Fixed number parsing as float bug in JSON #1756

pkg/yqlib/decoder_json.go

@@ -54,8 +54,16 @@ func (dec *jsonDecoder) convertToYamlNode(data *orderedMap) (*yaml.Node, error)
 		case nil:
 			return createScalarNode(nil, "null"), nil
 		case float64, float32:
-			// json decoder returns ints as float.
-			return parseSnippet(fmt.Sprintf("%v", rawData))
+			// json decoder returns ints as float.'
+			intNum := int(rawData.(float64))
+
+			// if the integer representation is the same as the original
+			// then its an int.
+			if float64(intNum) == rawData.(float64) {
+				return createScalarNode(intNum, fmt.Sprintf("%v", intNum)), nil
+			}
+
+			return createScalarNode(rawData, fmt.Sprintf("%v", rawData)), nil
 		case int, int64, int32, string, bool:
 			return createScalarNode(rawData, fmt.Sprintf("%v", rawData)), nil
 		case []*orderedMap:

pkg/yqlib/json_test.go

@@ -198,8 +198,8 @@ var jsonScenarios = []formatScenario{
 	{
 		description:  "numbers",
 		skipDoc:      true,
-		input:        "[3, 3.0, 3.1, -1]",
-		expected:     "- 3\n- 3\n- 3.1\n- -1\n",
+		input:        "[3, 3.0, 3.1, -1, 999999, 1000000, 1000001, 1.1]",
+		expected:     "- 3\n- 3\n- 3.1\n- -1\n- 999999\n- 1000000\n- 1000001\n- 1.1\n",
 		scenarioType: "decode-ndjson",
 	},
 	{