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-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-join-001-ref.html42
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-no-join-001-ref.html47
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-tatweel-001-ref.html44
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-tatweel-002-ref.html50
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/shaping-join-001.html48
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/shaping-join-002.html59
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/shaping-join-003.html56
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-001.html52
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-002.html63
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-003.html60
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-001.html47
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-002.html58
-rw-r--r--testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-003.html55
13 files changed, 681 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-join-001-ref.html b/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-join-001-ref.html
new file mode 100644
index 0000000000..1baeea5b0b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-join-001-ref.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test reference</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ }
+ table {
+ font-family: 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl>
+<tr><!-- alef, final form as it doesn't have a medial form -->
+ <td>&#xFE8E;
+ <td>&#xFE8E;
+<tr><!-- alef, final form -->
+ <td>&#xFE8E;
+ <td>&#xFE8E;
+<tr><!-- beh, initial form -->
+ <td>&#xFE91;
+ <td>&#xFE91;
+<tr><!-- beh, medial form -->
+ <td>&#xFE92;
+ <td>&#xFE92;
+<tr><!-- beh, final form -->
+ <td>&#xFE90;
+ <td>&#xFE90;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-no-join-001-ref.html b/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-no-join-001-ref.html
new file mode 100644
index 0000000000..4bf1b4aed7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-no-join-001-ref.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test test</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ font-weight: normal;
+ font-style: normal;
+ }
+ table {
+ font-family: 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl lang=ar>
+<tr><!-- alef, isolated rather than final -->
+ <td>&#x640;&#xFE8D;
+ <td>&#x640;&#xFE8D;
+<tr><!-- beh, isolated rather than initial -->
+ <td>&#xFE8F;&#x640;
+ <td>&#xFE8F;&#x640;
+<tr><!-- beh, final rather than medial -->
+ <td>&#x640;&#xFE90;&#x640;
+ <td>&#x640;&#xFE90;&#x640;
+<tr><!-- beh, isolated rather than medial -->
+ <td>&#x640;&#xFE8F;&#x640;
+ <td>&#x640;&#xFE8F;&#x640;
+<tr><!-- beh, initial rather than medial -->
+ <td>&#x640;&#xFE91;&#x640;
+ <td>&#x640;&#xFE91;&#x640;
+<tr><!-- beh, isolated rather than final -->
+ <td>&#x640;&#xFE8F;
+ <td>&#x640;&#xFE8F;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-tatweel-001-ref.html b/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-tatweel-001-ref.html
new file mode 100644
index 0000000000..87880e666a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-tatweel-001-ref.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test reference</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ font-weight: normal;
+ font-style: normal;
+ }
+ table {
+ font-family: 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl lang=ar>
+<tr><!-- alef, final form as it doesn't have a medial form -->
+ <td>&#x640;&#xFE8E;&#x640;
+ <td>&#x640;&#xFE8E;&#x640;
+<tr><!-- alef, final form -->
+ <td>&#x640;&#xFE8E;
+ <td>&#x640;&#xFE8E;
+<tr><!-- beh, initial form -->
+ <td>&#xFE91;&#x640;
+ <td>&#xFE91;&#x640;
+<tr><!-- beh, medial form -->
+ <td>&#x640;&#xFE92;&#x640;
+ <td>&#x640;&#xFE92;&#x640;
+<tr><!-- beh, final form -->
+ <td>&#x640;&#xFE90;
+ <td>&#x640;&#xFE90;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-tatweel-002-ref.html b/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-tatweel-002-ref.html
new file mode 100644
index 0000000000..4393172ac2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/reference/shaping-tatweel-002-ref.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test reference</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'tatweel';
+ src: url('/fonts/Scheherazade-Regular.woff') format('woff');
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ }
+ span {
+ font-family: 'tatweel';
+ line-height: 0;
+ }
+ table {
+ font-family: 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl lang=ar>
+<tr><!-- alef, final form as it doesn't have a medial form -->
+ <td><span>&#x640;</span>&#xFE8E;<span>&#x640;</span>
+ <td><span>&#x640;</span>&#xFE8E;<span>&#x640;</span>
+<tr><!-- alef, final form -->
+ <td><span>&#x640;</span>&#xFE8E;
+ <td><span>&#x640;</span>&#xFE8E;
+<tr><!-- beh, initial form -->
+ <td>&#xFE91;<span>&#x640;</span>
+ <td>&#xFE91;<span>&#x640;</span>
+<tr><!-- beh, medial form -->
+ <td><span>&#x640;</span>&#xFE92;<span>&#x640;</span>
+ <td><span>&#x640;</span>&#xFE92;<span>&#x640;</span>
+<tr><!-- beh, final form -->
+ <td><span>&#x640;</span>&#xFE90;
+ <td><span>&#x640;</span>&#xFE90;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/shaping-join-001.html b/testing/web-platform/tests/css/css-text/text-encoding/shaping-join-001.html
new file mode 100644
index 0000000000..c4a4d00c92
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/shaping-join-001.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test: zwj and text-shaping</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-text-3/#text-encoding">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch23.pdf">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch09.pdf">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_joining_enforcement">
+<link rel="match" href="reference/shaping-join-001-ref.html">
+<meta name="assert" content="Arabic characters next to a ZERO WIDTH JOINER character must take their correct positional form.">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ }
+ table {
+ font-family: 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl>
+<tr><!-- alef, final form as it doesn't have a medial form -->
+ <td>&zwj;&#x0627;&zwj;
+ <td>&#xFE8E;
+<tr><!-- alef, final form -->
+ <td>&zwj;&#x0627;
+ <td>&#xFE8E;
+<tr><!-- beh, initial form -->
+ <td>&#x0628;&zwj;
+ <td>&#xFE91;
+<tr><!-- beh, medial form -->
+ <td>&zwj;&#x0628;&zwj;
+ <td>&#xFE92;
+<tr><!-- beh, final form -->
+ <td>&zwj;&#x0628;
+ <td>&#xFE90;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/shaping-join-002.html b/testing/web-platform/tests/css/css-text/text-encoding/shaping-join-002.html
new file mode 100644
index 0000000000..1e4eaf7fe9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/shaping-join-002.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test: zwj and text-shaping, cross font, fallback</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-text-3/#text-encoding">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch23.pdf">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch09.pdf">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_joining_enforcement">
+<link rel="match" href="reference/shaping-join-001-ref.html">
+<meta name="assert" content="Arabic characters next to a ZERO WIDTH JOINER character must take their correct positional form, even if the ZWJ comes from a differnt font due to font fallback.">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'primary';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ unicode-range: U+20;
+ }
+ @font-face {
+ font-family: 'joiners';
+ src: url('/fonts/noto/noto-sans-v8-latin-regular.woff') format('woff');
+ unicode-range: U+200C-200D;
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ }
+ table {
+ /*using a primary font with just U+20 (space) to get the baseline right*/
+ font-family: 'primary', 'joiners', 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl>
+<tr><!-- alef, final form as it doesn't have a medial form -->
+ <td>&zwj;&#x0627;&zwj;
+ <td>&#xFE8E;
+<tr><!-- alef, final form -->
+ <td>&zwj;&#x0627;
+ <td>&#xFE8E;
+<tr><!-- beh, initial form -->
+ <td>&#x0628;&zwj;
+ <td>&#xFE91;
+<tr><!-- beh, medial form -->
+ <td>&zwj;&#x0628;&zwj;
+ <td>&#xFE92;
+<tr><!-- beh, final form -->
+ <td>&zwj;&#x0628;
+ <td>&#xFE90;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/shaping-join-003.html b/testing/web-platform/tests/css/css-text/text-encoding/shaping-join-003.html
new file mode 100644
index 0000000000..71459335d4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/shaping-join-003.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test: zwj and text-shaping, cross font, explicit</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-text-3/#text-encoding">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch23.pdf">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch09.pdf">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_joining_enforcement">
+<link rel="match" href="reference/shaping-join-001-ref.html">
+<meta name="assert" content="Arabic characters next to a ZERO WIDTH JOINER character must take their correct positional form, even if the ZWJ comes from a differnt font due to being in a different element with an explicit different font.">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'joiners';
+ src: url('/fonts/noto/noto-sans-v8-latin-regular.woff') format('woff');
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ }
+ span {
+ font-family: 'joiners';
+ line-height: 0;
+ }
+ table {
+ font-family: 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl>
+<tr><!-- alef, final form as it doesn't have a medial form -->
+ <td><span>&zwj;</span>&#x0627;<span>&zwj;</span>
+ <td>&#xFE8E;
+<tr><!-- alef, final form -->
+ <td><span>&zwj;</span>&#x0627;
+ <td>&#xFE8E;
+<tr><!-- beh, initial form -->
+ <td>&#x0628;<span>&zwj;</span>
+ <td>&#xFE91;
+<tr><!-- beh, medial form -->
+ <td><span>&zwj;</span>&#x0628;<span>&zwj;</span>
+ <td>&#xFE92;
+<tr><!-- beh, final form -->
+ <td><span>&zwj;</span>&#x0628;
+ <td>&#xFE90;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-001.html b/testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-001.html
new file mode 100644
index 0000000000..738189d3a3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-001.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test: zwnj and text-shaping</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-text-3/#text-encoding">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch23.pdf">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch09.pdf">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_disjoining_enforcement">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_joining_enforcement">
+<link rel="match" href="reference/shaping-no-join-001-ref.html">
+<meta name="assert" content="Arabic characters next to a ZERO WIDTH NON JOINER character must not take their positional form. ">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ }
+ table {
+ font-family: 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl lang=ar>
+<tr><!-- alef, isolated rather than final -->
+ <td>&#x640;&zwnj;&#x0627;
+ <td>&#x640;&#xFE8D;
+<tr><!-- beh, isolated rather than initial -->
+ <td>&#x0628;&zwnj;&#x640;
+ <td>&#xFE8F;&#x640;
+<tr><!-- beh, final rather than medial -->
+ <td>&#x640;&#x0628;&zwnj;&#x640;
+ <td>&#x640;&#xFE90;&#x640;
+<tr><!-- beh, isolated rather than medial -->
+ <td>&#x640;&zwnj;&#x0628;&zwnj;&#x640;
+ <td>&#x640;&#xFE8F;&#x640;
+<tr><!-- beh, initial rather than medial -->
+ <td>&#x640;&zwnj;&#x0628;&#x640;
+ <td>&#x640;&#xFE91;&#x640;
+<tr><!-- beh, isolated rather than final -->
+ <td>&#x640;&zwnj;&#x0628;
+ <td>&#x640;&#xFE8F;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-002.html b/testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-002.html
new file mode 100644
index 0000000000..14fa73ed85
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-002.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test: zwnj and text-shaping, cross font, fallback</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-text-3/#text-encoding">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch23.pdf">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch09.pdf">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_disjoining_enforcement">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_joining_enforcement">
+<link rel="match" href="reference/shaping-no-join-001-ref.html">
+<meta name="assert" content="Arabic characters next to a ZERO WIDTH NON JOINER character must not take their positional form, even if the ZWNJ comes from a differnt font due to font fallback.">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'primary';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ unicode-range: U+20;
+ }
+ @font-face {
+ font-family: 'joiners';
+ src: url('/fonts/noto/noto-sans-v8-latin-regular.woff') format('woff');
+ unicode-range: U+200C-200D;
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ }
+ table {
+ /*using a primary font with just U+20 (space) to get the baseline right*/
+ font-family: 'primary', 'joiners', 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl lang=ar>
+<tr><!-- alef, isolated rather than final -->
+ <td>&#x640;&zwnj;&#x0627;
+ <td>&#x640;&#xFE8D;
+<tr><!-- beh, isolated rather than initial -->
+ <td>&#x0628;&zwnj;&#x640;
+ <td>&#xFE8F;&#x640;
+<tr><!-- beh, final rather than medial -->
+ <td>&#x640;&#x0628;&zwnj;&#x640;
+ <td>&#x640;&#xFE90;&#x640;
+<tr><!-- beh, isolated rather than medial -->
+ <td>&#x640;&zwnj;&#x0628;&zwnj;&#x640;
+ <td>&#x640;&#xFE8F;&#x640;
+<tr><!-- beh, initial rather than medial -->
+ <td>&#x640;&zwnj;&#x0628;&#x640;
+ <td>&#x640;&#xFE91;&#x640;
+<tr><!-- beh, isolated rather than final -->
+ <td>&#x640;&zwnj;&#x0628;
+ <td>&#x640;&#xFE8F;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-003.html b/testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-003.html
new file mode 100644
index 0000000000..e7d8c85701
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/shaping-no-join-003.html
@@ -0,0 +1,60 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test: zwnj and text-shaping, cross font, explicit</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-text-3/#text-encoding">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch23.pdf">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch09.pdf">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_disjoining_enforcement">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_joining_enforcement">
+<link rel="match" href="reference/shaping-no-join-001-ref.html">
+<meta name="assert" content="Arabic characters next to a ZERO WIDTH NON JOINER character must not take their positional form, even if the ZWNJ comes from a differnt font due to being in a different element with an explicit different font.">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'joiners';
+ src: url('/fonts/noto/noto-sans-v8-latin-regular.woff') format('woff');
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ }
+ span {
+ font-family: 'joiners';
+ line-height: 0;
+ }
+ table {
+ font-family: 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl lang=ar>
+<tr><!-- alef, isolated rather than final -->
+ <td>&#x640;<span>&zwnj;</span>&#x0627;
+ <td>&#x640;&#xFE8D;
+<tr><!-- beh, isolated rather than initial -->
+ <td>&#x0628;<span>&zwnj;</span>&#x640;
+ <td>&#xFE8F;&#x640;
+<tr><!-- beh, final rather than medial -->
+ <td>&#x640;&#x0628;<span>&zwnj;</span>&#x640;
+ <td>&#x640;&#xFE90;&#x640;
+<tr><!-- beh, isolated rather than medial -->
+ <td>&#x640;<span>&zwnj;</span>&#x0628;<span>&zwnj;</span>&#x640;
+ <td>&#x640;&#xFE8F;&#x640;
+<tr><!-- beh, initial rather than medial -->
+ <td>&#x640;<span>&zwnj;</span>&#x0628;&#x640;
+ <td>&#x640;&#xFE91;&#x640;
+<tr><!-- beh, isolated rather than final -->
+ <td>&#x640;<span>&zwnj;</span>&#x0628;
+ <td>&#x640;&#xFE8F;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-001.html b/testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-001.html
new file mode 100644
index 0000000000..eaf5c9d338
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-001.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test: tatweel and text-shaping</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-text-3/#text-encoding">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch09.pdf">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_joining_enforcement">
+<link rel="match" href="reference/shaping-tatweel-001-ref.html">
+<meta name="assert" content="Arabic characters next to a U+0640 ARABIC TATWEEL character must take their correct positional form.">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ }
+ table {
+ font-family: 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl lang=ar>
+<tr><!-- alef, final form as it doesn't have a medial form -->
+ <td>&#x640;&#x0627;&#x640;
+ <td>&#x640;&#xFE8E;&#x640;
+<tr><!-- alef, final form -->
+ <td>&#x640;&#x0627;
+ <td>&#x640;&#xFE8E;
+<tr><!-- beh, initial form -->
+ <td>&#x0628;&#x640;
+ <td>&#xFE91;&#x640;
+<tr><!-- beh, medial form -->
+ <td>&#x640;&#x0628;&#x640;
+ <td>&#x640;&#xFE92;&#x640;
+<tr><!-- beh, final form -->
+ <td>&#x640;&#x0628;
+ <td>&#x640;&#xFE90;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-002.html b/testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-002.html
new file mode 100644
index 0000000000..f6878efe70
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-002.html
@@ -0,0 +1,58 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test: tatweel and text-shaping, cross font, fallback</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-text-3/#text-encoding">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch09.pdf">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_joining_enforcement">
+<link rel="match" href="reference/shaping-tatweel-002-ref.html">
+<meta name="assert" content="Arabic characters next to a U+0640 ARABIC TATWEEL character must take their correct positional form, even if the tatweel comes from a differnt font via font due to font fallback.">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'primary';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ unicode-range: U+20;
+ }
+ @font-face {
+ font-family: 'tatweel';
+ src: url('/fonts/Scheherazade-Regular.woff') format('woff');
+ unicode-range: U+0640;
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ }
+ table {
+ /*using a primary font with just U+20 (space) to get the baseline right*/
+ font-family: 'primary', 'tatweel', 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl lang=ar>
+<tr><!-- alef, final form as it doesn't have a medial form -->
+ <td>&#x640;&#x0627;&#x640;
+ <td>&#x640;&#xFE8E;&#x640;
+<tr><!-- alef, final form -->
+ <td>&#x640;&#x0627;
+ <td>&#x640;&#xFE8E;
+<tr><!-- beh, initial form -->
+ <td>&#x0628;&#x640;
+ <td>&#xFE91;&#x640;
+<tr><!-- beh, medial form -->
+ <td>&#x640;&#x0628;&#x640;
+ <td>&#x640;&#xFE92;&#x640;
+<tr><!-- beh, final form -->
+ <td>&#x640;&#x0628;
+ <td>&#x640;&#xFE90;
+</table>
diff --git a/testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-003.html b/testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-003.html
new file mode 100644
index 0000000000..7e7107bc73
--- /dev/null
+++ b/testing/web-platform/tests/css/css-text/text-encoding/shaping-tatweel-003.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text level 3 Test: tatweel and text-shaping, cross font, explicit</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-text-3/#text-encoding">
+<link rel="help" href="https://www.unicode.org/versions/Unicode11.0.0/ch09.pdf">
+<link rel="help" href="https://www.w3.org/TR/alreq/#h_joining_enforcement">
+<link rel="match" href="reference/shaping-tatweel-002-ref.html">
+<meta name="assert" content="Arabic characters next to a U+0640 ARABIC TATWEEL character must take their correct positional form, even if the tatweel comes from a differnt font due to being in a different element with an explicit different font.">
+<style>
+ table {
+ font-size: 3em;
+ border-spacing: 0 3px;
+ }
+ td {
+ padding: 0 0.5ch;
+ line-height: 1;
+ border: 1px solid;
+ }
+ @font-face {
+ font-family: 'tatweel';
+ src: url('/fonts/Scheherazade-Regular.woff') format('woff');
+ }
+ @font-face {
+ font-family: 'csstest_noto';
+ src: url('/fonts/noto/NotoNaskhArabic-regular.woff2') format('woff2');
+ }
+ span {
+ font-family: 'tatweel';
+ line-height: 0;
+ }
+ table {
+ font-family: 'csstest_noto';
+ }
+</style>
+
+<p>Test passes if both halves of each of the pairs below are identical:
+
+<table dir=rtl lang=ar>
+<tr><!-- alef, final form as it doesn't have a medial form -->
+ <td><span>&#x640;</span>&#x0627;<span>&#x640;</span>
+ <td><span>&#x640;</span>&#xFE8E;<span>&#x640;</span>
+<tr><!-- alef, final form -->
+ <td><span>&#x640;</span>&#x0627;
+ <td><span>&#x640;</span>&#xFE8E;
+<tr><!-- beh, initial form -->
+ <td>&#x0628;<span>&#x640;</span>
+ <td>&#xFE91;<span>&#x640;</span>
+<tr><!-- beh, medial form -->
+ <td><span>&#x640;</span>&#x0628;<span>&#x640;</span>
+ <td><span>&#x640;</span>&#xFE92;<span>&#x640;</span>
+<tr><!-- beh, final form -->
+ <td><span>&#x640;</span>&#x0628;
+ <td><span>&#x640;</span>&#xFE90;
+</table>