From 4ade674ada7596f1a7c5d0113815c5964e82db0f Mon Sep 17 00:00:00 2001
From: "F. Eugene Aumson" <gene@aumson.org>
Date: Thu, 13 Sep 2018 14:25:54 -0400
Subject: test multiple return values from a solidity method

---
 .../test/fixtures/contracts/MultipleReturnValues.sol |  7 +++++++
 packages/sol-doc/test/solidity_doc_generator_test.ts | 20 ++++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 packages/sol-doc/test/fixtures/contracts/MultipleReturnValues.sol

diff --git a/packages/sol-doc/test/fixtures/contracts/MultipleReturnValues.sol b/packages/sol-doc/test/fixtures/contracts/MultipleReturnValues.sol
new file mode 100644
index 000000000..1e898622c
--- /dev/null
+++ b/packages/sol-doc/test/fixtures/contracts/MultipleReturnValues.sol
@@ -0,0 +1,7 @@
+pragma solidity ^0.4.24;
+
+contract MultipleReturnValues {
+    function methodWithMultipleReturnValues() public pure returns(int, int) {
+        return (0, 0);
+    }
+}
diff --git a/packages/sol-doc/test/solidity_doc_generator_test.ts b/packages/sol-doc/test/solidity_doc_generator_test.ts
index 896690ce6..5004b1a90 100644
--- a/packages/sol-doc/test/solidity_doc_generator_test.ts
+++ b/packages/sol-doc/test/solidity_doc_generator_test.ts
@@ -153,6 +153,26 @@ describe('#SolidityDocGenerator', () => {
             expect(methodDoc.comment).to.equal('methodWithSolhintDirective @dev');
         });
     });
+    it('should document a method that returns multiple values', async () => {
+        const doc = await generateSolDocAsync(`${__dirname}/../../test/fixtures/contracts`, ['MultipleReturnValues']);
+        expect(doc.MultipleReturnValues).to.not.be.undefined();
+        expect(doc.MultipleReturnValues.methods).to.not.be.undefined();
+        let methodWithMultipleReturnValues: SolidityMethod | undefined;
+        for (const method of doc.MultipleReturnValues.methods) {
+            if (method.name === 'methodWithMultipleReturnValues') {
+                methodWithMultipleReturnValues = method;
+            }
+        }
+        if (_.isUndefined(methodWithMultipleReturnValues)) {
+            throw new Error('method should not be undefined');
+        }
+        const returnType = methodWithMultipleReturnValues.returnType;
+        expect(returnType.typeDocType).to.equal('tuple');
+        if (_.isUndefined(returnType.tupleElements)) {
+            throw new Error('returnType.tupleElements should not be undefined');
+        }
+        expect(returnType.tupleElements.length).to.equal(2);
+    });
 });
 
 function verifyTokenTransferProxyABIIsDocumented(doc: DocAgnosticFormat, contractName: string): void {
-- 
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