From: Michael G. Schwern <schwern@pobox.com>
Date: Wed, 5 Sep 2001 19:16:31 +0000 (-0400)
Subject: Tests for CGI::Carp
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=fa8e8936010bb1bdcbe001d0297ba7995b127cd5;p=p5sagit%2Fp5-mst-13.2.git

Tests for CGI::Carp
Message-ID: <20010905191631.E11386@blackrider>

p4raw-id: //depot/perl@11897
---

diff --git a/MANIFEST b/MANIFEST
index a515969..e81d6ec 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -800,6 +800,7 @@ lib/CGI/Pretty.pm		Output nicely formatted HTML
 lib/CGI/Push.pm			Support for server push
 lib/CGI/Switch.pm		Simple interface for multiple server types
 lib/CGI/t/apache.t              See if CGI::Apache still loads
+lib/CGI/t/carp.t                See if CGI::Carp works
 lib/CGI/t/cookie.t              See if CGI::Cookie works
 lib/CGI/t/form.t		See if CGI.pm works
 lib/CGI/t/function.t		See if CGI.pm works
diff --git a/lib/CGI/t/carp.t b/lib/CGI/t/carp.t
new file mode 100644
index 0000000..8415816
--- /dev/null
+++ b/lib/CGI/t/carp.t
@@ -0,0 +1,263 @@
+# -*- Mode: cperl; coding: utf-8; cperl-indent-level: 2 -*-
+#!/usr/local/bin/perl -w
+
+use strict;
+use lib qw(t/lib);
+use Test::More tests => 42;
+use IO::Handle;
+
+BEGIN { use_ok('CGI::Carp') };
+
+#-----------------------------------------------------------------------------
+# Test id
+#-----------------------------------------------------------------------------
+
+# directly invoked
+my $expect_f = __FILE__;
+my $expect_l = __LINE__ + 1;
+my ($file, $line, $id) = CGI::Carp::id(0);
+is($file, $expect_f, "file");
+is($line, $expect_l, "line");
+is($id, "carp.t", "id");
+
+# one level of indirection
+sub id1 { my $level = shift; return CGI::Carp::id($level); };
+
+$expect_l = __LINE__ + 1;
+($file, $line, $id) = id1(1);
+is($file, $expect_f, "file");
+is($line, $expect_l, "line");
+is($id, "carp.t", "id");
+
+# two levels of indirection
+sub id2 { my $level = shift; return id1($level); };
+
+$expect_l = __LINE__ + 1;
+($file, $line, $id) = id2(2);
+is($file, $expect_f, "file");
+is($line, $expect_l, "line");
+is($id, "carp.t", "id");
+
+#-----------------------------------------------------------------------------
+# Test stamp
+#-----------------------------------------------------------------------------
+
+my $stamp = "/^\\[
+      ([a-z]{3}\\s){2}\\s?
+      [\\s\\d:]+
+      \\]\\s$id:/ix";
+
+like(CGI::Carp::stamp(),
+     $stamp,
+     "Time in correct format");
+
+sub stamp1 {return CGI::Carp::stamp()};
+sub stamp2 {return stamp1()};
+
+like(stamp2(), $stamp, "Time in correct format");
+
+#-----------------------------------------------------------------------------
+# Test warn and _warn
+#-----------------------------------------------------------------------------
+
+# set some variables to control what's going on.
+$CGI::Carp::WARN = 0;
+$CGI::Carp::EMIT_WARNINGS = 0;
+@CGI::Carp::WARNINGS = ();
+my $q_file = quotemeta($file);
+
+
+# Test that realwarn is called
+{
+  local $^W = 0;
+  eval "sub CGI::Carp::realwarn {return 'Called realwarn'};";
+}
+
+$expect_l = __LINE__ + 1;
+is(CGI::Carp::warn("There is a problem"),
+   "Called realwarn",
+   "CGI::Carp::warn calls CORE::warn");
+is(@CGI::Carp::WARNINGS, 0, "_warn not called");
+
+# Test that message is constructed correctly
+eval 'sub CGI::Carp::realwarn {my $mess = shift; return $mess};';
+
+$expect_l = __LINE__ + 1;
+like(CGI::Carp::warn("There is a problem"),
+   "/] $id: There is a problem at $q_file line $expect_l.".'$/',
+   "CGI::Carp::warn builds correct message");
+is(@CGI::Carp::WARNINGS, 0, "_warn not called");
+
+# Test that _warn is called at the correct time
+$CGI::Carp::WARN = 1;
+
+$expect_l = __LINE__ + 1;
+like(CGI::Carp::warn("There is a problem"),
+   "/] $id: There is a problem at $q_file line $expect_l.".'$/',
+   "CGI::Carp::warn builds correct message");
+
+is(@CGI::Carp::WARNINGS, 1, "_warn now called");
+like($CGI::Carp::WARNINGS[0],
+   "/There is a problem at $q_file line $expect_l.".'$/',
+   "CGI::Carp::WARNINGS has correct message (without stamp)");
+
+#-----------------------------------------------------------------------------
+# Test ineval
+#-----------------------------------------------------------------------------
+
+ok(!CGI::Carp::ineval, 'ineval returns false when not in eval');
+eval {ok(CGI::Carp::ineval, 'ineval returns true when in eval');};
+
+#-----------------------------------------------------------------------------
+# Test die
+#-----------------------------------------------------------------------------
+
+# set some variables to control what's going on.
+$CGI::Carp::WRAP = 0;
+
+$expect_l = __LINE__ + 1;
+eval { CGI::Carp::die('There is a problem'); };
+like($@,
+     '/^There is a problem/',
+     'CGI::Carp::die calls CORE::die without altering argument in eval');
+
+# Test that realwarn is called
+{
+  local $^W = 0;
+  eval 'sub CGI::Carp::realdie {my $mess = shift; return $mess};';
+}
+
+like(CGI::Carp::die('There is a problem'),
+     $stamp,
+     'CGI::Carp::die calls CORE::die, but adds stamp');
+
+#-----------------------------------------------------------------------------
+# Test set_message
+#-----------------------------------------------------------------------------
+
+is(CGI::Carp::set_message('My new Message'),
+   'My new Message',
+   'CGI::Carp::set_message returns new message');
+
+is($CGI::Carp::CUSTOM_MSG,
+   'My new Message',
+   'CGI::Carp::set_message message set correctly');
+
+# set the message back to the empty string so that the tests later
+# work properly.
+CGI::Carp::set_message(''),
+
+#-----------------------------------------------------------------------------
+# Test warnings_to_browser
+#-----------------------------------------------------------------------------
+
+CGI::Carp::warningsToBrowser(0);
+is($CGI::Carp::EMIT_WARNINGS, 0, "Warnings turned off");
+unless( is(@CGI::Carp::WARNINGS, 1, "_warn not called") ) {
+  print join "\n", map "'$_'", @CGI::Carp::WARNINGS;
+}
+
+# turn off STDOUT (prevents spurious warnings to screen
+tie *STDOUT, 'StoreStuff' or die "Can't tie STDOUT";
+CGI::Carp::warningsToBrowser(1);
+my $fake_out = join '', <STDOUT>;
+untie *STDOUT;
+
+open(STDOUT, ">&REAL_STDOUT");
+is( $fake_out, "<!-- warning: There is a problem at $0 line 95. -->\n",
+                        'warningsToBrowser() on' );
+
+is($CGI::Carp::EMIT_WARNINGS, 1, "Warnings turned off");
+is(@CGI::Carp::WARNINGS, 0, "_warn is called");
+
+#-----------------------------------------------------------------------------
+# Test fatals_to_browser
+#-----------------------------------------------------------------------------
+
+package StoreStuff;
+
+sub TIEHANDLE {
+  my $class = shift;
+  bless [], $class;
+}
+
+sub PRINT {
+  my $self = shift;
+  push @$self, @_;
+}
+
+sub READLINE {
+  my $self = shift;
+  shift @$self;
+}
+
+package main;
+
+tie *STDOUT, "StoreStuff";
+
+# do tests
+my @result;
+
+CGI::Carp::fatalsToBrowser();
+$result[0] .= $_ while (<STDOUT>);
+
+CGI::Carp::fatalsToBrowser('Message to the world');
+$result[1] .= $_ while (<STDOUT>);
+
+$ENV{SERVER_ADMIN} = 'foo@bar.com';
+CGI::Carp::fatalsToBrowser();
+$result[2] .= $_ while (<STDOUT>);
+
+CGI::Carp::set_message('Override the message passed in'),
+
+CGI::Carp::fatalsToBrowser('Message to the world');
+$result[3] .= $_ while (<STDOUT>);
+CGI::Carp::set_message(''),
+delete $ENV{SERVER_ADMIN};
+
+# now restore STDOUT
+untie *STDOUT;
+
+
+like($result[0],
+     '/Content-type: text/html/',
+     "Default string has header");
+
+ok($result[0] !~ /Message to the world/, "Custom message not in default string");
+
+like($result[1],
+    '/Message to the world/',
+    "Custom Message appears in output");
+
+ok($result[0] !~ /foo\@bar.com/, "Server Admin does not appear in default message");
+
+like($result[2],
+    '/foo@bar.com/',
+    "Server Admin appears in output");
+
+like($result[3],
+     '/Message to the world/',
+     "Custom message not in result");
+
+like($result[3],
+     '/Override the message passed in/',
+     "Correct message in string");
+
+#-----------------------------------------------------------------------------
+# Test to_filehandle
+#-----------------------------------------------------------------------------
+
+sub buffer {
+  CGI::Carp::to_filehandle (@_);
+}
+
+tie *STORE, "StoreStuff";
+
+require FileHandle;
+my $fh = FileHandle->new;
+
+ok( defined buffer(\*STORE),       '\*STORE returns proper filehandle');
+ok( defined buffer( $fh ),         '$fh returns proper filehandle');
+ok( defined buffer('::STDOUT'),    'STDIN returns proper filehandle');
+ok( defined buffer(*main::STDOUT), 'STDIN returns proper filehandle');
+ok(!defined buffer("WIBBLE"),      '"WIBBLE" doesn\'t returns proper filehandle');