Moving print_dec-related tests to a separate file

Author: lpbak

tests/number.rs

@@ -126,9 +126,3 @@ fn as_fixed_point_i64() {
 fn convert_f64_precision() {
     assert_eq!(Number::from_parts(true, 4750000000000001, -18), 0.004750000000000001);
 }
-
-#[test]
-fn issue_107() {
-    let n = Number::from_parts(true, 1, -32768);
-    assert_eq!(format!("{}", n), "1e-32768");
-}

tests/print_dec.rs

@@ -0,0 +1,9 @@
+extern crate json;
+
+use json::number::Number;
+
+#[test]
+fn issue_107() {
+    let n = Number::from_parts(true, 1, -32768);
+    assert_eq!(format!("{}", n), "1e-32768");
+}