diff --git a/Cargo.lock b/Cargo.lock
index 15beb69..137ed62 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -12,6 +12,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 name = "ferris-boi"
 version = "0.1.0"
 dependencies = [
+ "include_dir",
  "serde",
  "serde_derive",
  "serde_json",
@@ -33,6 +34,25 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2540771e65fc8cb83cd6e8a237f70c319bd5c29f78ed1084ba5d50eeac86f7f9"
 
+[[package]]
+name = "include_dir"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18762faeff7122e89e0857b02f7ce6fcc0d101d5e9ad2ad7846cc01d61b7f19e"
+dependencies = [
+ "include_dir_macros",
+]
+
+[[package]]
+name = "include_dir_macros"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b139284b5cf57ecfa712bcc66950bb635b31aff41c188e8a4cfc758eca374a3f"
+dependencies = [
+ "proc-macro2 1.0.67",
+ "quote 1.0.33",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.6"
diff --git a/Cargo.toml b/Cargo.toml
index 933c695..dc05dc9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,3 +15,7 @@ serde = "1.0"
 serde_json = "1.0"
 serde_derive = "1.0"
 test-generator = "0.3.0"
+include_dir = "0.7.3"
+
+[profile.release]
+debug = true
diff --git a/tests/cpu/jsmoo/tests.rs b/tests/cpu/jsmoo/tests.rs
index fc8be9f..6648062 100644
--- a/tests/cpu/jsmoo/tests.rs
+++ b/tests/cpu/jsmoo/tests.rs
@@ -1,14 +1,20 @@
-use std::fs::File;
+use std::path::Path;
 
 use ferris_boi::cpu::Processor;
+use include_dir::{include_dir, Dir};
 use test_generator::test_resources;
 
 use super::TestCase;
 
+const TESTDATA_DIR: Dir<'_> = include_dir!("$CARGO_MANIFEST_DIR/tests/cpu/jsmoo/testdata");
+
 #[test_resources("tests/cpu/jsmoo/testdata/*.json")]
 fn test_jsmoo_test(filename: &str) {
-    let testdata_file = File::open(filename).expect("failed to open test data file");
-    let test_cases = serde_json::from_reader::<_, Vec<TestCase>>(testdata_file)
+    let basename = Path::new(filename).file_name().unwrap();
+    let testdata_file = TESTDATA_DIR
+        .get_file(basename)
+        .expect("could not find data file");
+    let test_cases = serde_json::from_slice::<Vec<TestCase>>(testdata_file.contents())
         .expect("failed to parse test data file");
 
     for test_case in test_cases {