From a59c695ecb8a0db4d0e158fd9fc282352a565ab7 Mon Sep 17 00:00:00 2001
From: jonny rhea <jonathan.rhea@gmail.com>
Date: Tue, 19 Nov 2019 00:01:16 -0600
Subject: [PATCH] implemented test_make_a_call

---
 .../test/java/org/ethereum/evmc/EvmcTest.java | 46 +++++++++++++++++--
 1 file changed, 43 insertions(+), 3 deletions(-)

diff --git a/bindings/java/java/src/test/java/org/ethereum/evmc/EvmcTest.java b/bindings/java/java/src/test/java/org/ethereum/evmc/EvmcTest.java
index d657e625e..816b0671e 100644
--- a/bindings/java/java/src/test/java/org/ethereum/evmc/EvmcTest.java
+++ b/bindings/java/java/src/test/java/org/ethereum/evmc/EvmcTest.java
@@ -42,6 +42,7 @@ void test_return_address() {
     assert (gasLeft == 0);
   }
 
+  /** Tests callbacks: get_storage_fn & set_storage_fn */
   @Test
   void test_counter() {
     EvmcVm.init(System.getProperty("user.dir") + "/../c/build/example_vm.so");
@@ -70,6 +71,7 @@ void test_counter() {
     assert (gasLeft == 0);
   }
 
+  /** Tests callbacks: get_tx_context_fn */
   @Test
   void test_return_block_number() {
     EvmcVm.init(System.getProperty("user.dir") + "/../c/build/example_vm.so");
@@ -84,18 +86,18 @@ void test_return_block_number() {
     long gas = 200000;
     int depth = 0;
     ByteBuffer msg =
-            new TestMessage(kind, sender, destination, value, inputData, gas, depth).toByteBuffer();
+        new TestMessage(kind, sender, destination, value, inputData, gas, depth).toByteBuffer();
 
     byte[] code = {0x43, 0x60, 0x00, 0x52, 0x59, 0x60, 0x00, (byte) 0xf3}; // return_block_number(
     ByteBuffer bbcode = ByteBuffer.allocateDirect(code.length).put(code);
 
     ByteBuffer result =
-            EvmcVm.execute(context, BYZANTIUM, msg, bbcode, code.length).order(ByteOrder.nativeOrder());
+        EvmcVm.execute(context, BYZANTIUM, msg, bbcode, code.length).order(ByteOrder.nativeOrder());
     int statusCode = result.getInt();
     result.getInt(); // padding
     long gasLeft = result.getLong();
     assert (statusCode == 0);
-    assert (gasLeft == gas/2);
+    assert (gasLeft == gas / 2);
   }
 
   /** Tests callbacks: get_tx_context_fn & set_storage_fn */
@@ -129,6 +131,44 @@ void test_save_return_block_number() {
     assert (gasLeft == gas / 2);
   }
 
+  /** Tests callbacks: call_fn */
+  @Test
+  void test_make_a_call() {
+    EvmcVm.init(System.getProperty("user.dir") + "/../c/build/example_vm.so");
+    HostContext context = new TestHostContext();
+    int BYZANTIUM = 4;
+    int EVMC_CALL = 0;
+    int kind = EVMC_CALL;
+    char[] sender = "39bf71de1b7d7be3b51\0".toCharArray();
+    char[] destination = "53cf77204eEef952e25\0".toCharArray();
+    char[] value = "1\0".toCharArray();
+    char[] inputData = "hello w\0".toCharArray();
+    long gas = 200000;
+    int depth = 0;
+    ByteBuffer msg =
+        new TestMessage(kind, sender, destination, value, inputData, gas, depth).toByteBuffer();
+    byte[] code = {
+      0x60,
+      0x00,
+      (byte) 0x80,
+      (byte) 0x80,
+      (byte) 0x80,
+      (byte) 0x80,
+      (byte) 0x80,
+      (byte) 0x80,
+      (byte) 0xf1
+    }; // make_a_call(
+    ByteBuffer bbcode = ByteBuffer.allocateDirect(code.length).put(code);
+
+    ByteBuffer result =
+        EvmcVm.execute(context, BYZANTIUM, msg, bbcode, code.length).order(ByteOrder.nativeOrder());
+    int statusCode = result.getInt();
+    result.getInt(); // padding
+    long gasLeft = result.getLong();
+    assert (statusCode == 0);
+    assert (gasLeft == 0);
+  }
+
   @Test
   void test_EVMC_CREATE() {
     EvmcVm.init(System.getProperty("user.dir") + "/../c/build/example_vm.so");