55_cache.bats: update build cache paper references

test/build/55_cache.bats

@@ -26,9 +26,13 @@ setup () {
 }
 
 
-### Test cases that go in the paper ###
+### Test cases for build cache paper figures (DOI: 10.1145/3624062.3624585) ###
 
-@test "${tag}: §3.1 empty cache" {
+# Not all of these ended up as figures in the published paper, but I’m leaving
+# them here because they were targeted to the paper and were used in some
+# versions. If they are in the published paper, the figure number is noted.
+
+@test "${tag}: Fig. 2: empty cache" {
     rm -Rf --one-file-system "$CH_IMAGE_STORAGE"
 
     blessed_tree=$(cat << EOF
@@ -44,7 +48,7 @@ EOF
 }
 
 
-@test "${tag}: §3.2.1 initial pull" {
+@test "${tag}: Fig. 3: initial pull" {
     ch-image pull alpine:3.17
 
     blessed_tree=$(cat << 'EOF'
@@ -59,7 +63,7 @@ EOF
 }
 
 
-@test "${tag}: §3.5 FROM" {
+@test "${tag}: FROM" {
     # FROM pulls
     ch-image build-cache --reset
     run ch-image build -v -t d -f bucache/from.df .
@@ -108,7 +112,7 @@ EOF
 }
 
 
-@test "${tag}: §3.3.1 Dockerfile A" {
+@test "${tag}: Fig. 4: a.df" {
     ch-image build-cache --reset
 
     ch-image build -t a -f bucache/a.df .
@@ -127,7 +131,7 @@ EOF
 }
 
 
-@test "${tag}: §3.3.2 Dockerfile B" {
+@test "${tag}: Fig. 5: b.df" {
     ch-image build-cache --reset
 
     ch-image build -t a -f bucache/a.df .
@@ -148,7 +152,7 @@ EOF
 }
 
 
-@test "${tag}: §3.3.3 Dockerfile C" {
+@test "${tag}: Fig. 6: c.df" {
     ch-image build-cache --reset
 
     ch-image build -t a -f bucache/a.df .
@@ -173,7 +177,7 @@ EOF
 }
 
 
-@test "${tag}: rebuild A" {
+@test "${tag}: rebuild a.df" {
     # Forcing a rebuild show produce a new pair of FOO and BAR commits from
     # from the alpine branch.
     blessed_out=$(cat << 'EOF'
@@ -197,7 +201,7 @@ EOF
 }
 
 
-@test "${tag}: rebuild B" {
+@test "${tag}: rebuild b.df" {
     # Rebuild of B. Since A was rebuilt in the last test, and because
     # the rebuild behavior only forces misses on non-FROM instructions, it
     # should now be based on A's new commits.
@@ -222,7 +226,7 @@ EOF
 }
 
 
-@test "${tag}: rebuild C" {
+@test "${tag}: c.df" {
     # Rebuild C. Since C doesn’t reference img_a (like img_b does) rebuilding
     # causes a miss on FOO. Thus C makes new FOO and QUX commits.
     #
@@ -255,7 +259,7 @@ EOF
 }
 
 
-@test "${tag}: §3.7 change then revert" {
+@test "${tag}: Fig. 7: change then revert" {
     ch-image build-cache --reset
 
     ch-image build -t e -f bucache/a.df .
@@ -296,7 +300,7 @@ EOF
 }
 
 
-@test "${tag}: §3.4.1 two pulls, same" {
+@test "${tag}: two pulls, same" {
     ch-image build-cache --reset
     ch-image pull alpine:3.17
     ch-image pull alpine:3.17
@@ -313,7 +317,7 @@ EOF
 }
 
 
-@test "${tag}: §3.4.2 two pulls, different" {
+@test "${tag}: two pulls, different" {
     localregistry_init
     unset CH_IMAGE_AUTH  # don’t give local creds to Docker Hub
 
@@ -561,7 +565,7 @@ EOF
 }
 
 
-@test "${tag}: §3.6 rebuild" {
+@test "${tag}: Fig. 8: rebuild" {
     ch-image build-cache --reset
 
     # Build. Mode should not matter here, but we use enabled because that’s