Reduce debug output in tests

src/analysis-paths.test.ts

@@ -2,6 +2,9 @@ import test from 'ava';
 
 import * as analysisPaths from './analysis-paths';
 import * as configUtils from './config-utils';
+import {silenceDebugOutput} from './testing-utils';
+
+silenceDebugOutput(test);
 
 test("emptyPaths", async t => {
     let config = new configUtils.Config();

src/config-utils.test.ts

@@ -3,8 +3,11 @@ import * as fs from 'fs';
 import * as path from 'path';
 
 import * as configUtils from './config-utils';
+import {silenceDebugOutput} from './testing-utils';
 import * as util from './util';
 
+silenceDebugOutput(test);
+
 function setInput(name: string, value: string | undefined) {
   // Transformation copied from
   // https://github.com/actions/toolkit/blob/05e39f551d33e1688f61b209ab5cdd335198f1b8/packages/core/src/core.ts#L69

src/external-queries.test.ts

@@ -4,8 +4,11 @@ import * as path from "path";
 
 import * as configUtils from "./config-utils";
 import * as externalQueries from "./external-queries";
+import {silenceDebugOutput} from './testing-utils';
 import * as util from "./util";
 
+silenceDebugOutput(test);
+
 test("checkoutExternalQueries", async t => {
     let config = new configUtils.Config();
     config.externalQueries = [

src/fingerprints.test.ts

@@ -4,6 +4,9 @@ import * as fs from 'fs';
 import * as path from 'path';
 
 import * as fingerprints from './fingerprints';
+import {silenceDebugOutput} from './testing-utils';
+
+silenceDebugOutput(test);
 
 function testHash(t: ava.Assertions, input: string, expectedHashes: string[]) {
     let index = 0;

src/testing-utils.ts

@@ -0,0 +1,27 @@
+import {TestInterface} from 'ava';
+
+export function silenceDebugOutput(test: TestInterface<any>) {
+  const typedTest = test as TestInterface<{write: any}>;
+
+  typedTest.beforeEach(t => {
+      const processStdoutWrite = process.stdout.write.bind(process.stdout);
+      t.context.write = processStdoutWrite;
+      process.stdout.write = (str: Uint8Array | string, encoding?: any, cb?: (err?: Error) => void) => {
+          // Core library will directly call process.stdout.write for commands
+          // We don't want debug output to be included in tests
+          if (typeof str === "string") {
+            str = str.replace(/::(info|debug|warning).*/, '');
+            if (str.trim() !== "") {
+                processStdoutWrite(str, encoding, cb);
+            }
+          } else {
+            processStdoutWrite(str, encoding, cb);
+          }
+          return true;
+      };
+  });
+
+  typedTest.afterEach(t => {
+      process.stdout.write = t.context.write;
+  });
+}

src/upload-lib.test.ts

@@ -1,7 +1,10 @@
 import test from 'ava';
 
+import {silenceDebugOutput} from './testing-utils';
 import * as uploadLib from './upload-lib';
 
+silenceDebugOutput(test);
+
 test('validateSarifFileSchema - valid', t => {
   const inputFile = __dirname + '/../src/testdata/valid-sarif.sarif';
   t.true(uploadLib.validateSarifFileSchema(inputFile));