fix: typos and backwards compatibility

- forgot again assertContains isn't supported on bionic's shunit2

drive.inc

@@ -34,7 +34,7 @@ function partition_list
 {
     local drive="$1"
     partitions="$(parted -m "$drive" -- print| \
-        awk --field-separator=":" \
+        awk -F: \
         '{if (NR > 2)
             print $1
         }')"
@@ -43,7 +43,7 @@ function partition_list
 function find_unused
 {
     local drive="$1"
-    unused="$(parted -m "$drive" -- print|awk --field-separator=":" \
+    unused="$(parted -m "$drive" -- print|awk -F: \
         '{if (NR > 2 && $1 >= 2 && $6 == "root unused") {
             print $1
          }}')|head -1"
@@ -52,7 +52,7 @@ function find_unused
 function find_oldest
 {
     local drive="$1"
-    oldest="$(parted -m "$drive" -- print|awk --field-separator=":" \
+    oldest="$(parted -m "$drive" -- print|awk -F: \
         'BEGIN 
             {min="ZZZZ"}
             {if (NR > 2 && $1 >= 2 && $1 <= 4 &&
@@ -66,7 +66,7 @@ function find_oldest
 function find_newest
 {
     local drive="$1"
-    newest="$(parted -m "$drive" -- print|awk --field-separator=":" \
+    newest="$(parted -m "$drive" -- print|awk -F: \
         'BEGIN
             {max=""}
              {if (NR > 2 && $1 >= 2 && $1 <= 4 && 
@@ -81,7 +81,7 @@ function version_from_partnum
 {
     local drive="$1"
     local partnum="$2"
-    version="$(parted -m "$drive" -- print|awk --field-separator=":" \
+    version="$(parted -m "$drive" -- print|awk -F: \
         '{if (NR > 2 && $1 == "'"$partnum"') {
              print $6
          }}')"

tests/drive.sh

@@ -30,7 +30,7 @@ function test_partitioning()
     assertEquals "$max_version" "$version"
 
     find_unused "$img"
-    assertContains " 3 4 " "$unused"
+    assertEquals 3 "$unused"
 
     rename_partition "$img" 3 "root $min_version"
     find_oldest "$img"
@@ -40,7 +40,7 @@ function test_partitioning()
     find_newest "$img"
     assertEquals "$max_version" "$newest"
 
-    partition-list "$img"
+    partition_list "$img"
     assertEquals "1 2 3 4 5" "$partitions"
 
     rm -f "$img"