test: use strictEqual in test-zlib-truncated

PR-URL: #9858 Reviewed-By: Rich Trott <[email protected]>

Author: bencripps

test/parallel/test-zlib-truncated.js

@@ -24,17 +24,18 @@ const inputString = 'ΩΩLorem ipsum dolor sit amet, consectetur adipiscing eli'
 zlib[methods.comp](inputString,function(err,compressed){
 assert(!err);
 consttruncated=compressed.slice(0,compressed.length/2);
+consttoUTF8=(buffer)=>buffer.toString('utf-8');
 
 // sync sanity
 assert.doesNotThrow(function(){
 constdecompressed=zlib[methods.decompSync](compressed);
-assert.equal(decompressed,inputString);
+assert.strictEqual(toUTF8(decompressed),inputString);
 });
 
 // async sanity
 zlib[methods.decomp](compressed,function(err,result){
 assert.ifError(err);
-assert.equal(result,inputString);
+assert.strictEqual(toUTF8(result),inputString);
 });
 
 // sync truncated input test
@@ -51,17 +52,15 @@ const inputString = 'ΩΩLorem ipsum dolor sit amet, consectetur adipiscing eli'
 
 // sync truncated input test, finishFlush = Z_SYNC_FLUSH
 assert.doesNotThrow(function(){
-constresult=zlib[methods.decompSync](truncated,syncFlushOpt)
-.toString();
-assert.equal(result,inputString.substr(0,result.length));
+constresult=toUTF8(zlib[methods.decompSync](truncated,syncFlushOpt));
+assert.strictEqual(result,inputString.substr(0,result.length));
 });
 
 // async truncated input test, finishFlush = Z_SYNC_FLUSH
 zlib[methods.decomp](truncated,syncFlushOpt,function(err,decompressed){
 assert.ifError(err);
-
-constresult=decompressed.toString();
-assert.equal(result,inputString.substr(0,result.length));
+constresult=toUTF8(decompressed);
+assert.strictEqual(result,inputString.substr(0,result.length));
 });
 });
 });