Add abi diff plugin method tests

plugins/hardhat.plugin.js

@@ -86,6 +86,7 @@ task("coverage", "Generates a code coverage report for tests")
   .addOptionalParam("solcoverjs", ui.flags.solcoverjs, "", types.string)
   .addOptionalParam('temp',       ui.flags.temp,       "", types.string)
   .addFlag('matrix', ui.flags.testMatrix)
+  .addFlag('abi', ui.flags.abi)
   .setAction(async function(args, env){
 
   let error;
@@ -119,6 +120,16 @@ task("coverage", "Generates a code coverage report for tests")
     }
     env.hardhatArguments = Object.assign(env.hardhatArguments, flags)
 
+    // ===========================
+    // Generate abi diff component
+    // (This flag only useful within codecheck context)
+    // ===========================
+    if (args.abi){
+      measureCoverage = false;
+      await nomiclabsUtils.generateHumanReadableAbiList(env, api, TASK_COMPILE);
+      return;
+    }
+
     // ================
     // Instrumentation
     // ================

plugins/resources/nomiclabs.ui.js

@@ -12,6 +12,9 @@ class PluginUI extends UI {
 
       testMatrix: `Generate a json object which maps which unit tests hit which lines of code.`,
 
+      abi:        `Generate a json object which can be used to produce a unified diff of your ` +
+                  `contracts public interface between two commits.`,
+
       solcoverjs: `Relative path from working directory to config. ` +
                   `Useful for monorepo packages that share settings.`,
 

plugins/resources/nomiclabs.utils.js

@@ -189,7 +189,7 @@ async function getAllArtifacts(env){
   const all = [];
   const qualifiedNames = await env.artifacts.getArtifactPaths();
   for (const name of qualifiedNames){
-    all.push(await env.artifacts.readArtifact(name));
+    all.push(require(name));
   }
   return all;
 }
@@ -202,9 +202,9 @@ async function getAllArtifacts(env){
  * @param  {HRE}    env
  * @param  {SolidityCoverageAPI} api
  */
-async function generateHumanReadableAbiList(env, api){
+async function generateHumanReadableAbiList(env, api, TASK_COMPILE){
   await env.run(TASK_COMPILE);
-  const _artifacts = getAllArtifacts(env);
+  const _artifacts = await getAllArtifacts(env);
   const list = api.abiUtils.generateHumanReadableAbiList(_artifacts)
   api.saveHumanReadableAbis(list);
 }
@@ -261,6 +261,7 @@ module.exports = {
   getTestFilePaths,
   setNetworkFrom,
   collectTestMatrixData,
-  getAllArtifacts
+  getAllArtifacts,
+  generateHumanReadableAbiList
 }
 

plugins/resources/truffle.utils.js

@@ -63,7 +63,7 @@ function getAllArtifacts(config){
  * @param  {SolidityCoverageAPI} api
  */
 async function generateHumanReadableAbiList(config, truffle, api){
-  await truffle.compile(config);
+  await truffle.contracts.compile(config);
   const _artifacts = getAllArtifacts(config);
   const list = api.abiUtils.generateHumanReadableAbiList(_artifacts)
   api.saveHumanReadableAbis(list);
@@ -270,5 +270,6 @@ module.exports = {
   loadLibrary,
   normalizeConfig,
   filteredLogger,
-  collectTestMatrixData
+  collectTestMatrixData,
+  generateHumanReadableAbiList
 }

plugins/truffle.plugin.js

@@ -30,9 +30,18 @@ async function plugin(config){
     truffle = truffleUtils.loadLibrary(config);
     api = new API(utils.loadSolcoverJS(config));
 
-    truffleUtils.setNetwork(config, api);
+    // ===========================
+    // Generate abi diff component
+    // (This flag only useful within codecheck context)
+    // ===========================
+    if (config.abi){
+      await truffleUtils.generateHumanReadableAbiList(config, truffle, api);
+      return;
+    }
 
     // Server launch
+    truffleUtils.setNetwork(config, api);
+
     const client = api.client || truffle.ganache;
     const address = await api.ganache(client);
     const accountsRequest = await utils.getAccountsGanache(api.server.provider);

test/units/hardhat/flags.js

@@ -191,5 +191,38 @@ describe('Hardhat Plugin: command line options', function() {
 
     assert.deepEqual(producedMatrix, expectedMatrix);
   });
+
+  it('--abi', async function(){
+    const expected = [
+      {
+        "contractName": "Migrations",
+        "humanReadableAbiList": [
+         "function last_completed_migration() view returns (uint256)",
+         "function owner() view returns (address)",
+         "function setCompleted(uint256) nonpayable",
+         "function upgrade(address) nonpayable"
+        ]
+      },
+      {
+        "contractName": "Simple",
+        "humanReadableAbiList": [
+         "function getX() view returns (uint256)",
+         "function test(uint256) nonpayable"
+        ]
+      }
+    ];
+
+    const taskArgs = {
+      abi: true
+    }
+    mock.install('Simple', 'simple.js', solcoverConfig);
+    mock.hardhatSetupEnv(this);
+
+    await this.env.run("coverage", taskArgs);
+
+    const outputPath = path.join(process.cwd(), 'humanReadableAbis.json');
+    const output = require(outputPath);
+    assert.deepEqual(output, expected);
+  })
 });
 

test/units/truffle/flags.js

@@ -289,5 +289,34 @@ describe('Truffle Plugin: command line options', function() {
     assert.deepEqual(producedMatrix, expectedMatrix);
     process.env.TRUFFLE_TEST = false;
   });
+
+  it('--abi', async function(){
+    const expected = [
+      {
+        "contractName": "Migrations",
+        "humanReadableAbiList": [
+         "function last_completed_migration() view returns (uint256)",
+         "function owner() view returns (address)",
+         "function setCompleted(uint256) nonpayable",
+         "function upgrade(address) nonpayable"
+        ]
+      },
+      {
+        "contractName": "Simple",
+        "humanReadableAbiList": [
+         "function getX() view returns (uint256)",
+         "function test(uint256) nonpayable"
+        ]
+      }
+    ];
+
+    truffleConfig.abi = true;
+    mock.install('Simple', 'simple.js', solcoverConfig);
+    await plugin(truffleConfig);
+
+    const outputPath = path.join(process.cwd(), mock.pathToTemp('./humanReadableAbis.json'));
+    const output = require(outputPath);
+    assert.deepEqual(output, expected);
+  })
 });