Add basic code for new testing format

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "tests/ef_tests/eth2.0-spec-tests"]
+	path = tests/ef_tests/eth2.0-spec-tests
+	url = https://github.com/ethereum/eth2.0-spec-tests

Cargo.toml

@@ -29,6 +29,7 @@ members = [
     "beacon_node/rpc",
 	"beacon_node/version",
 	"beacon_node/beacon_chain",
+	"tests/ef_tests",
 	"protos",
 	"validator_client",
 	"account_manager",

tests/ef_tests/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "ef_tests"
+version = "0.1.0"
+authors = ["Paul Hauner <paul@paulhauner.com>"]
+edition = "2018"
+
+[dependencies]
+serde = "1.0"
+serde_derive = "1.0"
+serde_yaml = "0.8"

tests/ef_tests/eth2.0-spec-tests

@@ -0,0 +1 @@
+Subproject commit 161a36ee6232d8d251d798c8262638ed0c34c9c6

tests/ef_tests/src/lib.rs

@@ -0,0 +1,30 @@
+use serde_derive::Deserialize;
+
+#[derive(Debug, Deserialize)]
+pub struct TestDoc<T> {
+    pub title: String,
+    pub summary: String,
+    pub forks_timeline: String,
+    pub forks: Vec<String>,
+    pub config: String,
+    pub runner: String,
+    pub handler: String,
+    pub test_cases: Vec<T>,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct SszGenericCase {
+    #[serde(alias = "type")]
+    pub type_name: String,
+    pub valid: bool,
+    pub value: String,
+    pub ssz: Option<String>,
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}

tests/ef_tests/tests/tests.rs

@@ -0,0 +1,27 @@
+use ef_tests::*;
+use serde::de::DeserializeOwned;
+use std::{fs::File, io::prelude::*, path::PathBuf};
+
+fn load_test_case<T: DeserializeOwned>(test_name: &str) -> TestDoc<T> {
+    let mut file = {
+        let mut file_path_buf = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+        file_path_buf.push(format!("eth2.0-spec-tests/tests/{}", test_name));
+
+        File::open(file_path_buf).unwrap()
+    };
+
+    let mut yaml_str = String::new();
+    file.read_to_string(&mut yaml_str).unwrap();
+    yaml_str = yaml_str.to_lowercase();
+
+    serde_yaml::from_str(&yaml_str.as_str()).unwrap()
+}
+
+#[test]
+fn ssz() {
+    let doc: TestDoc<SszGenericCase> = load_test_case("ssz_generic/uint/uint_bounds.yaml");
+
+    dbg!(doc);
+
+    assert!(false);
+}