Time the other filters at two lengths as well

The avatar checks held a 40000 byte address to half a second, twenty
times tighter than the readme budget that already failed on a slow
host, and in stub mode nearly all of that time went on the fake digest.
Link-commits and link-trailers had no check on a long input at all. The
readme checks' method moves into the harness so all four share it.

A single timing of each length let a busy host that took the CPU away
during the longer one make a linear pass look quadratic. The lengths
now take turns and the fastest timing of each counts, since a busy host
can slow one timing but rarely all five. A ratio under six ends the
turns at once, so only one near the bound of ten waits for all five.

1 file changed, 8 insertions, 8 deletions

diff --git a/tests/extensions/test-email-avatar.lua b/tests/extensions/test-email-avatar.luaindex 5929634..c9a9ec0 100644--- a/tests/extensions/test-email-avatar.lua+++ b/tests/extensions/test-email-avatar.lua@@ -101,14 +101,14 @@ h.contains("a name keeps the escaping cgit gave it", out, "> A &amp; B") h.excludes("and is not escaped again", out, "&amp;amp;")  -- A commit can carry any bytes in its address, and a log page runs the--- filter once per row, so the trim has to stay linear in a run of spaces.-local started = os.clock()-render("<a" .. string.rep(" ", 40000) .. "b>", "x")-h.check("a long run of inner spaces is trimmed quickly", os.clock() - started < 0.5)--started = os.clock()-render(string.rep("<", 40000), "x")-h.check("a long run of open brackets is unwrapped quickly", os.clock() - started < 0.5)+-- filter once per row, so trimming and unwrapping have to stay linear.+local function address_only(text)+	return (render(text, "x"))+end+h.stays_linear("a long run of inner spaces is trimmed in linear time", address_only,+	function(count) return "<a" .. string.rep(" ", count) .. "b>" end, 10000)+h.stays_linear("an address of open brackets is scanned in linear time", address_only,+	function(count) return string.rep("<", count) end, 10000)  h.check("text around the brackets is dropped", 	hash_of(render("x <author@example.com> y", "x")) == plain)
diff --git a/tests/extensions/test-email-avatar.lua b/tests/extensions/test-email-avatar.lua
index 5929634..c9a9ec0 100644
--- a/tests/extensions/test-email-avatar.lua
+++ b/tests/extensions/test-email-avatar.lua
@@ -101,14 +101,14 @@ h.contains("a name keeps the escaping cgit gave it", out, "> A &amp; B")
 h.excludes("and is not escaped again", out, "&amp;amp;")
 
 -- A commit can carry any bytes in its address, and a log page runs the
--- filter once per row, so the trim has to stay linear in a run of spaces.
-local started = os.clock()
-render("<a" .. string.rep(" ", 40000) .. "b>", "x")
-h.check("a long run of inner spaces is trimmed quickly", os.clock() - started < 0.5)
-
-started = os.clock()
-render(string.rep("<", 40000), "x")
-h.check("a long run of open brackets is unwrapped quickly", os.clock() - started < 0.5)
+-- filter once per row, so trimming and unwrapping have to stay linear.
+local function address_only(text)
+	return (render(text, "x"))
+end
+h.stays_linear("a long run of inner spaces is trimmed in linear time", address_only,
+	function(count) return "<a" .. string.rep(" ", count) .. "b>" end, 10000)
+h.stays_linear("an address of open brackets is scanned in linear time", address_only,
+	function(count) return string.rep("<", count) end, 10000)
 
 h.check("text around the brackets is dropped",
 	hash_of(render("x <author@example.com> y", "x")) == plain)