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  1. // Copyright 2016 Google LLC
  2. //
  3. // Licensed under the Apache License, Version 2.0 (the "License");
  4. // you may not use this file except in compliance with the License.
  5. // You may obtain a copy of the License at
  6. //
  7. // http://www.apache.org/licenses/LICENSE-2.0
  8. //
  9. // Unless required by applicable law or agreed to in writing, software
  10. // distributed under the License is distributed on an "AS IS" BASIS,
  11. // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12. // See the License for the specific language governing permissions and
  13. // limitations under the License.
  14. package gensupport
  15. import (
  16. "encoding/json"
  17. "math"
  18. "testing"
  19. )
  20. func TestJSONFloat(t *testing.T) {
  21. for _, test := range []struct {
  22. in string
  23. want float64
  24. }{
  25. {"0", 0},
  26. {"-10", -10},
  27. {"1e23", 1e23},
  28. {`"Infinity"`, math.Inf(1)},
  29. {`"-Infinity"`, math.Inf(-1)},
  30. {`"NaN"`, math.NaN()},
  31. } {
  32. var f64 JSONFloat64
  33. if err := json.Unmarshal([]byte(test.in), &f64); err != nil {
  34. t.Fatal(err)
  35. }
  36. got := float64(f64)
  37. if got != test.want && math.IsNaN(got) != math.IsNaN(test.want) {
  38. t.Errorf("%s: got %f, want %f", test.in, got, test.want)
  39. }
  40. }
  41. }
  42. func TestJSONFloatErrors(t *testing.T) {
  43. var f64 JSONFloat64
  44. for _, in := range []string{"", "a", `"Inf"`, `"-Inf"`, `"nan"`, `"nana"`} {
  45. if err := json.Unmarshal([]byte(in), &f64); err == nil {
  46. t.Errorf("%q: got nil, want error", in)
  47. }
  48. }
  49. }