tests for custom optimize option

libs/remix-tests/src/compiler.ts

@@ -126,10 +126,11 @@ export function compileFileOrFiles(filename: string, isDirectory: boolean, opts:
         async.waterfall([
             function loadCompiler(next) {
                 compiler = new RemixCompiler()
+                if(compilerConfig) {
                     const {currentCompilerUrl, evmVersion, optimize, runs} = compilerConfig
-                evmVersion ? compiler.set('evmVersion', evmVersion) :
-                optimize ? compiler.set('optimize', optimize) :
-                runs ? compiler.set('runs', runs) : ''
+                    evmVersion ? compiler.set('evmVersion', evmVersion) : null
+                    optimize ? compiler.set('optimize', optimize) : null
+                    runs ? compiler.set('runs', runs) : null
                     if(currentCompilerUrl) {
                         compiler.loadRemoteVersion(currentCompilerUrl)
                         compiler.event.register('compilerLoaded', this, function (version) {
@@ -139,6 +140,10 @@ export function compileFileOrFiles(filename: string, isDirectory: boolean, opts:
                         compiler.onInternalCompilerLoaded()
                         next()
                     }
+                } else {
+                    compiler.onInternalCompilerLoaded()
+                    next()
+                }
             },
             function doCompilation(next) {
                 // @ts-ignore

libs/remix-tests/tests/testRunner.cli.spec.ts

@@ -77,5 +77,18 @@ Commands:
       // macth fail test details
       expect(res.stdout.toString().trim()).toMatch(/error: okFailTest fails/)
     })
+
+    test('remix-tests running a test file by enabling optimization', () => {
+      const res = spawnSync(executablePath, ['--optimize', 'true', resolve(__dirname + '/examples_0/assert_ok_test.sol')])
+      // match initial lines
+      expect(res.stdout.toString().trim().includes('Optimization is enabled')).toBeTruthy()
+      expect(res.stdout.toString().trim()).toMatch(/:: Running remix-tests - Unit testing for solidity ::/)
+      expect(res.stdout.toString().trim()).toMatch(/creation of library remix_tests.sol:Assert pending.../)
+      // match test result
+      expect(res.stdout.toString().trim()).toMatch(/Ok pass test/)
+      expect(res.stdout.toString().trim()).toMatch(/Ok fail test/)
+      // macth fail test details
+      expect(res.stdout.toString().trim()).toMatch(/error: okFailTest fails/)
+    })
   })
 })
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