1 files changed, 74 insertions, 0 deletions
diff --git a/t/prepend_file.t b/t/prepend_file.t
new file mode 100644
index 0000000..ec3c8bb
--- /dev/null
+++ b/t/prepend_file.t
@@ -0,0 +1,74 @@
+
+use strict ;
+use warnings ;
+
+use lib qw(t) ;
+
+use File::Slurp qw( read_file write_file prepend_file ) ;
+use Test::More ;
+
+use TestDriver ;
+
+my $file = 'prepend_file' ;
+my $existing_data = <<PRE ;
+line 1
+line 2
+more
+PRE
+
+my $tests = [
+	{
+		name	=> 'prepend null',
+		sub	=> \&prepend_file,
+		prepend_data	=> '',
+		pretest	=> sub {
+			my( $test ) = @_ ;
+			write_file( $file, $existing_data ) ;
+			my $prepend_data = $test->{prepend_data} ;
+			$test->{args} = [
+				$file,
+				$prepend_data,
+			] ;
+			$test->{expected} = "$prepend_data$existing_data" ;
+		},
+		posttest => sub { $_[0]->{result} = read_file( $file ) },
+	},
+	{
+		name	=> 'prepend line',
+		sub	=> \&prepend_file,
+		prepend_data => "line 0\n",
+		pretest	=> sub {
+			my( $test ) = @_ ;
+			write_file( $file, $existing_data ) ;
+			my $prepend_data = $test->{prepend_data} ;
+			$test->{args} = [
+				$file,
+				$prepend_data,
+			] ;
+			$test->{expected} = "$prepend_data$existing_data" ;
+		},
+		posttest => sub { $_[0]->{result} = read_file( $file ) },
+	},
+	{
+		name	=> 'prepend partial line',
+		sub	=> \&prepend_file,
+		prepend_data => 'partial line',
+		pretest	=> sub {
+			my( $test ) = @_ ;
+			write_file( $file, $existing_data ) ;
+			my $prepend_data = $test->{prepend_data} ;
+			$test->{args} = [
+				$file,
+				$prepend_data,
+			] ;
+			$test->{expected} = "$prepend_data$existing_data" ;
+		},
+		posttest => sub { $_[0]->{result} = read_file( $file ) },
+	},
+] ;
+
+test_driver( $tests ) ;
+
+unlink $file ;
+
+exit ;