tests: use pattern matching to mask `ECONNREFUSED` messages

The second and third one of these in `test-http-proxy.t` was failing on Windows.
The others were found by grep and by failed tests when output was matched and an
attempt was made to emit the mask pattern.

The first clonebundles failure on Windows emitted:

    error fetching bundle: [WinError 10061] $ECONNREFUSED$

We should probably stringify that better to get rid of the "[WinError 10061]"
part.

tests/common-pattern.py

@@ -168,6 +168,12 substitutions = [
         # FormatMessage(WSAEADDRNOTAVAIL)
         br'The requested address is not valid in its context',
     ),
+    br'$ECONNREFUSED$': (
+        # strerror()
+        br'Connection refused',
+        # FormatMessage(WSAECONNREFUSED)
+        br'No connection could be made because the target machine actively refused it',
+    ),
 }
 
 for replace, msgs in _errors.items():

tests/test-clone.t

@@ -618,15 +618,10 Invalid URL
 
 No remote source
 
-#if windows
   $ hg clone http://$LOCALIP:3121/a b
-  abort: error: * (glob)
+  abort: error: $ECONNREFUSED$
   [100]
-#else
-  $ hg clone http://$LOCALIP:3121/a b
-  abort: error: *refused* (glob)
-  [100]
-#endif
+
   $ rm -rf b # work around bug with http clone
 
 

tests/test-clonebundles.t

@@ -78,7 +78,7 Server is not running aborts
   $ echo "http://localhost:$HGPORT1/bundle.hg" > server/.hg/clonebundles.manifest
   $ hg clone http://localhost:$HGPORT server-not-runner
   applying clone bundle from http://localhost:$HGPORT1/bundle.hg
-  error fetching bundle: (.* refused.*|Protocol not supported|(.* )?\$EADDRNOTAVAIL\$|.* No route to host) (re)
+  error fetching bundle: (.*\$ECONNREFUSED\$|Protocol not supported|(.* )?\$EADDRNOTAVAIL\$|.* No route to host) (re)
   abort: error applying bundle
   (if this error persists, consider contacting the server operator or disable clone bundles via "--config ui.clonebundles=false")
   [255]

tests/test-http-proxy.t

@@ -81,7 +81,7 bad host:port for proxy ("Protocol not s
 misconfigured hosts)
 
   $ http_proxy=localhost:$HGPORT2 hg clone --config http_proxy.always=True http://localhost:$HGPORT/ f
-  abort: error: (Connection refused|Protocol not supported|.* actively refused it|\$EADDRNOTAVAIL\$|No route to host) (re)
+  abort: error: (\$ECONNREFUSED\$|Protocol not supported|.* actively refused it|\$EADDRNOTAVAIL\$|No route to host) (re)
   [100]
 
 do not use the proxy if it is in the no list
@@ -99,7 +99,7 do not use the proxy if it is in the no
 proxy can't connect to server
 
   $ http_proxy=http://localhost:$HGPORT1/ hg --config http_proxy.always=True clone http://localhost:$HGPORT2/ h
-  abort: HTTP Error 404: Connection refused
+  abort: HTTP Error 404: $ECONNREFUSED$
   [100]
 
   $ cat proxy.log
@@ -118,5 +118,5 proxy can't connect to server
   * - - [*] "GET http://localhost:$HGPORT/?cmd=capabilities HTTP/1.1" - - (glob)
   $LOCALIP - - [$LOGDATE$] "GET http://localhost:$HGPORT/?cmd=batch HTTP/1.1" - - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
   $LOCALIP - - [$LOGDATE$] "GET http://localhost:$HGPORT/?cmd=getbundle HTTP/1.1" - - x-hgarg-1:bookmarks=1&$USUAL_BUNDLE_CAPS$&cg=1&common=0000000000000000000000000000000000000000&heads=83180e7845de420a1bb46896fd5fe05294f8d629&listkeys=bookmarks&phases=1 x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
-  * - - [*] code 404, message Connection refused (glob)
+  * - - [*] code 404, message $ECONNREFUSED$ (glob)
   $LOCALIP - - [$LOGDATE$] "GET http://localhost:$HGPORT2/?cmd=capabilities HTTP/1.1" 404 - (glob)

tests/test-https.t

@@ -490,7 +490,7 Test when proxy can't connect to server
 
   $ http_proxy=http://localhost:$HGPORT1/ hg -R copy-pull pull --insecure https://localhost:0/
   pulling from https://localhost:0/
-  abort: error: Tunnel connection failed: 404 (Connection refused|\$EADDRNOTAVAIL\$) (re)
+  abort: error: Tunnel connection failed: 404 (\$ECONNREFUSED\$|\$EADDRNOTAVAIL\$) (re)
   [100]
 
 

tests/test-lfs-serve-access.t

@@ -83,7 +83,7 Reasonable hint for a misconfigured blob
   [50]
 
   $ hg -R httpclone update default --config lfs.url=http://localhost:$HGPORT2/missing
-  abort: LFS error: *onnection *refused* (glob) (?)
+  abort: LFS error: $ECONNREFUSED$ (?)
   abort: LFS error: $EADDRNOTAVAIL$ (glob) (?)
   abort: LFS error: No route to host (?)
   (the "lfs.url" config may be used to override http://localhost:$HGPORT2/missing)