chore: add insta snapshot example

Author: kormide

.bazelci/presubmit.yml

@@ -850,6 +850,18 @@ tasks:
     run_targets:
       - "//pkg_a:pkg_a_binary"
       - "//pkg_b:pkg_b_binary"
+
+  example_snapshot_test:
+    name: Snapshot test example
+    platform: ubuntu2204
+    working_directory: examples/snapshot_test
+    build_targets:
+      - "//..."
+    test_targets:
+      - "//..."
+    run_targets:
+      - "//:test_update_snapshots"
+
   ubuntu2204_bzlmod_bcr:
     name: bzlmod BCR presubmit
     platform: ubuntu2204

examples/snapshot_test/.gitignore

@@ -0,0 +1 @@
+/bazel-*

examples/snapshot_test/BUILD.bazel

@@ -0,0 +1,11 @@
+load("//:defs.bzl", "rust_snapshot_test")
+
+rust_snapshot_test(
+    name = "test",
+    srcs = ["test.rs"],
+    crate_root = "test.rs",
+    snapshots_dir = "snapshots",
+    deps = [
+        "@crate_index//:insta",
+    ],
+)

examples/snapshot_test/Cargo.lock

@@ -0,0 +1,12 @@
+[package]
+name = "snapshot_test"
+version = "0.0.0"
+edition = "2021"
+publish = false
+
+[[test]]
+name = "test"
+path = "test.rs"
+
+[dependencies]
+insta = "1.44.3"

examples/snapshot_test/Cargo.toml

@@ -0,0 +1,25 @@
+"""bazelbuild/rules_rust - bzlmod example"""
+
+module(
+    name = "snapshot_test_example",
+    version = "0.0.0",
+)
+
+bazel_dep(name = "rules_rust", version = "0.0.0")
+local_path_override(
+    module_name = "rules_rust",
+    path = "../..",
+)
+
+bazel_dep(name = "rules_shell", version = "0.6.1")
+
+crate = use_extension(
+    "@rules_rust//crate_universe:extensions.bzl",
+    "crate",
+)
+crate.from_cargo(
+    name = "crate_index",
+    cargo_lockfile = "//:Cargo.lock",
+    manifests = ["//:Cargo.toml"],
+)
+use_repo(crate, "crate_index")