diff --git a/martin/Cargo.toml b/martin/Cargo.toml
index 311af2e91..7958995d8 100644
--- a/martin/Cargo.toml
+++ b/martin/Cargo.toml
@@ -125,7 +125,7 @@ cargo-husky.workspace = true
 criterion.workspace = true
 ctor.workspace = true
 indoc.workspace = true
-insta = { workspace = true, features = ["json","yaml"] }
+insta = { workspace = true, features = ["json", "yaml"] }
 pprof.workspace = true
 rstest.workspace = true
 testcontainers-modules.workspace = true
diff --git a/tests/fixtures/sprites/expected/all_1.json b/martin/src/sprites/snapshots/martin__sprites__tests__all_1.json.snap
similarity index 84%
rename from tests/fixtures/sprites/expected/all_1.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__all_1.json.snap
index 7828c798e..b53975672 100644
--- a/tests/fixtures/sprites/expected/all_1.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__all_1.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "another_bicycle": {
     "height": 15,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__all_1.snap b/martin/src/sprites/snapshots/martin__sprites__tests__all_1.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__all_1.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/all_1.png b/martin/src/sprites/snapshots/martin__sprites__tests__all_1.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/all_1.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__all_1.snap.png
diff --git a/tests/fixtures/sprites/expected/all_1_sdf.json b/martin/src/sprites/snapshots/martin__sprites__tests__all_1_sdf.json.snap
similarity index 86%
rename from tests/fixtures/sprites/expected/all_1_sdf.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__all_1_sdf.json.snap
index 7a179b175..4632382fd 100644
--- a/tests/fixtures/sprites/expected/all_1_sdf.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__all_1_sdf.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "another_bicycle": {
     "height": 21,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__all_1_sdf.snap b/martin/src/sprites/snapshots/martin__sprites__tests__all_1_sdf.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__all_1_sdf.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/all_1_sdf.png b/martin/src/sprites/snapshots/martin__sprites__tests__all_1_sdf.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/all_1_sdf.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__all_1_sdf.snap.png
diff --git a/tests/fixtures/sprites/expected/all_2.json b/martin/src/sprites/snapshots/martin__sprites__tests__all_2.json.snap
similarity index 84%
rename from tests/fixtures/sprites/expected/all_2.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__all_2.json.snap
index b95ec54b2..f5ddf5d22 100644
--- a/tests/fixtures/sprites/expected/all_2.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__all_2.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "another_bicycle": {
     "height": 30,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__all_2.snap b/martin/src/sprites/snapshots/martin__sprites__tests__all_2.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__all_2.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/all_2.png b/martin/src/sprites/snapshots/martin__sprites__tests__all_2.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/all_2.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__all_2.snap.png
diff --git a/tests/fixtures/sprites/expected/all_2_sdf.json b/martin/src/sprites/snapshots/martin__sprites__tests__all_2_sdf.json.snap
similarity index 86%
rename from tests/fixtures/sprites/expected/all_2_sdf.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__all_2_sdf.json.snap
index 7da6e3238..7409f54f8 100644
--- a/tests/fixtures/sprites/expected/all_2_sdf.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__all_2_sdf.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "another_bicycle": {
     "height": 36,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__all_2_sdf.snap b/martin/src/sprites/snapshots/martin__sprites__tests__all_2_sdf.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__all_2_sdf.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/all_2_sdf.png b/martin/src/sprites/snapshots/martin__sprites__tests__all_2_sdf.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/all_2_sdf.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__all_2_sdf.snap.png
diff --git a/tests/fixtures/sprites/expected/src1_1.json b/martin/src/sprites/snapshots/martin__sprites__tests__src1_1.json.snap
similarity index 80%
rename from tests/fixtures/sprites/expected/src1_1.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__src1_1.json.snap
index 578634f50..2a80cc3b1 100644
--- a/tests/fixtures/sprites/expected/src1_1.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src1_1.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "another_bicycle": {
     "height": 15,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__src1_1.snap b/martin/src/sprites/snapshots/martin__sprites__tests__src1_1.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src1_1.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/src1_1.png b/martin/src/sprites/snapshots/martin__sprites__tests__src1_1.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/src1_1.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__src1_1.snap.png
diff --git a/tests/fixtures/sprites/expected/src1_1_sdf.json b/martin/src/sprites/snapshots/martin__sprites__tests__src1_1_sdf.json.snap
similarity index 83%
rename from tests/fixtures/sprites/expected/src1_1_sdf.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__src1_1_sdf.json.snap
index d90ee2d88..96a8ac98c 100644
--- a/tests/fixtures/sprites/expected/src1_1_sdf.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src1_1_sdf.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "another_bicycle": {
     "height": 21,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__src1_1_sdf.snap b/martin/src/sprites/snapshots/martin__sprites__tests__src1_1_sdf.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src1_1_sdf.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/src1_1_sdf.png b/martin/src/sprites/snapshots/martin__sprites__tests__src1_1_sdf.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/src1_1_sdf.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__src1_1_sdf.snap.png
diff --git a/tests/fixtures/sprites/expected/src1_2.json b/martin/src/sprites/snapshots/martin__sprites__tests__src1_2.json.snap
similarity index 80%
rename from tests/fixtures/sprites/expected/src1_2.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__src1_2.json.snap
index 7ac8efa9c..cb48d3008 100644
--- a/tests/fixtures/sprites/expected/src1_2.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src1_2.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "another_bicycle": {
     "height": 30,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__src1_2.snap b/martin/src/sprites/snapshots/martin__sprites__tests__src1_2.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src1_2.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/src1_2.png b/martin/src/sprites/snapshots/martin__sprites__tests__src1_2.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/src1_2.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__src1_2.snap.png
diff --git a/tests/fixtures/sprites/expected/src1_2_sdf.json b/martin/src/sprites/snapshots/martin__sprites__tests__src1_2_sdf.json.snap
similarity index 82%
rename from tests/fixtures/sprites/expected/src1_2_sdf.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__src1_2_sdf.json.snap
index 9b7683ec8..d90fcc91a 100644
--- a/tests/fixtures/sprites/expected/src1_2_sdf.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src1_2_sdf.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "another_bicycle": {
     "height": 36,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__src1_2_sdf.snap b/martin/src/sprites/snapshots/martin__sprites__tests__src1_2_sdf.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src1_2_sdf.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/src1_2_sdf.png b/martin/src/sprites/snapshots/martin__sprites__tests__src1_2_sdf.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/src1_2_sdf.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__src1_2_sdf.snap.png
diff --git a/tests/fixtures/sprites/expected/src2_1.json b/martin/src/sprites/snapshots/martin__sprites__tests__src2_1.json.snap
similarity index 57%
rename from tests/fixtures/sprites/expected/src2_1.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__src2_1.json.snap
index 33c5a847b..f15ce45c5 100644
--- a/tests/fixtures/sprites/expected/src2_1.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src2_1.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "bicycle": {
     "height": 15,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__src2_1.snap b/martin/src/sprites/snapshots/martin__sprites__tests__src2_1.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src2_1.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/src2_1.png b/martin/src/sprites/snapshots/martin__sprites__tests__src2_1.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/src2_1.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__src2_1.snap.png
diff --git a/tests/fixtures/sprites/expected/src2_1_sdf.json b/martin/src/sprites/snapshots/martin__sprites__tests__src2_1_sdf.json.snap
similarity index 61%
rename from tests/fixtures/sprites/expected/src2_1_sdf.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__src2_1_sdf.json.snap
index bf3f7792a..07de544de 100644
--- a/tests/fixtures/sprites/expected/src2_1_sdf.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src2_1_sdf.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "bicycle": {
     "height": 21,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__src2_1_sdf.snap b/martin/src/sprites/snapshots/martin__sprites__tests__src2_1_sdf.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src2_1_sdf.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/src2_1_sdf.png b/martin/src/sprites/snapshots/martin__sprites__tests__src2_1_sdf.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/src2_1_sdf.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__src2_1_sdf.snap.png
diff --git a/tests/fixtures/sprites/expected/src2_2.json b/martin/src/sprites/snapshots/martin__sprites__tests__src2_2.json.snap
similarity index 57%
rename from tests/fixtures/sprites/expected/src2_2.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__src2_2.json.snap
index b7ec269c2..e39146855 100644
--- a/tests/fixtures/sprites/expected/src2_2.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src2_2.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "bicycle": {
     "height": 30,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__src2_2.snap b/martin/src/sprites/snapshots/martin__sprites__tests__src2_2.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src2_2.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/src2_2.png b/martin/src/sprites/snapshots/martin__sprites__tests__src2_2.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/src2_2.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__src2_2.snap.png
diff --git a/tests/fixtures/sprites/expected/src2_2_sdf.json b/martin/src/sprites/snapshots/martin__sprites__tests__src2_2_sdf.json.snap
similarity index 61%
rename from tests/fixtures/sprites/expected/src2_2_sdf.json
rename to martin/src/sprites/snapshots/martin__sprites__tests__src2_2_sdf.json.snap
index 03636083d..460c843e6 100644
--- a/tests/fixtures/sprites/expected/src2_2_sdf.json
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src2_2_sdf.json.snap
@@ -1,3 +1,7 @@
+---
+source: martin/src/sprites/mod.rs
+expression: sprites.get_index()
+---
 {
   "bicycle": {
     "height": 36,
diff --git a/martin/src/sprites/snapshots/martin__sprites__tests__src2_2_sdf.snap b/martin/src/sprites/snapshots/martin__sprites__tests__src2_2_sdf.snap
new file mode 100644
index 000000000..44ea33d31
--- /dev/null
+++ b/martin/src/sprites/snapshots/martin__sprites__tests__src2_2_sdf.snap
@@ -0,0 +1,6 @@
+---
+source: martin/src/sprites/mod.rs
+expression: png
+extension: png
+snapshot_kind: binary
+---
diff --git a/tests/fixtures/sprites/expected/src2_2_sdf.png b/martin/src/sprites/snapshots/martin__sprites__tests__src2_2_sdf.snap.png
similarity index 100%
rename from tests/fixtures/sprites/expected/src2_2_sdf.png
rename to martin/src/sprites/snapshots/martin__sprites__tests__src2_2_sdf.snap.png