diff --git a/packages/independent/snapshot/src/side_effects/snapshot_tests.js b/packages/independent/snapshot/src/side_effects/snapshot_tests.js
index d7e6840449..e414c5c1b7 100644
--- a/packages/independent/snapshot/src/side_effects/snapshot_tests.js
+++ b/packages/independent/snapshot/src/side_effects/snapshot_tests.js
@@ -12,6 +12,11 @@ import { renderSideEffects, renderSmallLink } from "./render_side_effects.js";
  * @param {Object} snapshotTestsOptions
  * @param {string|url} snapshotTestsOptions.outFilePattern
  * @param {string|url} snapshotTestsOptions.rootDirectoryUrl
+ * @param {Object} [snapshotTestsOptions.executionEffects]
+ * @param {boolean} [snapshotTestsOptions.executionEffects.catch=true]
+ *        Any error thrown by test function is detected and added to side effects
+ * @param {boolean} [snapshotTestsOptions.executionEffects.return=true]
+ *        Test function return value is added to side effects
  * @param {Object} [snapshotTestsOptions.filesystemActions]
  *        Control what to do when there is a file side effect
  *        "compare", "compare_presence_only", "undo", "ignore"
diff --git a/tests/build/new_url_directory/_new_url_directory.test.mjs/0_error/0_error.md b/tests/build/new_url_directory/_new_url_directory.test.mjs/0_error/0_error.md
index 6fd82d8a72..7092867f26 100644
--- a/tests/build/new_url_directory/_new_url_directory.test.mjs/0_error/0_error.md
+++ b/tests/build/new_url_directory/_new_url_directory.test.mjs/0_error/0_error.md
@@ -1,4 +1,4 @@
-# [0_error](../../new_url_directory.test.mjs#L25)
+# [0_error](../../new_url_directory.test.mjs#L27)
 
 ```js
 run({
diff --git a/tests/build/new_url_directory/_new_url_directory.test.mjs/1_copy/1_copy.md b/tests/build/new_url_directory/_new_url_directory.test.mjs/1_copy/1_copy.md
index 128c799883..73162c805d 100644
--- a/tests/build/new_url_directory/_new_url_directory.test.mjs/1_copy/1_copy.md
+++ b/tests/build/new_url_directory/_new_url_directory.test.mjs/1_copy/1_copy.md
@@ -1,4 +1,4 @@
-# [1_copy](../../new_url_directory.test.mjs#L29)
+# [1_copy](../../new_url_directory.test.mjs#L31)
 
 ```js
 run({
diff --git a/tests/build/new_url_directory/new_url_directory.test.mjs b/tests/build/new_url_directory/new_url_directory.test.mjs
index 2bd092f0cc..dba64b95f6 100644
--- a/tests/build/new_url_directory/new_url_directory.test.mjs
+++ b/tests/build/new_url_directory/new_url_directory.test.mjs
@@ -21,13 +21,17 @@ const run = async ({ directoryReferenceEffect }) => {
   return executeHtml(`${buildServer.origin}/main.html`);
 };
 
-await snapshotBuildTests(import.meta.url, ({ test }) => {
-  test("0_error", () =>
-    run({
-      directoryReferenceEffect: "error",
-    }));
-  test("1_copy", () =>
-    run({
-      directoryReferenceEffect: "copy",
-    }));
-});
+await snapshotBuildTests(
+  import.meta.url,
+  ({ test }) => {
+    test("0_error", () =>
+      run({
+        directoryReferenceEffect: "error",
+      }));
+    test("1_copy", () =>
+      run({
+        directoryReferenceEffect: "copy",
+      }));
+  },
+  { executionEffects: { catch: true } },
+);
diff --git a/tests/dev_and_build/css_background_url/_css_background_url_build.test.mjs/0_basic/0_basic.md b/tests/dev_and_build/css_background_url/_css_background_url_build.test.mjs/0_basic/0_basic.md
index 3f8b2a22a8..6fe8091a20 100644
--- a/tests/dev_and_build/css_background_url/_css_background_url_build.test.mjs/0_basic/0_basic.md
+++ b/tests/dev_and_build/css_background_url/_css_background_url_build.test.mjs/0_basic/0_basic.md
@@ -1,13 +1,7 @@
-# [0_basic](../../css_background_url_build.test.mjs#L5)
+# [0_basic](../../css_background_url_build.test.mjs#L15)
 
 ```js
-build({
-  sourceDirectoryUrl: new URL("./client/", import.meta.url),
-  buildDirectoryUrl: new URL("./build/", import.meta.url),
-  entryPoints: { "./main.css": "main.css" },
-  bundling: false,
-  minification: false,
-})
+run()
 ```
 
 # 1/2 write 2 files into "./build/"
@@ -17,7 +11,7 @@ see [./build/](./build/)
 # 2/2 resolve
 
 ```js
-{}
+undefined
 ```
 
 ---
diff --git a/tests/dev_and_build/css_background_url/css_background_url_build.test.mjs b/tests/dev_and_build/css_background_url/css_background_url_build.test.mjs
index eedde2a722..6833150ac4 100644
--- a/tests/dev_and_build/css_background_url/css_background_url_build.test.mjs
+++ b/tests/dev_and_build/css_background_url/css_background_url_build.test.mjs
@@ -1,13 +1,16 @@
 import { build } from "@jsenv/core";
 import { snapshotBuildTests } from "@jsenv/core/tests/snapshot_build_side_effects.js";
 
+const run = async () => {
+  await build({
+    sourceDirectoryUrl: new URL("./client/", import.meta.url),
+    buildDirectoryUrl: new URL("./build/", import.meta.url),
+    entryPoints: { "./main.css": "main.css" },
+    bundling: false,
+    minification: false,
+  });
+};
+
 await snapshotBuildTests(import.meta.url, ({ test }) => {
-  test("0_basic", () =>
-    build({
-      sourceDirectoryUrl: new URL("./client/", import.meta.url),
-      buildDirectoryUrl: new URL("./build/", import.meta.url),
-      entryPoints: { "./main.css": "main.css" },
-      bundling: false,
-      minification: false,
-    }));
+  test("0_basic", () => run());
 });
diff --git a/tests/dev_and_build/errors/css_background_url_not_found/_css_background_url_not_found_build.test.mjs/0_basic/0_basic.md b/tests/dev_and_build/errors/css_background_url_not_found/_css_background_url_not_found_build.test.mjs/0_basic/0_basic.md
index f7708a518c..131be3135f 100644
--- a/tests/dev_and_build/errors/css_background_url_not_found/_css_background_url_not_found_build.test.mjs/0_basic/0_basic.md
+++ b/tests/dev_and_build/errors/css_background_url_not_found/_css_background_url_not_found_build.test.mjs/0_basic/0_basic.md
@@ -1,4 +1,4 @@
-# [0_basic](../../css_background_url_not_found_build.test.mjs#L20)
+# [0_basic](../../css_background_url_not_found_build.test.mjs#L22)
 
 ```js
 run()
diff --git a/tests/dev_and_build/errors/css_background_url_not_found/css_background_url_not_found_build.test.mjs b/tests/dev_and_build/errors/css_background_url_not_found/css_background_url_not_found_build.test.mjs
index 3d143af0b2..6dbfafb5a7 100644
--- a/tests/dev_and_build/errors/css_background_url_not_found/css_background_url_not_found_build.test.mjs
+++ b/tests/dev_and_build/errors/css_background_url_not_found/css_background_url_not_found_build.test.mjs
@@ -16,6 +16,10 @@ const run = async () => {
   return executeHtml(`${buildServer.origin}/main.html`);
 };
 
-await snapshotBuildTests(import.meta.url, ({ test }) => {
-  test("0_basic", () => run());
-});
+await snapshotBuildTests(
+  import.meta.url,
+  ({ test }) => {
+    test("0_basic", () => run());
+  },
+  { executionEffects: { catch: true } },
+);
diff --git a/tests/dev_and_build/errors/img_not_found/_img_not_found_build.test.mjs/0_basic/0_basic.md b/tests/dev_and_build/errors/img_not_found/_img_not_found_build.test.mjs/0_basic/0_basic.md
index 48abc812e8..e4829a0fe0 100644
--- a/tests/dev_and_build/errors/img_not_found/_img_not_found_build.test.mjs/0_basic/0_basic.md
+++ b/tests/dev_and_build/errors/img_not_found/_img_not_found_build.test.mjs/0_basic/0_basic.md
@@ -1,4 +1,4 @@
-# [0_basic](../../img_not_found_build.test.mjs#L20)
+# [0_basic](../../img_not_found_build.test.mjs#L22)
 
 ```js
 run()
diff --git a/tests/dev_and_build/errors/img_not_found/img_not_found_build.test.mjs b/tests/dev_and_build/errors/img_not_found/img_not_found_build.test.mjs
index 3d143af0b2..6dbfafb5a7 100644
--- a/tests/dev_and_build/errors/img_not_found/img_not_found_build.test.mjs
+++ b/tests/dev_and_build/errors/img_not_found/img_not_found_build.test.mjs
@@ -16,6 +16,10 @@ const run = async () => {
   return executeHtml(`${buildServer.origin}/main.html`);
 };
 
-await snapshotBuildTests(import.meta.url, ({ test }) => {
-  test("0_basic", () => run());
-});
+await snapshotBuildTests(
+  import.meta.url,
+  ({ test }) => {
+    test("0_basic", () => run());
+  },
+  { executionEffects: { catch: true } },
+);
diff --git a/tests/dev_and_build/errors/js_import_meta_url_not_found/_js_import_meta_url_not_found_build.test.mjs/0_basic/0_basic.md b/tests/dev_and_build/errors/js_import_meta_url_not_found/_js_import_meta_url_not_found_build.test.mjs/0_basic/0_basic.md
index 3fc2be1a40..b431286139 100644
--- a/tests/dev_and_build/errors/js_import_meta_url_not_found/_js_import_meta_url_not_found_build.test.mjs/0_basic/0_basic.md
+++ b/tests/dev_and_build/errors/js_import_meta_url_not_found/_js_import_meta_url_not_found_build.test.mjs/0_basic/0_basic.md
@@ -1,4 +1,4 @@
-# [0_basic](../../js_import_meta_url_not_found_build.test.mjs#L20)
+# [0_basic](../../js_import_meta_url_not_found_build.test.mjs#L22)
 
 ```js
 run()
diff --git a/tests/dev_and_build/errors/js_import_meta_url_not_found/js_import_meta_url_not_found_build.test.mjs b/tests/dev_and_build/errors/js_import_meta_url_not_found/js_import_meta_url_not_found_build.test.mjs
index 3d143af0b2..ec4a886cab 100644
--- a/tests/dev_and_build/errors/js_import_meta_url_not_found/js_import_meta_url_not_found_build.test.mjs
+++ b/tests/dev_and_build/errors/js_import_meta_url_not_found/js_import_meta_url_not_found_build.test.mjs
@@ -16,6 +16,12 @@ const run = async () => {
   return executeHtml(`${buildServer.origin}/main.html`);
 };
 
-await snapshotBuildTests(import.meta.url, ({ test }) => {
-  test("0_basic", () => run());
-});
+await snapshotBuildTests(
+  import.meta.url,
+  ({ test }) => {
+    test("0_basic", () => run());
+  },
+  {
+    executionEffects: { catch: true },
+  },
+);
diff --git a/tests/dev_and_build/errors/js_import_not_found/_js_import_not_found_build.test.mjs/0_basic/0_basic.md b/tests/dev_and_build/errors/js_import_not_found/_js_import_not_found_build.test.mjs/0_basic/0_basic.md
index 6829e6c47c..4e9720947d 100644
--- a/tests/dev_and_build/errors/js_import_not_found/_js_import_not_found_build.test.mjs/0_basic/0_basic.md
+++ b/tests/dev_and_build/errors/js_import_not_found/_js_import_not_found_build.test.mjs/0_basic/0_basic.md
@@ -1,4 +1,4 @@
-# [0_basic](../../js_import_not_found_build.test.mjs#L20)
+# [0_basic](../../js_import_not_found_build.test.mjs#L22)
 
 ```js
 run()
diff --git a/tests/dev_and_build/errors/js_import_not_found/js_import_not_found_build.test.mjs b/tests/dev_and_build/errors/js_import_not_found/js_import_not_found_build.test.mjs
index 3d143af0b2..ec4a886cab 100644
--- a/tests/dev_and_build/errors/js_import_not_found/js_import_not_found_build.test.mjs
+++ b/tests/dev_and_build/errors/js_import_not_found/js_import_not_found_build.test.mjs
@@ -16,6 +16,12 @@ const run = async () => {
   return executeHtml(`${buildServer.origin}/main.html`);
 };
 
-await snapshotBuildTests(import.meta.url, ({ test }) => {
-  test("0_basic", () => run());
-});
+await snapshotBuildTests(
+  import.meta.url,
+  ({ test }) => {
+    test("0_basic", () => run());
+  },
+  {
+    executionEffects: { catch: true },
+  },
+);