diff --git a/tests/ef_tests/src/cases.rs b/tests/ef_tests/src/cases.rs
index df1a9428ba..8bff0cdf85 100644
--- a/tests/ef_tests/src/cases.rs
+++ b/tests/ef_tests/src/cases.rs
@@ -9,6 +9,7 @@ mod bls_priv_to_pub;
 mod bls_sign_msg;
 mod epoch_processing_crosslinks;
 mod epoch_processing_registry_updates;
+mod operations_attestation;
 mod operations_attester_slashing;
 mod operations_deposit;
 mod operations_exit;
@@ -26,6 +27,7 @@ pub use bls_priv_to_pub::*;
 pub use bls_sign_msg::*;
 pub use epoch_processing_crosslinks::*;
 pub use epoch_processing_registry_updates::*;
+pub use operations_attestation::*;
 pub use operations_attester_slashing::*;
 pub use operations_deposit::*;
 pub use operations_exit::*;
diff --git a/tests/ef_tests/src/cases/operations_attestation.rs b/tests/ef_tests/src/cases/operations_attestation.rs
new file mode 100644
index 0000000000..3289545146
--- /dev/null
+++ b/tests/ef_tests/src/cases/operations_attestation.rs
@@ -0,0 +1,42 @@
+use super::*;
+use crate::case_result::compare_beacon_state_results_without_caches;
+use serde_derive::Deserialize;
+use state_processing::per_block_processing::process_attestations;
+use types::{Attestation, BeaconState, EthSpec};
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct OperationsAttestation<E: EthSpec> {
+    pub description: String,
+    #[serde(bound = "E: EthSpec")]
+    pub pre: BeaconState<E>,
+    pub attestation: Attestation,
+    #[serde(bound = "E: EthSpec")]
+    pub post: Option<BeaconState<E>>,
+}
+
+impl<E: EthSpec> YamlDecode for OperationsAttestation<E> {
+    fn yaml_decode(yaml: &String) -> Result<Self, Error> {
+        Ok(serde_yaml::from_str(&yaml.as_str()).unwrap())
+    }
+}
+
+impl<E: EthSpec> Case for OperationsAttestation<E> {
+    fn description(&self) -> String {
+        self.description.clone()
+    }
+
+    fn result(&self, _case_index: usize) -> Result<(), Error> {
+        let mut state = self.pre.clone();
+        let attestation = self.attestation.clone();
+        let mut expected = self.post.clone();
+
+        // Processing requires the epoch cache.
+        state.build_all_caches(&E::spec()).unwrap();
+
+        let result = process_attestations(&mut state, &[attestation], &E::spec());
+
+        let mut result = result.and_then(|_| Ok(state));
+
+        compare_beacon_state_results_without_caches(&mut result, &mut expected)
+    }
+}
diff --git a/tests/ef_tests/src/doc.rs b/tests/ef_tests/src/doc.rs
index f69d1f998e..38f5e3cb35 100644
--- a/tests/ef_tests/src/doc.rs
+++ b/tests/ef_tests/src/doc.rs
@@ -83,6 +83,12 @@ impl Doc {
             ("operations", "attester_slashing", "minimal") => {
                 run_test::<OperationsAttesterSlashing<MinimalEthSpec>>(self)
             }
+            ("operations", "attestation", "mainnet") => {
+                run_test::<OperationsAttestation<MainnetEthSpec>>(self)
+            }
+            ("operations", "attestation", "minimal") => {
+                run_test::<OperationsAttestation<MinimalEthSpec>>(self)
+            }
             ("epoch_processing", "crosslinks", "minimal") => {
                 run_test::<EpochProcessingCrosslinks<MinimalEthSpec>>(self)
             }
diff --git a/tests/ef_tests/src/eth_specs.rs b/tests/ef_tests/src/eth_specs.rs
index cdf8b94e8c..1e3f57d419 100644
--- a/tests/ef_tests/src/eth_specs.rs
+++ b/tests/ef_tests/src/eth_specs.rs
@@ -23,6 +23,7 @@ impl EthSpec for MinimalEthSpec {
         // TODO: this spec is likely incorrect!
         let mut spec = FewValidatorsEthSpec::spec();
         spec.shuffle_round_count = 10;
+        spec.min_attestation_inclusion_delay = 2;
         spec
     }
 }
diff --git a/tests/ef_tests/tests/tests.rs b/tests/ef_tests/tests/tests.rs
index ddf13388f0..4a1618541d 100644
--- a/tests/ef_tests/tests/tests.rs
+++ b/tests/ef_tests/tests/tests.rs
@@ -115,6 +115,15 @@ fn operations_attester_slashing() {
         });
 }
 
+#[test]
+fn operations_attestation() {
+    yaml_files_in_test_dir(&Path::new("operations").join("attestation"))
+        .into_par_iter()
+        .for_each(|file| {
+            Doc::assert_tests_pass(file);
+        });
+}
+
 #[test]
 #[cfg(not(feature = "fake_crypto"))]
 fn bls() {