This is a testharness.js-based test.
Found 30 FAIL, 0 TIMEOUT, 0 NOTRUN.
[FAIL] SVG image, with natural width being negative
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural width being negative (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
[FAIL] SVG image, with natural height being negative
  assert_equals: naturalHeight expected 150 but got 0
[FAIL] SVG image, with natural height being negative (when not rendered)
  assert_equals: naturalHeight when not rendered expected 150 but got 0
[FAIL] SVG image, with natural width being negative, and aspect ratio from viewBox
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural width being negative, and aspect ratio from viewBox (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
[FAIL] SVG image, with natural height being negative, and aspect ratio from viewBox
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural height being negative, and aspect ratio from viewBox (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
[FAIL] SVG image, with natural width and height being negative, and aspect ratio from viewBox
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural width and height being negative, and aspect ratio from viewBox (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
[FAIL] SVG image, with natural width being negative (with srcset/1x)
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural width being negative (with srcset/1x) (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
[FAIL] SVG image, with natural height being negative (with srcset/1x)
  assert_equals: naturalHeight expected 150 but got 0
[FAIL] SVG image, with natural height being negative (with srcset/1x) (when not rendered)
  assert_equals: naturalHeight when not rendered expected 150 but got 0
[FAIL] SVG image, with natural width being negative, and aspect ratio from viewBox (with srcset/1x)
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural width being negative, and aspect ratio from viewBox (with srcset/1x) (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
[FAIL] SVG image, with natural height being negative, and aspect ratio from viewBox (with srcset/1x)
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural height being negative, and aspect ratio from viewBox (with srcset/1x) (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
[FAIL] SVG image, with natural width and height being negative, and aspect ratio from viewBox (with srcset/1x)
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural width and height being negative, and aspect ratio from viewBox (with srcset/1x) (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
[FAIL] SVG image, with natural width being negative (with srcset/2x)
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural width being negative (with srcset/2x) (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
[FAIL] SVG image, with natural height being negative (with srcset/2x)
  assert_equals: naturalHeight expected 150 but got 0
[FAIL] SVG image, with natural height being negative (with srcset/2x) (when not rendered)
  assert_equals: naturalHeight when not rendered expected 150 but got 0
[FAIL] SVG image, with natural width being negative, and aspect ratio from viewBox (with srcset/2x)
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural width being negative, and aspect ratio from viewBox (with srcset/2x) (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
[FAIL] SVG image, with natural height being negative, and aspect ratio from viewBox (with srcset/2x)
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural height being negative, and aspect ratio from viewBox (with srcset/2x) (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
[FAIL] SVG image, with natural width and height being negative, and aspect ratio from viewBox (with srcset/2x)
  assert_equals: naturalWidth expected 300 but got 0
[FAIL] SVG image, with natural width and height being negative, and aspect ratio from viewBox (with srcset/2x) (when not rendered)
  assert_equals: naturalWidth when not rendered expected 300 but got 0
Harness: the test ran to completion.