diff --git a/Cargo.lock b/Cargo.lock
index af112883e..ff4c8373d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1779,7 +1779,6 @@ dependencies = [
  "gosub_rendering",
  "gosub_shared",
  "gosub_taffy",
- "gosub_testing",
  "gosub_useragent",
  "gosub_v8",
  "gosub_vello",
@@ -1809,10 +1808,15 @@ dependencies = [
  "derive_more",
  "gosub_css3",
  "gosub_shared",
- "gosub_testing",
  "lazy_static",
  "log",
+ "nom",
+ "nom_locate",
  "phf",
+ "regex",
+ "serde",
+ "serde_derive",
+ "serde_json",
  "test-case",
  "thiserror 2.0.7",
  "ureq",
@@ -1927,21 +1931,6 @@ dependencies = [
  "taffy",
 ]
 
-[[package]]
-name = "gosub_testing"
-version = "0.1.0"
-dependencies = [
- "gosub_html5",
- "gosub_shared",
- "lazy_static",
- "nom",
- "nom_locate",
- "regex",
- "serde",
- "serde_derive",
- "serde_json",
-]
-
 [[package]]
 name = "gosub_typeface"
 version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
index b7c3fed29..95123c16a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,7 +33,6 @@ gosub_config = { path = "./crates/gosub_config", features = [] }
 gosub_html5 = { path = "./crates/gosub_html5", features = [] }
 gosub_css3 = { path = "./crates/gosub_css3", features = [] }
 gosub_jsapi = { path = "./crates/gosub_jsapi", features = [] }
-gosub_testing = { path = "./crates/gosub_testing", features = [] }
 gosub_rendering = { path = "crates/gosub_render_utils", features = [] }
 gosub_renderer = { path = "./crates/gosub_renderer", features = [] }
 gosub_vello = { path = "./crates/gosub_vello", features = [] }
diff --git a/crates/gosub_html5/Cargo.toml b/crates/gosub_html5/Cargo.toml
index 9564a7769..cd8f7a8a6 100644
--- a/crates/gosub_html5/Cargo.toml
+++ b/crates/gosub_html5/Cargo.toml
@@ -14,15 +14,21 @@ lazy_static = "1.5"
 thiserror = "2.0.7"
 url = { version = "2.5.4", features = [] }
 log = { version = "0.4.22", features = [] }
+nom = "7.1.3"
+nom_locate = "4.2.0"
+regex = "1"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = { version = "1.0", features = ["preserve_order"] }
+serde_derive = "1.0"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 ureq = "2.12.1"
 
 [dev-dependencies]
-gosub_testing = { path = "../gosub_testing" }
 test-case = "3.3.1"
 criterion = { version = "0.5.1", features = ["html_reports"] }
 
+
 [features]
 debug_parser = []
 debug_parser_verbose = []
diff --git a/crates/gosub_html5/benches/tokenizer.rs b/crates/gosub_html5/benches/tokenizer.rs
index e20824a6a..908f14501 100644
--- a/crates/gosub_html5/benches/tokenizer.rs
+++ b/crates/gosub_html5/benches/tokenizer.rs
@@ -1,5 +1,5 @@
 use criterion::{criterion_group, criterion_main, Criterion};
-use gosub_testing::testing::tokenizer::{self, FixtureFile};
+use gosub_html5::testing::tokenizer::{self, FixtureFile};
 
 fn criterion_benchmark(c: &mut Criterion) {
     // Criterion can report inconsistent results from run to run in some cases.  We attempt to
diff --git a/crates/gosub_html5/benches/tree_construction.rs b/crates/gosub_html5/benches/tree_construction.rs
index e8a6aa13d..61bda103d 100644
--- a/crates/gosub_html5/benches/tree_construction.rs
+++ b/crates/gosub_html5/benches/tree_construction.rs
@@ -5,8 +5,8 @@ use gosub_html5::document::document_impl::DocumentImpl;
 use gosub_html5::document::fragment::DocumentFragmentImpl;
 use gosub_html5::parser::Html5Parser;
 use gosub_shared::traits::config::{HasCssSystem, HasDocument, HasHtmlParser};
-use gosub_testing::testing::tree_construction;
-use gosub_testing::testing::tree_construction::Harness;
+use gosub_html5::testing::tree_construction;
+use gosub_html5::testing::tree_construction::Harness;
 
 #[derive(Clone, Debug, PartialEq)]
 struct Config;
diff --git a/crates/gosub_html5/src/lib.rs b/crates/gosub_html5/src/lib.rs
index 8ca8f39b2..ed8186a35 100644
--- a/crates/gosub_html5/src/lib.rs
+++ b/crates/gosub_html5/src/lib.rs
@@ -17,6 +17,7 @@ pub mod parser;
 pub mod tokenizer;
 #[allow(dead_code)]
 pub mod writer;
+pub mod testing;
 
 /// Parses the given HTML string and returns a handle to the resulting DOM tree.
 pub fn html_compile<C: HasDocument>(html: &str) -> DocumentHandle<C> {
diff --git a/crates/gosub_html5/src/parser/tree_builder.rs b/crates/gosub_html5/src/parser/tree_builder.rs
index 4630969e3..855e47512 100644
--- a/crates/gosub_html5/src/parser/tree_builder.rs
+++ b/crates/gosub_html5/src/parser/tree_builder.rs
@@ -34,10 +34,10 @@ mod tests {
     use crate::document::document_impl::DocumentImpl;
     use crate::document::fragment::DocumentFragmentImpl;
     use crate::parser::Html5Parser;
+    use crate::testing::tree_construction::fixture::{fixture_root_path, read_fixture_from_path};
+    use crate::testing::tree_construction::Harness;
     use gosub_css3::system::Css3System;
     use gosub_shared::traits::config::{HasCssSystem, HasDocument, HasHtmlParser};
-    use gosub_testing::testing::tree_construction::fixture::{fixture_root_path, read_fixture_from_path};
-    use gosub_testing::testing::tree_construction::Harness;
     use test_case::test_case;
 
     #[derive(Clone, Debug, PartialEq)]
@@ -119,6 +119,7 @@ mod tests {
     #[test_case("webkit01.dat")]
     #[test_case("webkit02.dat")]
     fn tree_construction(filename: &str) {
+        dbg!(fixture_root_path().join(filename));
         let fixture_file = read_fixture_from_path(fixture_root_path().join(filename)).expect("fixture");
         let mut harness = Harness::new();
 
diff --git a/crates/gosub_testing/src/testing.rs b/crates/gosub_html5/src/testing.rs
similarity index 82%
rename from crates/gosub_testing/src/testing.rs
rename to crates/gosub_html5/src/testing.rs
index 72668cab2..0041481c7 100644
--- a/crates/gosub_testing/src/testing.rs
+++ b/crates/gosub_html5/src/testing.rs
@@ -2,5 +2,5 @@
 pub mod tokenizer;
 pub mod tree_construction;
 
-pub const FIXTURE_ROOT: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/../gosub_html5/tests/data/html5lib-tests",);
+pub const FIXTURE_ROOT: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/./tests/data/html5lib-tests",);
 pub const TREE_CONSTRUCTION_PATH: &str = "tree-construction";
diff --git a/crates/gosub_testing/src/testing/tokenizer.rs b/crates/gosub_html5/src/testing/tokenizer.rs
similarity index 99%
rename from crates/gosub_testing/src/testing/tokenizer.rs
rename to crates/gosub_html5/src/testing/tokenizer.rs
index 6506d3ee0..e61d0eab4 100644
--- a/crates/gosub_testing/src/testing/tokenizer.rs
+++ b/crates/gosub_html5/src/testing/tokenizer.rs
@@ -1,7 +1,7 @@
 use super::FIXTURE_ROOT;
-use gosub_html5::parser::errors::ErrorLogger;
-use gosub_html5::tokenizer::ParserData;
-use gosub_html5::tokenizer::{
+use crate::parser::errors::ErrorLogger;
+use crate::tokenizer::ParserData;
+use crate::tokenizer::{
     state::State as TokenState,
     token::Token,
     {Options, Tokenizer},
diff --git a/crates/gosub_testing/src/testing/tree_construction.rs b/crates/gosub_html5/src/testing/tree_construction.rs
similarity index 98%
rename from crates/gosub_testing/src/testing/tree_construction.rs
rename to crates/gosub_html5/src/testing/tree_construction.rs
index 2888b2edc..71bb733a4 100644
--- a/crates/gosub_testing/src/testing/tree_construction.rs
+++ b/crates/gosub_html5/src/testing/tree_construction.rs
@@ -1,10 +1,10 @@
 pub mod fixture;
 mod generator;
-pub(crate) mod parser;
+pub mod parser;
 pub mod result;
 
 use generator::TreeOutputGenerator;
-use gosub_html5::node::{HTML_NAMESPACE, MATHML_NAMESPACE, SVG_NAMESPACE};
+use crate::node::{HTML_NAMESPACE, MATHML_NAMESPACE, SVG_NAMESPACE};
 use gosub_shared::byte_stream::{ByteStream, Config, Encoding, Location};
 use gosub_shared::document::DocumentHandle;
 use gosub_shared::node::NodeId;
diff --git a/crates/gosub_testing/src/testing/tree_construction/fixture.rs b/crates/gosub_html5/src/testing/tree_construction/fixture.rs
similarity index 100%
rename from crates/gosub_testing/src/testing/tree_construction/fixture.rs
rename to crates/gosub_html5/src/testing/tree_construction/fixture.rs
diff --git a/crates/gosub_testing/src/testing/tree_construction/generator.rs b/crates/gosub_html5/src/testing/tree_construction/generator.rs
similarity index 97%
rename from crates/gosub_testing/src/testing/tree_construction/generator.rs
rename to crates/gosub_html5/src/testing/tree_construction/generator.rs
index 83c96c103..948f3df59 100644
--- a/crates/gosub_testing/src/testing/tree_construction/generator.rs
+++ b/crates/gosub_html5/src/testing/tree_construction/generator.rs
@@ -1,5 +1,5 @@
-use gosub_html5::node::HTML_NAMESPACE;
-use gosub_html5::node::{MATHML_NAMESPACE, SVG_NAMESPACE, XLINK_NAMESPACE, XMLNS_NAMESPACE};
+use crate::node::HTML_NAMESPACE;
+use crate::node::{MATHML_NAMESPACE, SVG_NAMESPACE, XLINK_NAMESPACE, XMLNS_NAMESPACE};
 use gosub_shared::document::DocumentHandle;
 use gosub_shared::traits::config::HasDocument;
 use gosub_shared::traits::document::Document;
diff --git a/crates/gosub_testing/src/testing/tree_construction/parser.rs b/crates/gosub_html5/src/testing/tree_construction/parser.rs
similarity index 100%
rename from crates/gosub_testing/src/testing/tree_construction/parser.rs
rename to crates/gosub_html5/src/testing/tree_construction/parser.rs
diff --git a/crates/gosub_testing/src/testing/tree_construction/result.rs b/crates/gosub_html5/src/testing/tree_construction/result.rs
similarity index 100%
rename from crates/gosub_testing/src/testing/tree_construction/result.rs
rename to crates/gosub_html5/src/testing/tree_construction/result.rs
diff --git a/crates/gosub_html5/src/tokenizer/test_cases.rs b/crates/gosub_html5/src/tokenizer/test_cases.rs
index a0aff123a..6e5088bb9 100644
--- a/crates/gosub_html5/src/tokenizer/test_cases.rs
+++ b/crates/gosub_html5/src/tokenizer/test_cases.rs
@@ -1,4 +1,4 @@
-use gosub_testing::testing::tokenizer::{self, FixtureFile};
+use crate::testing::tokenizer::{self, FixtureFile};
 use lazy_static::lazy_static;
 use std::collections::HashSet;
 use test_case::test_case;
diff --git a/crates/gosub_testing/Cargo.toml b/crates/gosub_testing/Cargo.toml
deleted file mode 100644
index 644411f14..000000000
--- a/crates/gosub_testing/Cargo.toml
+++ /dev/null
@@ -1,17 +0,0 @@
-[package]
-name = "gosub_testing"
-version = "0.1.0"
-edition = "2021"
-authors = ["Gosub Community <info@gosub.io>"]
-license = "MIT"
-
-[dependencies]
-gosub_shared = { path = "../gosub_shared" }
-gosub_html5 = { path = "../gosub_html5" }
-serde = { version = "1.0", features = ["derive"] }
-serde_json = { version = "1.0", features = ["preserve_order"] }
-serde_derive = "1.0"
-lazy_static = "1.5"
-nom = "7.1.3"
-nom_locate = "4.2.0"
-regex = "1"
\ No newline at end of file
diff --git a/crates/gosub_testing/src/lib.rs b/crates/gosub_testing/src/lib.rs
deleted file mode 100644
index 57485cbae..000000000
--- a/crates/gosub_testing/src/lib.rs
+++ /dev/null
@@ -1,6 +0,0 @@
-//! Testing functionality
-//!
-//! This crate supplies testing functionality to test all the gosub crates.
-//!
-
-pub mod testing;
diff --git a/docs/crates.md b/docs/crates.md
index efd7c7a4a..91cc4e0c9 100644
--- a/docs/crates.md
+++ b/docs/crates.md
@@ -12,7 +12,6 @@ The engine is split up in a few different crates. This is done to keep the codeb
 * gosub_shared
 * gosub_svg
 * gosub_taffy
-* gosub_testing
 * gosub_typeface
 * gosub_useragent
 * gosub_v8
@@ -53,9 +52,6 @@ Implementation of the SVG Document for `usvg` and optionally the `resvg` crates,
 ## gosub_taffy
 Implementation of layout traits for the `taffy` layouting system.
 
-## gosub_testing
-A dedicated crate for testing some of the engine. This will allow to easily test the different parts of the engine, most notably the html5 tokenizer and parser.
-
 ## gosub_typeface
 Currently doesn't do much, but it is used to store fallback fonts and the `Font` trait
 
diff --git a/src/bin/html5-parser-test.rs b/src/bin/html5-parser-test.rs
index 8599b212a..debadffde 100755
--- a/src/bin/html5-parser-test.rs
+++ b/src/bin/html5-parser-test.rs
@@ -5,8 +5,8 @@ use gosub_html5::document::fragment::DocumentFragmentImpl;
 use gosub_html5::parser::Html5Parser;
 use gosub_shared::traits::config::{HasCssSystem, HasDocument, HasHtmlParser};
 use gosub_shared::types::Result;
-use gosub_testing::testing::tree_construction::fixture::{fixture_root_path, read_fixture_from_path};
-use gosub_testing::testing::tree_construction::Harness;
+use gosub_html5::testing::tree_construction::fixture::{fixture_root_path, read_fixture_from_path};
+use gosub_html5::testing::tree_construction::Harness;
 use std::io::Write;
 use std::path::{Path, PathBuf};
 use walkdir::WalkDir;
diff --git a/src/bin/parser-test.rs b/src/bin/parser-test.rs
index 8991f0402..c75a0136b 100755
--- a/src/bin/parser-test.rs
+++ b/src/bin/parser-test.rs
@@ -4,10 +4,10 @@ use gosub_html5::document::document_impl::DocumentImpl;
 use gosub_html5::document::fragment::DocumentFragmentImpl;
 use gosub_html5::parser::Html5Parser;
 use gosub_shared::traits::config::{HasCssSystem, HasDocument, HasHtmlParser};
-use gosub_testing::testing::tree_construction::fixture::read_fixtures;
-use gosub_testing::testing::tree_construction::result::ResultStatus;
-use gosub_testing::testing::tree_construction::Harness;
-use gosub_testing::testing::tree_construction::Test;
+use gosub_html5::testing::tree_construction::fixture::read_fixtures;
+use gosub_html5::testing::tree_construction::result::ResultStatus;
+use gosub_html5::testing::tree_construction::Harness;
+use gosub_html5::testing::tree_construction::Test;
 
 /// Holds the results from all tests that are executed
 #[derive(Default)]