another test and bugs

src/installer.ts

@@ -3,6 +3,7 @@ import * as path from 'path';
 import * as semver from 'semver';
 import * as httpm from '@actions/http-client';
 import * as sys from './system';
+import {debug} from '@actions/core';
 
 export async function downloadGo(
   versionSpec: string,
@@ -12,24 +13,30 @@ export async function downloadGo(
 
   try {
     let match: IGoVersion | undefined = await findMatch(versionSpec, stable);
+    if (match) {
+      console.log('match', match.version);
+    }
 
     if (match) {
       // download
+      debug(`match ${match.version}`);
       let downloadUrl: string = `https://storage.googleapis.com/golang/${match.files[0].filename}`;
       let downloadPath: string = await tc.downloadTool(downloadUrl);
+      debug(`downloaded to ${downloadPath}`);
 
       // extract
       let extPath: string =
         sys.getPlatform() == 'windows'
           ? await tc.extractZip(downloadPath)
           : await tc.extractTar(downloadPath);
+      debug(`extracted to ${extPath}`);
 
       // extracts with a root folder that matches the fileName downloaded
       const toolRoot = path.join(extPath, 'go');
       toolPath = await tc.cacheDir(toolRoot, 'go', versionSpec);
     }
   } catch (error) {
-    throw `Failed to download version ${versionSpec}: ${error}`;
+    throw new Error(`Failed to download version ${versionSpec}: ${error}`);
   }
 
   return toolPath;
@@ -55,6 +62,7 @@ export async function findMatch(
   let archFilter = sys.getArch();
   let platFilter = sys.getPlatform();
 
+  let result: IGoVersion | undefined;
   let match: IGoVersion | undefined;
 
   const dlUrl: string = 'https://golang.org/dl/?mode=json&include=all';
@@ -66,6 +74,7 @@ export async function findMatch(
   let goFile: IGoVersionFile | undefined;
   for (let i = 0; i < candidates.length; i++) {
     let candidate: IGoVersion = candidates[i];
+    console.log(JSON.stringify(candidate, null, 2));
     let version = candidate.version.replace('go', '');
 
     // 1.13.0 is advertised as 1.13 preventing being able to match exactly 1.13.0
@@ -75,12 +84,15 @@ export async function findMatch(
       version = version + '.0';
     }
 
+    debug(`check ${version} satisfies ${versionSpec}`);
     if (semver.satisfies(version, versionSpec) && candidate.stable == stable) {
       goFile = candidate.files.find(file => {
+        debug(`${file.arch}===${archFilter} && ${file.os}===${platFilter}`);
         return file.arch === archFilter && file.os === platFilter;
       });
 
       if (goFile) {
+        debug(`matched ${candidate.version}`);
         match = candidate;
         break;
       }
@@ -88,10 +100,12 @@ export async function findMatch(
   }
 
   if (match && goFile) {
-    match.files = [goFile];
+    // clone since we're mutating the file list to be only the file that matches
+    result = <IGoVersion>Object.assign({}, match);
+    result.files = [goFile];
   }
 
-  return match;
+  return result;
 }
 
 export async function getVersions(dlUrl: string): Promise<IGoVersion[] | null> {