Fix searchpath and module location for pg_rewind and ssl TAP tests

The modules RewindTest.pm and ServerSetup.pm are really only useful for
TAP tests, so they really belong in the TAP test directories. In
addition, ServerSetup.pm is renamed to SSLServer.pm.

The test scripts have their own directories added to the search path so
that the relocated modules will be found, regardless of where the tests
are run from, even on modern perl where "." is no longer in the
searchpath.

Discussion: https://postgr.es/m/e4b0f366-269c-73c3-9c90-d9cb0f4db1f9@2ndQuadrant.com

Backpatch as appropriate to 9.5

9 files changed, 28 insertions, 3 deletions

diff --git a/src/bin/pg_rewind/t/001_basic.pl b/src/bin/pg_rewind/t/001_basic.pl
index 53dbf45be29..115192170e5 100644
--- a/src/bin/pg_rewind/t/001_basic.pl
+++ b/src/bin/pg_rewind/t/001_basic.pl
@@ -3,6 +3,9 @@ use warnings;
 use TestLib;
 use Test::More tests => 10;
 
+use FindBin;
+use lib $FindBin::RealBin;
+
 use RewindTest;
 
 sub run_test
diff --git a/src/bin/pg_rewind/t/002_databases.pl b/src/bin/pg_rewind/t/002_databases.pl
index 2c9e4278311..6dc05720a1e 100644
--- a/src/bin/pg_rewind/t/002_databases.pl
+++ b/src/bin/pg_rewind/t/002_databases.pl
@@ -3,6 +3,9 @@ use warnings;
 use TestLib;
 use Test::More tests => 6;
 
+use FindBin;
+use lib $FindBin::RealBin;
+
 use RewindTest;
 
 sub run_test
diff --git a/src/bin/pg_rewind/t/003_extrafiles.pl b/src/bin/pg_rewind/t/003_extrafiles.pl
index 496f38c4570..c4040bd5620 100644
--- a/src/bin/pg_rewind/t/003_extrafiles.pl
+++ b/src/bin/pg_rewind/t/003_extrafiles.pl
@@ -7,6 +7,9 @@ use Test::More tests => 4;
 
 use File::Find;
 
+use FindBin;
+use lib $FindBin::RealBin;
+
 use RewindTest;
 
 
diff --git a/src/bin/pg_rewind/t/004_pg_xlog_symlink.pl b/src/bin/pg_rewind/t/004_pg_xlog_symlink.pl
index 280eceb9929..ed1ddb6b60c 100644
--- a/src/bin/pg_rewind/t/004_pg_xlog_symlink.pl
+++ b/src/bin/pg_rewind/t/004_pg_xlog_symlink.pl
@@ -17,6 +17,9 @@ else
 	plan tests => 4;
 }
 
+use FindBin;
+use lib $FindBin::RealBin;
+
 use RewindTest;
 
 sub run_test
diff --git a/src/bin/pg_rewind/t/005_same_timeline.pl b/src/bin/pg_rewind/t/005_same_timeline.pl
index 0e334ee191a..40dbc44caa3 100644
--- a/src/bin/pg_rewind/t/005_same_timeline.pl
+++ b/src/bin/pg_rewind/t/005_same_timeline.pl
@@ -3,6 +3,9 @@ use warnings;
 use TestLib;
 use Test::More tests => 1;
 
+use FindBin;
+use lib $FindBin::RealBin;
+
 use RewindTest;
 
 # Test that running pg_rewind if the two clusters are on the same
diff --git a/src/bin/pg_rewind/RewindTest.pm b/src/bin/pg_rewind/t/RewindTest.pm
index 85cae7e47b1..85cae7e47b1 100644
--- a/src/bin/pg_rewind/RewindTest.pm
+++ b/src/bin/pg_rewind/t/RewindTest.pm
diff --git a/src/test/ssl/t/001_ssltests.pl b/src/test/ssl/t/001_ssltests.pl
index 915007805e5..2f6dfad23c4 100644
--- a/src/test/ssl/t/001_ssltests.pl
+++ b/src/test/ssl/t/001_ssltests.pl
@@ -3,9 +3,14 @@ use warnings;
 use PostgresNode;
 use TestLib;
 use Test::More;
-use ServerSetup;
+
 use File::Copy;
 
+use FindBin;
+use lib $FindBin::RealBin;
+
+use SSLServer;
+
 if ($ENV{with_openssl} eq 'yes')
 {
 	plan tests => 71;
diff --git a/src/test/ssl/t/002_scram.pl b/src/test/ssl/t/002_scram.pl
index d45b9c5db3a..e636efa54dc 100644
--- a/src/test/ssl/t/002_scram.pl
+++ b/src/test/ssl/t/002_scram.pl
@@ -5,9 +5,14 @@ use warnings;
 use PostgresNode;
 use TestLib;
 use Test::More;
-use ServerSetup;
+
 use File::Copy;
 
+use FindBin;
+use lib $FindBin::RealBin;
+
+use SSLServer;
+
 if ($ENV{with_openssl} ne 'yes')
 {
 	plan skip_all => 'SSL not supported by this build';
diff --git a/src/test/ssl/ServerSetup.pm b/src/test/ssl/t/SSLServer.pm
index 5acba52310f..b1b5b7f0b34 100644
--- a/src/test/ssl/ServerSetup.pm
+++ b/src/test/ssl/t/SSLServer.pm
@@ -24,7 +24,7 @@
 # explicitly because an invalid sslcert or sslrootcert, respectively,
 # causes those to be ignored.)
 
-package ServerSetup;
+package SSLServer;
 
 use strict;
 use warnings;