Make 001 accept multiple lines and empty lines

exercises/001-two-fer/empty-lines.txt

@@ -0,0 +1,2 @@
+
+

exercises/001-two-fer/one-name-and-empty-lines.txt

@@ -0,0 +1,3 @@
+
+Pierre
+

exercises/001-two-fer/tests.bats

@@ -18,14 +18,14 @@ setup() {
 }
 
 @test "empty file given" {
-  run awk -f $AWK_FILE $TEST_FOLDER/empty.txt
+  run awk -f $AWK_FILE $TEST_FOLDER/empty-file.txt
 
   assert_success
   assert_output "One for you, one for me."
 }
 
 @test "a name given" {
-  run awk -f $AWK_FILE $TEST_FOLDER/one.txt
+  run awk -f $AWK_FILE $TEST_FOLDER/one-name.txt
 
   assert_success
   assert_output "One for Alice, one for me."
@@ -37,3 +37,38 @@ setup() {
   assert_success
   assert_output "One for Mary Ann, one for me."
 }
+
+@test "empty lines" {
+  run awk -f $AWK_FILE $TEST_FOLDER/empty-lines.txt
+
+  assert_success
+  assert_line --index 0 "One for you, one for me."
+  assert_line --index 1 "One for you, one for me."
+}
+
+@test "name with empty lines" {
+  run awk -f $AWK_FILE $TEST_FOLDER/one-name-and-empty-lines.txt
+
+  assert_success
+  assert_line --index 0 "One for you, one for me."
+  assert_line --index 1 "One for Pierre, one for me."
+  assert_line --index 2 "One for you, one for me."
+}
+
+@test "two names" {
+  run awk -f $AWK_FILE $TEST_FOLDER/two-names.txt
+
+  assert_success
+  assert_line --index 0 "One for Alice, one for me."
+  assert_line --index 1 "One for Mary Ann, one for me."
+}
+
+@test "two names and empty lines" {
+  run awk -f $AWK_FILE $TEST_FOLDER/two-names-and-empty-lines.txt
+
+  assert_success
+  assert_line --index 0 "One for you, one for me."
+  assert_line --index 1 "One for Alice, one for me."
+  assert_line --index 2 "One for you, one for me."
+  assert_line --index 3 "One for Mary Ann, one for me."
+}

exercises/001-two-fer/two-fer.awk

@@ -1,4 +1,5 @@
-END {
-  name = length($0) ? $0 : "you";
-  print "One for " name ", one for me."
-}
+# NF = Number of Fields in current record
+# NR = Number of the current Record
+
+{ print "One for " (NF ? $0 : "you") ", one for me." }
+END { if (!NR) print "One for you, one for me." }

exercises/001-two-fer/two-names-and-empty-lines.txt

@@ -0,0 +1,4 @@
+
+Alice
+
+Mary Ann

exercises/001-two-fer/two-names.txt

@@ -0,0 +1,2 @@
+Alice
+Mary Ann