 	})
 }
 

diff --git a/internal/exec/introspection.go b/internal/exec/introspection.go
@@ -253,7 +253,32 @@ func (r *schemaResolver) SubscriptionType() *typeResolver {
 }
 
 func (r *schemaResolver) Directives() []*directiveResolver {
-	return nil
+	return []*directiveResolver{
+		&directiveResolver{
+			name:        "skip",
+			description: "Directs the executor to skip this field or fragment when the `if` argument is true.",
+			locations:   []string{"FIELD", "FRAGMENT_SPREAD", "INLINE_FRAGMENT"},
+			args: []*inputValueResolver{
+				&inputValueResolver{&common.InputValue{
+					Name: "if",
+					Desc: "Skipped when true.",
+					Type: &common.NonNull{OfType: booleanScalar},
+				}},
+			},
+		},
+		&directiveResolver{
+			name:        "include",
+			description: "Directs the executor to include this field or fragment only when the `if` argument is true.",
+			locations:   []string{"FIELD", "FRAGMENT_SPREAD", "INLINE_FRAGMENT"},
+			args: []*inputValueResolver{
+				&inputValueResolver{&common.InputValue{
+					Name: "if",
+					Desc: "Included when true.",
+					Type: &common.NonNull{OfType: booleanScalar},
+				}},
+			},
+		},
+	}
 }
 
 type typeResolver struct {
@@ -458,22 +483,26 @@ func (r *enumValueResolver) DeprecationReason() *string {
 }
 
 type directiveResolver struct {
+	name        string
+	description string
+	locations   []string
+	args        []*inputValueResolver
 }
 
 func (r *directiveResolver) Name() string {
-	panic("TODO")
+	return r.name
 }
 
 func (r *directiveResolver) Description() *string {
-	panic("TODO")
+	return &r.description
 }
 
 func (r *directiveResolver) Locations() []string {
-	panic("TODO")
+	return r.locations
 }
 
 func (r *directiveResolver) Args() []*inputValueResolver {
-	panic("TODO")
+	return r.args
 }
 
 var introspectionQuery *query.Document