jupyter-r: update test

Formula/j/jupyter-r.rb

@@ -22,8 +22,6 @@ class JupyterR < Formula
   depends_on "r"
   depends_on "zeromq"
 
-  uses_from_macos "expect" => :test
-
   on_macos do
     depends_on "gettext"
   end
@@ -136,7 +134,11 @@ class JupyterR < Formula
     sha256 "da7e204d857370201f75a05fbd808a2f409d440cc96855bb8f48f4a5dd75405b"
 
     # Remove use of -flat_namespace.
-    patch :DATA
+    patch do
+      url "https://raw.githubusercontent.com/Homebrew/formula-patches/03cf8088210822aa2c1ab544ed58ea04c897d9c4/libtool/configure-pre-0.4.2.418-big_sur.diff"
+      sha256 "83af02f2aa2b746bb7225872cab29a253264be49db0ecebb12f841562d9a2923"
+      directory "src/zmqsrc"
+    end
   end
 
   resource "crayon" do
@@ -191,63 +193,29 @@ def install
     ENV["R_LIBS_SITE"] = lib/"R/site-library"
     assert_match " ir ", shell_output("#{jupyter} kernelspec list")
 
-    (testpath/"console.exp").write <<~EOS
-      spawn #{jupyter} console --kernel=ir
-      expect -timeout 60 "In "
-      send "print('Hello Homebrew')\r"
-      expect -timeout 60 "In "
-      send "exit\r"
-    EOS
-    output = shell_output("expect -f console.exp")
-    assert_match "R version #{r_version}", output
-    assert_match "Hello Homebrew", output
+    require "expect"
+    require "pty"
+    PTY.spawn(jupyter, "console", "--kernel=ir") do |r, w, pid|
+      timeout = 30
+      r.expect("In [1]:", timeout) do |result|
+        refute_nil result, "Expected In [1] prompt"
+        assert_match "R version #{r_version}", result.first
+      end
+      w.write "print('Hello Homebrew')\r"
+      r.expect("In [2]:", timeout) do |result|
+        refute_nil result, "Expected In [2] prompt"
+        assert_match '[1] "Hello Homebrew"', result.first
+      end
+      w.write "mean(c(1, 2, 3, 4))\r"
+      r.expect("In [3]:", timeout) do |result|
+        refute_nil result, "Expected In [3] prompt"
+        assert_match "[1] 2.5", result.first
+      end
+      w.write "quit()\r"
+    ensure
+      r.close
+      w.close
+      Process.wait(pid)
+    end
   end
 end
-
-__END__
---- a/src/zmqsrc/config/libtool.m4
-+++ b/src/zmqsrc/config/libtool.m4
-@@ -1045,16 +1045,11 @@ _LT_EOF
-       _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
-     darwin1.*)
-       _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
--    darwin*) # darwin 5.x on
--      # if running on 10.5 or later, the deployment target defaults
--      # to the OS version, if on x86, and 10.4, the deployment
--      # target defaults to 10.4. Don't you love it?
--      case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
--	10.0,*86*-darwin8*|10.0,*-darwin[[91]]*)
--	  _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
--	10.[[012]]*)
-+    darwin*)
-+      case ${MACOSX_DEPLOYMENT_TARGET},$host in
-+	10.[[012]],*|,*powerpc*)
- 	  _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
--	10.*)
-+	*)
- 	  _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
-       esac
-     ;;
---- a/src/zmqsrc/configure
-+++ b/src/zmqsrc/configure
-@@ -10686,16 +10686,11 @@ $as_echo "$lt_cv_ld_force_load" >&6; }
-       _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
-     darwin1.*)
-       _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
--    darwin*) # darwin 5.x on
--      # if running on 10.5 or later, the deployment target defaults
--      # to the OS version, if on x86, and 10.4, the deployment
--      # target defaults to 10.4. Don't you love it?
--      case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
--	10.0,*86*-darwin8*|10.0,*-darwin[91]*)
--	  _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
--	10.[012]*)
-+    darwin*)
-+      case ${MACOSX_DEPLOYMENT_TARGET},$host in
-+	10.[012],*|,*powerpc*)
- 	  _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
--	10.*)
-+	*)
- 	  _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
-       esac
-     ;;