diff --git a/tests/ef_tests/src/lib.rs b/tests/ef_tests/src/lib.rs
index ecfcae3cc..c028c6c12 100644
--- a/tests/ef_tests/src/lib.rs
+++ b/tests/ef_tests/src/lib.rs
@@ -3,7 +3,6 @@ use ethereum_types::{U128, U256};
 use serde_derive::Deserialize;
 use ssz::Decode;
 use std::fmt::Debug;
-use test_decode::TestDecode;
 
 pub use crate::error::*;
 pub use crate::eth_specs::*;
@@ -11,13 +10,12 @@ pub use crate::test_case_result::*;
 pub use crate::test_doc::*;
 pub use crate::test_doc_cases::*;
 pub use crate::test_doc_header::*;
-pub use crate::yaml_utils::*;
+pub use yaml_decode::YamlDecode;
 
 mod error;
 mod eth_specs;
 mod test_case_result;
-mod test_decode;
 mod test_doc;
 mod test_doc_cases;
 mod test_doc_header;
-mod yaml_utils;
+mod yaml_decode;
diff --git a/tests/ef_tests/src/test_doc.rs b/tests/ef_tests/src/test_doc.rs
index 316404cfa..99427779e 100644
--- a/tests/ef_tests/src/test_doc.rs
+++ b/tests/ef_tests/src/test_doc.rs
@@ -1,4 +1,5 @@
 use super::*;
+use crate::yaml_decode::*;
 use std::{fs::File, io::prelude::*, path::PathBuf};
 use types::{EthSpec, FoundationEthSpec};
 
@@ -53,12 +54,12 @@ impl TestDoc {
 
 pub fn run_test<T, E: EthSpec>(test_doc_yaml: &String) -> Vec<TestCaseResult>
 where
-    TestDocCases<T>: Test + serde::de::DeserializeOwned + TestDecode,
+    TestDocCases<T>: Test + serde::de::DeserializeOwned + YamlDecode,
 {
     let test_cases_yaml = extract_yaml_by_key(test_doc_yaml, "test_cases");
 
     let test_cases: TestDocCases<T> =
-        TestDocCases::test_decode(&test_cases_yaml.to_string()).unwrap();
+        TestDocCases::yaml_decode(&test_cases_yaml.to_string()).unwrap();
 
     test_cases.test::<E>()
 }
diff --git a/tests/ef_tests/src/test_doc_cases.rs b/tests/ef_tests/src/test_doc_cases.rs
index 45c24146c..199222cf4 100644
--- a/tests/ef_tests/src/test_doc_cases.rs
+++ b/tests/ef_tests/src/test_doc_cases.rs
@@ -1,4 +1,5 @@
 use super::*;
+use crate::yaml_decode::*;
 use yaml_rust::YamlLoader;
 
 mod ssz_generic;
@@ -12,9 +13,9 @@ pub struct TestDocCases<T> {
     pub test_cases: Vec<T>,
 }
 
-impl<T: TestDecode> TestDecode for TestDocCases<T> {
+impl<T: YamlDecode> YamlDecode for TestDocCases<T> {
     /// Decodes a YAML list of test cases
-    fn test_decode(yaml: &String) -> Result<Self, Error> {
+    fn yaml_decode(yaml: &String) -> Result<Self, Error> {
         let doc = &YamlLoader::load_from_str(yaml).unwrap()[0];
 
         let mut test_cases: Vec<T> = vec![];
@@ -24,7 +25,7 @@ impl<T: TestDecode> TestDecode for TestDocCases<T> {
             if doc[i].is_badvalue() {
                 break;
             } else {
-                test_cases.push(T::test_decode(&yaml_to_string(&doc[i])).unwrap())
+                test_cases.push(T::yaml_decode(&yaml_to_string(&doc[i])).unwrap())
             }
 
             i += 1;
diff --git a/tests/ef_tests/src/test_doc_cases/ssz_generic.rs b/tests/ef_tests/src/test_doc_cases/ssz_generic.rs
index a0ed7da22..9585332ac 100644
--- a/tests/ef_tests/src/test_doc_cases/ssz_generic.rs
+++ b/tests/ef_tests/src/test_doc_cases/ssz_generic.rs
@@ -10,8 +10,8 @@ pub struct SszGeneric {
     pub ssz: Option<String>,
 }
 
-impl TestDecode for SszGeneric {
-    fn test_decode(yaml: &String) -> Result<Self, Error> {
+impl YamlDecode for SszGeneric {
+    fn yaml_decode(yaml: &String) -> Result<Self, Error> {
         Ok(serde_yaml::from_str(&yaml.as_str()).unwrap())
     }
 }
@@ -55,7 +55,7 @@ fn ssz_generic_test<T>(
     value: &Option<String>,
 ) -> Result<(), Error>
 where
-    T: Decode + TestDecode + Debug + PartialEq<T>,
+    T: Decode + YamlDecode + Debug + PartialEq<T>,
 {
     let ssz = hex::decode(&ssz[2..]).map_err(|e| Error::FailedToParseTest(format!("{:?}", e)))?;
 
@@ -65,7 +65,7 @@ where
     }
 
     let expected = if let Some(string) = value {
-        Some(T::test_decode(string)?)
+        Some(T::yaml_decode(string)?)
     } else {
         None
     };
diff --git a/tests/ef_tests/src/test_doc_cases/ssz_static.rs b/tests/ef_tests/src/test_doc_cases/ssz_static.rs
index 789b5f17f..8b07ac645 100644
--- a/tests/ef_tests/src/test_doc_cases/ssz_static.rs
+++ b/tests/ef_tests/src/test_doc_cases/ssz_static.rs
@@ -21,8 +21,8 @@ pub struct Value<T> {
     value: T,
 }
 
-impl TestDecode for SszStatic {
-    fn test_decode(yaml: &String) -> Result<Self, Error> {
+impl YamlDecode for SszStatic {
+    fn yaml_decode(yaml: &String) -> Result<Self, Error> {
         let mut ssz_static: SszStatic = serde_yaml::from_str(&yaml.as_str()).unwrap();
 
         ssz_static.raw_yaml = yaml.clone();
diff --git a/tests/ef_tests/src/test_decode.rs b/tests/ef_tests/src/yaml_decode.rs
similarity index 74%
rename from tests/ef_tests/src/test_decode.rs
rename to tests/ef_tests/src/yaml_decode.rs
index 4ba25c1a8..7c2bd84ec 100644
--- a/tests/ef_tests/src/test_decode.rs
+++ b/tests/ef_tests/src/yaml_decode.rs
@@ -1,16 +1,20 @@
 use super::*;
 use types::Fork;
 
-pub trait TestDecode: Sized {
+mod utils;
+
+pub use utils::*;
+
+pub trait YamlDecode: Sized {
     /// Decode an object from the test specification YAML.
-    fn test_decode(string: &String) -> Result<Self, Error>;
+    fn yaml_decode(string: &String) -> Result<Self, Error>;
 }
 
 /// Basic types can general be decoded with the `parse` fn if they implement `str::FromStr`.
 macro_rules! impl_via_parse {
     ($ty: ty) => {
-        impl TestDecode for $ty {
-            fn test_decode(string: &String) -> Result<Self, Error> {
+        impl YamlDecode for $ty {
+            fn yaml_decode(string: &String) -> Result<Self, Error> {
                 string
                     .parse::<Self>()
                     .map_err(|e| Error::FailedToParseTest(format!("{:?}", e)))
@@ -28,8 +32,8 @@ impl_via_parse!(u64);
 /// hex, so we use `from_dec_str` instead.
 macro_rules! impl_via_from_dec_str {
     ($ty: ty) => {
-        impl TestDecode for $ty {
-            fn test_decode(string: &String) -> Result<Self, Error> {
+        impl YamlDecode for $ty {
+            fn yaml_decode(string: &String) -> Result<Self, Error> {
                 Self::from_dec_str(string).map_err(|e| Error::FailedToParseTest(format!("{:?}", e)))
             }
         }
@@ -42,8 +46,8 @@ impl_via_from_dec_str!(U256);
 /// Types that already implement `serde::Deserialize` can be decoded using `serde_yaml`.
 macro_rules! impl_via_serde_yaml {
     ($ty: ty) => {
-        impl TestDecode for $ty {
-            fn test_decode(string: &String) -> Result<Self, Error> {
+        impl YamlDecode for $ty {
+            fn yaml_decode(string: &String) -> Result<Self, Error> {
                 serde_yaml::from_str(string)
                     .map_err(|e| Error::FailedToParseTest(format!("{:?}", e)))
             }
diff --git a/tests/ef_tests/src/yaml_utils.rs b/tests/ef_tests/src/yaml_decode/utils.rs
similarity index 100%
rename from tests/ef_tests/src/yaml_utils.rs
rename to tests/ef_tests/src/yaml_decode/utils.rs
diff --git a/tests/ef_tests/tests/tests.rs b/tests/ef_tests/tests/tests.rs
index d0452ab94..70966dc90 100644
--- a/tests/ef_tests/tests/tests.rs
+++ b/tests/ef_tests/tests/tests.rs
@@ -47,7 +47,6 @@ mod ssz_static {
     }
 
     #[test]
-    #[ignore]
     fn minimal_nil() {
         TestDoc::assert_tests_pass(ssz_generic_file("core/ssz_minimal_nil.yaml"));
     }