rewrite only the PATH var

Author: Hweinstock

packages/core/src/test/shared/utilities/pathFind.test.ts

@@ -43,14 +43,14 @@ describe('pathFind', function () {
     })
 
     describe('findSshPath', function () {
-        let previousEnv: NodeJS.ProcessEnv
+        let previousPath: string
 
         beforeEach(function () {
-            previousEnv = testutil.copyEnv()
+            previousPath = testutil.copyEnv().PATH!
         })
 
         afterEach(function () {
-            process.env = previousEnv
+            process.env.PATH = previousPath
         })
 
         it('first tries ssh in $PATH (Non-Windows)', async function () {

packages/core/src/test/shared/utilities/testUtils.test.ts

@@ -17,7 +17,7 @@ describe('setEnv', function () {
         assert.strictEqual(copyEnv().PATH, fakePath)
 
         process.env.PATH = originalPath
-        assert.strictEqual(copyEnv(), originalPath)
+        assert.strictEqual(copyEnv().PATH, originalPath)
     })
 })