From 099e398bf460dc0b820a531b4dd63c9aa5fc1094 Mon Sep 17 00:00:00 2001
From: Andre Medeiros <me@andremedeiros.info>
Date: Sun, 23 Sep 2018 19:07:57 -0400
Subject: [PATCH] Filter out interfaces from the coverage report

---
 lib/modules/coverage/contract_source.js  | 5 +++++
 lib/modules/coverage/contract_sources.js | 1 +
 2 files changed, 6 insertions(+)

diff --git a/lib/modules/coverage/contract_source.js b/lib/modules/coverage/contract_source.js
index 579442f7d..a0c368215 100644
--- a/lib/modules/coverage/contract_source.js
+++ b/lib/modules/coverage/contract_source.js
@@ -97,6 +97,11 @@ class ContractSource {
     }
   }
 
+  isInterface() {
+    return this.contractBytecode !== undefined &&
+      Object.values(this.contractBytecode).every((contractBytecode) => { return (Object.values(contractBytecode).length <= 1); });
+  }
+
   /*eslint complexity: ["error", 38]*/
   generateCodeCoverage(trace) {
     if(!this.ast || !this.contractBytecode) throw new Error('Error generating coverage: solc output was not assigned');
diff --git a/lib/modules/coverage/contract_sources.js b/lib/modules/coverage/contract_sources.js
index 602dca86b..2dec7dbb5 100644
--- a/lib/modules/coverage/contract_sources.js
+++ b/lib/modules/coverage/contract_sources.js
@@ -60,6 +60,7 @@ class ContractSources {
     var coverageReport = {};
 
     for(var file in this.files) {
+      if(this.files[file].isInterface()) continue;
       coverageReport[file] = this.files[file].generateCodeCoverage(trace);
     }