handle empty slices

knechtionscoding · Dec 29, 2019 · 2e6de9b · 2e6de9b
1 parent 6dd5a81
commit 2e6de9b
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Showing 2 changed files with 6 additions and 0 deletions.
diff --git a/jsonschema.go b/jsonschema.go
@@ -122,6 +122,10 @@ func (p *property) readFromSliceDeep(v reflect.Value) {
 		p.Type = "string"
 	} else if jsType != "" {
 		p.Items = &property{}
+		if v.Len() == 0 {
+			p.Items.read(t.Elem(), "")
+			return
+		}
 		p.Items.readDeep(v.Index(0), "")
 	}
 }

diff --git a/jsonschema_test.go b/jsonschema_test.go
@@ -339,6 +339,7 @@ func TestLoadMapDeep(t *testing.T) {
 				"anotherBool":       true,
 				"anotherInt":        1,
 				"anotherFloat":      1.699,
+				"emptySliceOfFloat": []float64{},
 			},
 			"aMapOfInterfaceToMapOfInterfaceToInterface": map[interface{}]interface{}{
 				"aPointerToMapOfInterfaceToInterface": &map[interface{}]interface{}{
@@ -386,6 +387,7 @@ func TestLoadMapDeep(t *testing.T) {
 							"anotherBool":       {Type: "boolean"},
 							"anotherFloat":      {Type: "number"},
 							"anotherInt":        {Type: "integer"},
+							"emptySliceOfFloat": {Type: "array", Items: &property{Type: "number"}},
 							"justAnotherString": {Type: "string"},
 						},
 					},