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-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-backslash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-contains-hash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-leading-space-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-cr-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-double-percent-encoded-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-double-percent-encoded-percent-encoded-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-userinfo-empty-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-with-userinfo-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-hostname-in-brackets-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-invalid-unicode-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-invalid-unicode-percent-encoded-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-newline-novalid.html5
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-space-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-square-brackets-port-contains-colon-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-tab-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-u0000-percent-encoded-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-u0000-percent-encoded-percent-encoded-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-bare-percent-sign-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-contains-space-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-backslash-at-sign-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-colon-backslash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-colon-chars-backslash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-space-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-percent-encoded-malformed-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-relative-square-brackets-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-tab-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-trailing-space-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-u0091-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-999999-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-cr-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-colon-bracket-colon-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-colon-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-dash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-multiple-letters-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-newline-novalid.html5
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-single-letter-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-space-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-tab-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/query-leading-space-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/query-trailing-space-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-data-single-slash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-backslash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-single-slash-c-bar-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-slash-slash-abc-bar-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-triple-slash-c-bar-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-ftp-no-slash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-ftp-single-slash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-backslash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-colon-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-square-bracket-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-single-slash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-https-no-slash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-https-single-slash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-cr-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-newline-novalid.html5
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-space-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-tab-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-backslash-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-password-bad-chars-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-password-contains-pile-of-poo-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-username-contains-at-sign-novalid.html4
-rw-r--r--testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-username-contains-pile-of-poo-novalid.html4
64 files changed, 259 insertions, 0 deletions
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-backslash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-backslash-novalid.html
new file mode 100644
index 0000000000..a765e5e79e
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-backslash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: fragment-backslash</title>
+<div itemid="#\" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-contains-hash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-contains-hash-novalid.html
new file mode 100644
index 0000000000..f365b9e720
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-contains-hash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: fragment-contains-hash</title>
+<div itemid="http://foo/path#f#g" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-leading-space-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-leading-space-novalid.html
new file mode 100644
index 0000000000..2f7182fe22
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/fragment-leading-space-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: fragment-leading-space</title>
+<div itemid="http://f:21/b# e" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-cr-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-cr-novalid.html
new file mode 100644
index 0000000000..36d3dc82f5
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-cr-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-cr</title>
+<div itemid="http://example. org" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-double-percent-encoded-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-double-percent-encoded-novalid.html
new file mode 100644
index 0000000000..8f7618e37e
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-double-percent-encoded-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-double-percent-encoded</title>
+<div itemid="http://%41.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-double-percent-encoded-percent-encoded-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-double-percent-encoded-percent-encoded-novalid.html
new file mode 100644
index 0000000000..c271ada021
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-double-percent-encoded-percent-encoded-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-double-percent-encoded-percent-encoded</title>
+<div itemid="http://%ef%bc%85%ef%bc%94%ef%bc%91.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-novalid.html
new file mode 100644
index 0000000000..07368db651
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-empty</title>
+<div itemid="http://" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-userinfo-empty-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-userinfo-empty-novalid.html
new file mode 100644
index 0000000000..6c5d07beb6
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-userinfo-empty-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-empty-userinfo-empty</title>
+<div itemid="http://@/www.example.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-with-userinfo-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-with-userinfo-novalid.html
new file mode 100644
index 0000000000..41a664bf22
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-empty-with-userinfo-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-empty-with-userinfo</title>
+<div itemid="http://user:pass@/" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-hostname-in-brackets-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-hostname-in-brackets-novalid.html
new file mode 100644
index 0000000000..a99370b65f
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-hostname-in-brackets-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-hostname-in-brackets</title>
+<div itemid="http://[www.google.com]/" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-invalid-unicode-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-invalid-unicode-novalid.html
new file mode 100644
index 0000000000..0104bd3ec7
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-invalid-unicode-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-invalid-unicode</title>
+<div itemid="http://﷐zyx.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-invalid-unicode-percent-encoded-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-invalid-unicode-percent-encoded-novalid.html
new file mode 100644
index 0000000000..940fe8a018
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-invalid-unicode-percent-encoded-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-invalid-unicode-percent-encoded</title>
+<div itemid="http://%ef%b7%90zyx.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-newline-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-newline-novalid.html
new file mode 100644
index 0000000000..6474d8ffa9
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-newline-novalid.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-newline</title>
+<div itemid="http://example.
+org" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-space-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-space-novalid.html
new file mode 100644
index 0000000000..5ccff6990b
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-space-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-space</title>
+<div itemid="http://example .org" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-square-brackets-port-contains-colon-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-square-brackets-port-contains-colon-novalid.html
new file mode 100644
index 0000000000..0c73b6c51d
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-square-brackets-port-contains-colon-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-square-brackets-port-contains-colon</title>
+<div itemid="http://[1::2]:3:4" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-tab-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-tab-novalid.html
new file mode 100644
index 0000000000..f29256c3d6
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-tab-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-tab</title>
+<div itemid="http://example .org" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-u0000-percent-encoded-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-u0000-percent-encoded-novalid.html
new file mode 100644
index 0000000000..154a92579e
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-u0000-percent-encoded-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-u0000-percent-encoded</title>
+<div itemid="http://%00.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-u0000-percent-encoded-percent-encoded-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-u0000-percent-encoded-percent-encoded-novalid.html
new file mode 100644
index 0000000000..6747c076e3
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/host-u0000-percent-encoded-percent-encoded-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: host-u0000-percent-encoded-percent-encoded</title>
+<div itemid="http://%ef%bc%85%ef%bc%90%ef%bc%90.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-bare-percent-sign-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-bare-percent-sign-novalid.html
new file mode 100644
index 0000000000..e5d5f5fa11
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-bare-percent-sign-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: path-bare-percent-sign</title>
+<div itemid="http://example.com/foo%" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-contains-space-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-contains-space-novalid.html
new file mode 100644
index 0000000000..a1d17b5f8b
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-contains-space-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: path-contains-space</title>
+<div itemid="/a/ /c" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-backslash-at-sign-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-backslash-at-sign-novalid.html
new file mode 100644
index 0000000000..0c59308d90
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-backslash-at-sign-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: path-leading-backslash-at-sign</title>
+<div itemid="http://foo.com/\@" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-colon-backslash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-colon-backslash-novalid.html
new file mode 100644
index 0000000000..08a190900b
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-colon-backslash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: path-leading-colon-backslash</title>
+<div itemid=":\" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-colon-chars-backslash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-colon-chars-backslash-novalid.html
new file mode 100644
index 0000000000..01115ee885
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-colon-chars-backslash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: path-leading-colon-chars-backslash</title>
+<div itemid=":foo.com\" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-space-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-space-novalid.html
new file mode 100644
index 0000000000..042758b438
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-leading-space-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: path-leading-space</title>
+<div itemid="http://f:21/ b" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-percent-encoded-malformed-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-percent-encoded-malformed-novalid.html
new file mode 100644
index 0000000000..49cab58db6
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-percent-encoded-malformed-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: path-percent-encoded-malformed</title>
+<div itemid="http://example.com/foo/%2e%2" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-relative-square-brackets-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-relative-square-brackets-novalid.html
new file mode 100644
index 0000000000..b750b59e49
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-relative-square-brackets-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: path-relative-square-brackets</title>
+<div itemid="[61:24:74]:98" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-tab-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-tab-novalid.html
new file mode 100644
index 0000000000..238d57e992
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-tab-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: path-tab</title>
+<div itemid="http://example.com/foo bar" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-trailing-space-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-trailing-space-novalid.html
new file mode 100644
index 0000000000..65b750b6f1
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-trailing-space-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: path-trailing-space</title>
+<div itemid="http://f:21/b ?" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-u0091-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-u0091-novalid.html
new file mode 100644
index 0000000000..ae36d74ead
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/path-u0091-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: path-u0091</title>
+<div itemid="http://example.com/foo‘" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-999999-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-999999-novalid.html
new file mode 100644
index 0000000000..6c1f14fbad
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-999999-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: port-999999</title>
+<div itemid="http://f:999999/c" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-cr-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-cr-novalid.html
new file mode 100644
index 0000000000..28cededa54
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-cr-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: port-cr</title>
+<div itemid="http://f: /c" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-colon-bracket-colon-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-colon-bracket-colon-novalid.html
new file mode 100644
index 0000000000..24c9fd1542
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-colon-bracket-colon-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: port-leading-colon-bracket-colon</title>
+<div itemid="http://2001::1]:80" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-colon-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-colon-novalid.html
new file mode 100644
index 0000000000..18656d36ae
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-colon-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: port-leading-colon</title>
+<div itemid="http://2001::1" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-dash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-dash-novalid.html
new file mode 100644
index 0000000000..1d275f79d6
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-leading-dash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: port-leading-dash</title>
+<div itemid="http://foo:-80/" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-multiple-letters-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-multiple-letters-novalid.html
new file mode 100644
index 0000000000..e404011d24
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-multiple-letters-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: port-multiple-letters</title>
+<div itemid="http://f:fifty-two/c" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-newline-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-newline-novalid.html
new file mode 100644
index 0000000000..3b556be6b7
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-newline-novalid.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: port-newline</title>
+<div itemid="http://f:
+/c" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-single-letter-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-single-letter-novalid.html
new file mode 100644
index 0000000000..b1274e33bf
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-single-letter-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: port-single-letter</title>
+<div itemid="http://f:b/c" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-space-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-space-novalid.html
new file mode 100644
index 0000000000..ad2e271cee
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-space-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: port-space</title>
+<div itemid="http://f: /c" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-tab-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-tab-novalid.html
new file mode 100644
index 0000000000..e015e7c87e
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/port-tab-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: port-tab</title>
+<div itemid="http://f: /c" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/query-leading-space-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/query-leading-space-novalid.html
new file mode 100644
index 0000000000..c4465245ec
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/query-leading-space-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: query-leading-space</title>
+<div itemid="http://f:21/b? d" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/query-trailing-space-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/query-trailing-space-novalid.html
new file mode 100644
index 0000000000..9ca912bfe1
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/query-trailing-space-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: query-trailing-space</title>
+<div itemid="http://f:21/b?d #" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-data-single-slash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-data-single-slash-novalid.html
new file mode 100644
index 0000000000..1ec8d49758
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-data-single-slash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-data-single-slash</title>
+<div itemid="data:/example.com/" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-backslash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-backslash-novalid.html
new file mode 100644
index 0000000000..602e154d8c
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-backslash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-file-backslash</title>
+<div itemid="file:c:\foo\bar.html" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-single-slash-c-bar-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-single-slash-c-bar-novalid.html
new file mode 100644
index 0000000000..f94b9e6383
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-single-slash-c-bar-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-file-single-slash-c-bar</title>
+<div itemid="file:/C|/foo/bar" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-slash-slash-abc-bar-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-slash-slash-abc-bar-novalid.html
new file mode 100644
index 0000000000..f613bd2640
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-slash-slash-abc-bar-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-file-slash-slash-abc-bar</title>
+<div itemid="file://abc|/foo/bar" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-triple-slash-c-bar-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-triple-slash-c-bar-novalid.html
new file mode 100644
index 0000000000..c77fe27684
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-file-triple-slash-c-bar-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-file-triple-slash-c-bar</title>
+<div itemid="file:///C|/foo/bar" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-ftp-no-slash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-ftp-no-slash-novalid.html
new file mode 100644
index 0000000000..906f089aca
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-ftp-no-slash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-ftp-no-slash</title>
+<div itemid="ftp:example.com/" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-ftp-single-slash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-ftp-single-slash-novalid.html
new file mode 100644
index 0000000000..48ae5d1d26
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-ftp-single-slash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-ftp-single-slash</title>
+<div itemid="ftp:/example.com/" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-backslash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-backslash-novalid.html
new file mode 100644
index 0000000000..8e28363a8a
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-backslash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-http-backslash</title>
+<div itemid="http:\\foo.com\" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-colon-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-colon-novalid.html
new file mode 100644
index 0000000000..e52bf145ca
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-colon-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-http-no-slash-colon</title>
+<div itemid="http::@c:29" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-novalid.html
new file mode 100644
index 0000000000..d6015babad
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-http-no-slash</title>
+<div itemid="http:foo.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-square-bracket-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-square-bracket-novalid.html
new file mode 100644
index 0000000000..3dc8745f3f
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-no-slash-square-bracket-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-http-no-slash-square-bracket</title>
+<div itemid="http:[61:27]/:foo" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-single-slash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-single-slash-novalid.html
new file mode 100644
index 0000000000..a653c2c7d2
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-http-single-slash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-http-single-slash</title>
+<div itemid="http:/example.com/" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-https-no-slash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-https-no-slash-novalid.html
new file mode 100644
index 0000000000..07b7261b27
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-https-no-slash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-https-no-slash</title>
+<div itemid="https:example.com/" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-https-single-slash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-https-single-slash-novalid.html
new file mode 100644
index 0000000000..6fbd3c1a81
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-https-single-slash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-https-single-slash</title>
+<div itemid="https:/example.com/" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-cr-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-cr-novalid.html
new file mode 100644
index 0000000000..fabd1ebe30
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-cr-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-trailing-cr</title>
+<div itemid="a: foo.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-newline-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-newline-novalid.html
new file mode 100644
index 0000000000..4d82605af2
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-newline-novalid.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-trailing-newline</title>
+<div itemid="a:
+foo.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-space-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-space-novalid.html
new file mode 100644
index 0000000000..f7a61cd772
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-space-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-trailing-space</title>
+<div itemid="a: foo.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-tab-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-tab-novalid.html
new file mode 100644
index 0000000000..a3c50b1875
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/scheme-trailing-tab-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: scheme-trailing-tab</title>
+<div itemid="a: foo.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-backslash-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-backslash-novalid.html
new file mode 100644
index 0000000000..838664b251
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-backslash-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: userinfo-backslash</title>
+<div itemid="http://a\b:c\d@foo.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-password-bad-chars-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-password-bad-chars-novalid.html
new file mode 100644
index 0000000000..282669321d
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-password-bad-chars-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: userinfo-password-bad-chars</title>
+<div itemid="http://&a:foo(b]c@d:2/" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-password-contains-pile-of-poo-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-password-contains-pile-of-poo-novalid.html
new file mode 100644
index 0000000000..8a5ba7a71f
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-password-contains-pile-of-poo-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: userinfo-password-contains-pile-of-poo</title>
+<div itemid="http://foo:💩@example.com" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-username-contains-at-sign-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-username-contains-at-sign-novalid.html
new file mode 100644
index 0000000000..99f41339cb
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-username-contains-at-sign-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: userinfo-username-contains-at-sign</title>
+<div itemid="http://::@c@d:2" itemtype="http://foo" itemscope></div>
diff --git a/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-username-contains-pile-of-poo-novalid.html b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-username-contains-pile-of-poo-novalid.html
new file mode 100644
index 0000000000..66d597ffc1
--- /dev/null
+++ b/testing/web-platform/tests/conformance-checkers/html/microdata/itemid/userinfo-username-contains-pile-of-poo-novalid.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>invalid itemid: userinfo-username-contains-pile-of-poo</title>
+<div itemid="http://💩:foo@example.com" itemtype="http://foo" itemscope></div>