update tests

diff --git a/examples/BUILD b/examples/BUILD
index 40e5e7c..fd6e4c3 100644
--- a/examples/BUILD
+++ b/examples/BUILD

@@ -28,7 +28,6 @@
     ],
     deps = [
         "@bazel_tools//tools/bash/runfiles",
-        "@cgrindel_bazel_starlib//shlib/lib:assertions",
     ],
 )
 

diff --git a/examples/modify_example_test_runner.sh b/examples/modify_example_test_runner.sh
index 6042974..568a1c7 100755
--- a/examples/modify_example_test_runner.sh
+++ b/examples/modify_example_test_runner.sh

@@ -11,10 +11,10 @@
   { echo>&2 "ERROR: cannot find $f"; exit 1; }; f=; set -e
 # --- end runfiles.bash initialization v2 ---
 
-assertions_sh_location=cgrindel_bazel_starlib/shlib/lib/assertions.sh
-assertions_sh="$(rlocation "${assertions_sh_location}")" || \
-  (echo >&2 "Failed to locate ${assertions_sh_location}" && exit 1)
-source "${assertions_sh}"
+fail() {
+  echo >&2 "$@"
+  exit 1
+}
 
 create_scratch_dir_sh_location=rules_bazel_integration_test/tools/create_scratch_dir.sh
 create_scratch_dir_sh="$(rlocation "${create_scratch_dir_sh_location}")" || \

diff --git a/tests/tools_tests/BUILD b/tests/tools_tests/BUILD
index 7978040..c45e768 100644
--- a/tests/tools_tests/BUILD
+++ b/tests/tools_tests/BUILD

@@ -20,6 +20,5 @@
     }),
     deps = [
         "@bazel_tools//tools/bash/runfiles",
-        "@cgrindel_bazel_starlib//shlib/lib:assertions",
     ],
 )

diff --git a/tests/tools_tests/generate_assets_declaration_test.sh b/tests/tools_tests/generate_assets_declaration_test.sh
index 76549b4..ab19ac6 100755
--- a/tests/tools_tests/generate_assets_declaration_test.sh
+++ b/tests/tools_tests/generate_assets_declaration_test.sh

@@ -14,11 +14,6 @@
 
 # MARK - Locate Deps
 
-assertions_sh_location=cgrindel_bazel_starlib/shlib/lib/assertions.sh
-assertions_sh="$(rlocation "${assertions_sh_location}")" || \
-  (echo >&2 "Failed to locate ${assertions_sh_location}" && exit 1)
-source "${assertions_sh}"
-
 generate_assets_declaration_sh_location=buildifier_prebuilt/tools/generate_assets_declaration.sh
 generate_assets_declaration_sh="$(rlocation "${generate_assets_declaration_sh_location}")" || \
   (echo >&2 "Failed to locate ${generate_assets_declaration_sh_location}" && exit 1)
@@ -37,6 +32,17 @@
 # MARK - Test with Release Tag
 
 actual="$( "${generate_assets_declaration_sh}" "4.2.3" )"
+
+assert_match() {
+  local pattern="$1"
+  local actual="$2"
+  if ! echo "${actual}" | grep -qE "${pattern}"; then
+    echo >&2 "Expected to match '${pattern}' in output:"
+    echo >&2 "${actual}"
+    exit 1
+  fi
+}
+
 assert_match "version.*4.2.3" "${actual}"
 assert_match \
   "buildifier_darwin_amd64.*954ec397089344b1564e45dc095e9331e121eb0f20e72032fcc8e94de78e5663" \