diff --git a/tests/ef_tests/src/case_result.rs b/tests/ef_tests/src/case_result.rs
index 7b7afd1bd..2bf9813c6 100644
--- a/tests/ef_tests/src/case_result.rs
+++ b/tests/ef_tests/src/case_result.rs
@@ -1,6 +1,8 @@
 use super::*;
 use std::fmt::Debug;
 
+pub const MAX_VALUE_STRING_LEN: usize = 500;
+
 #[derive(Debug, PartialEq, Clone)]
 pub struct CaseResult {
     pub case_index: usize,
@@ -32,21 +34,29 @@ where
         (Err(_), None) => Ok(()),
         // Fail: The test failed when it should have produced a result (fail).
         (Err(e), Some(expected)) => Err(Error::NotEqual(format!(
-            "Got {:?} Expected {:?}",
-            e, expected
+            "Got {:?} | Expected {:?}",
+            e,
+            fmt_val(expected)
         ))),
         // Fail: The test produced a result when it should have failed (fail).
-        (Ok(result), None) => Err(Error::DidntFail(format!("Got {:?}", result))),
+        (Ok(result), None) => Err(Error::DidntFail(format!("Got {:?}", fmt_val(result)))),
         // Potential Pass: The test should have produced a result, and it did.
         (Ok(result), Some(expected)) => {
             if result == expected {
                 Ok(())
             } else {
                 Err(Error::NotEqual(format!(
-                    "Got {:?} expected {:?}",
-                    result, expected
+                    "Got {:?} | Expected {:?}",
+                    fmt_val(result),
+                    fmt_val(expected)
                 )))
             }
         }
     }
 }
+
+fn fmt_val<T: Debug>(val: T) -> String {
+    let mut string = format!("{:?}", val);
+    string.truncate(MAX_VALUE_STRING_LEN);
+    string
+}
diff --git a/tests/ef_tests/src/cases/operations_deposit.rs b/tests/ef_tests/src/cases/operations_deposit.rs
index 81fd2b039..fb2364961 100644
--- a/tests/ef_tests/src/cases/operations_deposit.rs
+++ b/tests/ef_tests/src/cases/operations_deposit.rs
@@ -1,5 +1,7 @@
 use super::*;
+use crate::case_result::compare_result;
 use serde_derive::Deserialize;
+use state_processing::per_block_processing::process_deposits;
 use types::{BeaconState, Deposit, EthSpec};
 
 #[derive(Debug, Clone, Deserialize)]
@@ -18,19 +20,13 @@ impl<E: EthSpec> YamlDecode for OperationsDeposit<E> {
     }
 }
 
-/*
-impl<T: EthSpec> EfTest for Cases<OperationsDeposit<T>> {
-    fn test_results<E: EthSpec>(&self) -> Vec<CaseResult> {
-        self.test_cases
-            .iter()
-            .enumerate()
-            .map(|(i, tc)| {
-                // TODO: run test
-                let result = Ok(());
+impl<E: EthSpec> Case for OperationsDeposit<E> {
+    fn result(&self) -> Result<(), Error> {
+        let mut state = self.pre.clone();
+        let deposit = self.deposit.clone();
 
-                CaseResult::new(i, tc, result)
-            })
-            .collect()
+        let result = process_deposits(&mut state, &[deposit], &E::spec()).and_then(|_| Ok(state));
+
+        compare_result(&result, &self.post)
     }
 }
-*/
diff --git a/tests/ef_tests/src/doc.rs b/tests/ef_tests/src/doc.rs
index e818c4596..c475c67c6 100644
--- a/tests/ef_tests/src/doc.rs
+++ b/tests/ef_tests/src/doc.rs
@@ -51,14 +51,12 @@ impl Doc {
             ("bls", "msg_hash_uncompressed", "mainnet") => vec![],
             ("bls", "priv_to_pub", "mainnet") => run_test::<BlsPrivToPub>(self),
             ("bls", "sign_msg", "mainnet") => run_test::<BlsSign>(self),
-            /*
             ("operations", "deposit", "mainnet") => {
                 run_test::<OperationsDeposit<MainnetEthSpec>>(self)
             }
             ("operations", "deposit", "minimal") => {
                 run_test::<OperationsDeposit<MinimalEthSpec>>(self)
             }
-            */
             (runner, handler, config) => panic!(
                 "No implementation for runner: \"{}\", handler: \"{}\", config: \"{}\"",
                 runner, handler, config