1 files changed, 127 insertions, 0 deletions
diff --git a/testing/web-platform/tests/infrastructure/assumptions/tools/ahem-generate-table.py b/testing/web-platform/tests/infrastructure/assumptions/tools/ahem-generate-table.py
new file mode 100644
index 0000000000..314279f671
--- /dev/null
+++ b/testing/web-platform/tests/infrastructure/assumptions/tools/ahem-generate-table.py
@@ -0,0 +1,127 @@
+import itertools
+import unicodedata
+
+from fontTools.ttLib import TTFont
+
+try:
+    chr(0x100)
+except ValueError:
+    chr = unichr
+
+def grouper(n, iterable):
+    """
+    >>> list(grouper(3, 'ABCDEFG'))
+    [['A', 'B', 'C'], ['D', 'E', 'F'], ['G']]
+    """
+    iterable = iter(iterable)
+    return iter(lambda: list(itertools.islice(iterable, n)), [])
+
+ttf = TTFont("../../../fonts/Ahem.ttf")
+
+chars = {char for table in ttf['cmap'].tables for char in table.cmap.keys()}
+
+# exclude chars that can't be represented as HTML numeric character refs
+chars = chars - (set(range(0x80, 0x9F+1)) | {0x00})
+
+chars_sorted = sorted(chars)
+
+per_row = 17
+
+
+doctype = "<!doctype html>"
+title = "<title>Ahem checker</title>"
+style_open = """
+<style>
+* {
+  padding: 0;
+  margin: 0;
+  border: none;
+}
+td {
+  width: 34px;
+}""".strip()
+style_close = "</style>"
+style_font_face = """
+@font-face {
+  font-family: Ahem;
+  src: url("../../fonts/Ahem.ttf");
+}""".strip()
+style_table_font_specified = """
+table {
+  font: 15px/1 Ahem;
+  border-collapse: separate;
+  border-spacing: 1px;
+  table-layout: fixed;
+}""".strip()
+style_table_font_unspecified = """
+table {
+  font-size: 15px;
+  line-height: 1;
+  border-collapse: separate;
+  border-spacing: 1px;
+  table-layout: fixed;
+}""".strip()
+
+
+def build_header(is_test, rel, href):
+    rv = [doctype, title]
+
+    if rel != None and href != None:
+        rv.append('<link rel="%s" href="%s">' % (rel, href))
+
+    rv.append(style_open)
+
+    if not is_test:
+        if rel == None and href == None:
+            # ahem-notref.html
+            rv.append(style_table_font_unspecified)
+        else:
+            # ahem-ref.html
+            rv.append(style_font_face)
+            rv.append(style_table_font_specified)
+    else:
+        # ahem.html
+        rv.append(style_table_font_specified)
+
+    rv.append(style_close)
+
+    return "\n".join(rv)
+
+
+def build_table():
+    rv = ["\n"]
+
+    rv.append("<table>\n")
+    for row in grouper(per_row, chars_sorted):
+        rv.append(" " * 4 + "<tr>\n")
+        for codepoint in row:
+            assert codepoint <= 0xFFFF
+            try:
+                name = unicodedata.name(chr(codepoint))
+            except ValueError:
+                rv.append(" " * 8 + "<td>&#x%04X;x <!-- U+%04X -->\n" % (codepoint, codepoint))
+            else:
+                rv.append(" " * 8 + "<td>&#x%04X;x <!-- U+%04X: %s -->\n" % (codepoint, codepoint, name))
+    rv.append("</table>\n")
+
+    return "".join(rv)
+
+
+cases = [
+    # file, is_test, rel
+    ("../ahem.html", True, "match"),
+    ("../ahem-ref.html", False, "mismatch"),
+    ("../ahem-notref.html", False, None),
+]
+
+table = build_table()
+
+for index, case in enumerate(cases):
+    next_index = index + 1
+    file, is_test, rel = case
+    href = cases[next_index][0][3:] if next_index < len(cases) else None
+    header = build_header(is_test, rel, href)
+
+    with open(file, "w") as file:
+        file.write("%s%s" % (header, table))
+