Reduce graph adapter & http wrapper test runtime (#5002)

<!-- PR description-->
Another retry related optimization. This PR reduces `TestGraphIntgSuite/TestAdapterWrap_retriesConnectionClose` runtime from 150sec to 0.7sec.


---

#### Does this PR need a docs update or release note?

- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No

#### Type of change

<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [x] 🧹 Tech Debt/Cleanup

#### Issue(s)

<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* #<issue>

#### Test Plan

<!-- How will this be tested prior to merging.-->
- [ ] 💪 Manual
- [x] ⚡ Unit test
- [ ] 💚 E2E

src/pkg/services/m365/api/graph/http_wrapper.go

@@ -17,6 +17,14 @@ import (
 	"github.com/alcionai/corso/src/pkg/logger"
 )
 
+// ---------------------------------------------------------------------------
+// HTTP wrapper config
+// ---------------------------------------------------------------------------
+
+const (
+	httpWrapperRetryDelay = 3 * time.Second
+)
+
 // ---------------------------------------------------------------------------
 // constructors
 // ---------------------------------------------------------------------------
@@ -60,7 +68,11 @@ func NewHTTPWrapper(
 
 	cc.apply(hc)
 
-	return &httpWrapper{hc, cc}
+	return &httpWrapper{
+		client:     hc,
+		config:     cc,
+		retryDelay: httpWrapperRetryDelay,
+	}
 }
 
 // NewNoTimeoutHTTPWrapper constructs a http wrapper with no context timeout.
@@ -114,7 +126,7 @@ func (hw httpWrapper) Request(
 	// a common expectation.
 	for i := 0; i < hw.config.maxConnectionRetries+1; i++ {
 		if i > 0 {
-			time.Sleep(3 * time.Second)
+			time.Sleep(hw.retryDelay)
 		}
 
 		ctx = clues.Add(ctx, "request_retry_iter", i)
@@ -156,8 +168,9 @@ func (hw httpWrapper) Request(
 
 type (
 	httpWrapper struct {
-		client *http.Client
-		config *clientConfig
+		client     *http.Client
+		config     *clientConfig
+		retryDelay time.Duration
 	}
 
 	customTransport struct {

src/pkg/services/m365/api/graph/http_wrapper_test.go

@@ -49,6 +49,9 @@ func (suite *HTTPWrapperIntgSuite) TestNewHTTPWrapper() {
 
 	require.NotNil(t, resp)
 	require.Equal(t, http.StatusOK, resp.StatusCode)
+
+	// Test http wrapper config
+	assert.Equal(t, httpWrapperRetryDelay, hw.retryDelay)
 }
 
 type mwForceResp struct {
@@ -180,6 +183,11 @@ func (suite *HTTPWrapperUnitSuite) TestNewHTTPWrapper_http2StreamErrorRetries()
 				appendMiddleware(&mwResp),
 				MaxConnectionRetries(test.retries))
 
+			// Configure retry delay to reduce test time. Retry delay doesn't
+			// really matter here since all requests will be intercepted by
+			// the test middleware.
+			hw.retryDelay = 0
+
 			_, err := hw.Request(ctx, http.MethodGet, url, nil, nil)
 			require.ErrorAs(t, err, &http2.StreamError{}, clues.ToCore(err))
 			require.Equal(t, test.expectRetries, tries, "count of retries")

src/pkg/services/m365/api/graph/service_test.go

@@ -226,7 +226,6 @@ func (suite *GraphIntgSuite) TestAdapterWrap_retriesConnectionClose() {
 	ctx, flush := tester.NewContext(t)
 	defer flush()
 
-	url := "https://graph.microsoft.com/fnords/beaux/regard"
 	retryInc := 0
 
 	// the panics should get caught and returned as errors
@@ -243,24 +242,21 @@ func (suite *GraphIntgSuite) TestAdapterWrap_retriesConnectionClose() {
 		suite.credentials.AzureClientID,
 		suite.credentials.AzureClientSecret,
 		count.New(),
-		appendMiddleware(&alwaysECONNRESET))
+		appendMiddleware(&alwaysECONNRESET),
+		// Configure retry middlewares so that they don't retry on connection reset.
+		// Those middlewares have their own tests to verify retries.
+		MaxRetries(-1))
 	require.NoError(t, err, clues.ToCore(err))
 
-	// Set retry delay to a low value to reduce test runtime.
+	// Retry delay doesn't really matter here since all requests will be intercepted
+	// by the test middleware. Set it to 0 to reduce test runtime.
 	aw := adpt.(*adapterWrap)
-	aw.retryDelay = 10 * time.Millisecond
-
-	// the query doesn't matter
-	_, err = users.NewItemCalendarsItemEventsDeltaRequestBuilder(url, adpt).Get(ctx, nil)
-	require.ErrorIs(t, err, syscall.ECONNRESET, clues.ToCore(err))
-	require.Equal(t, 16, retryInc, "number of retries")
-
-	retryInc = 0
+	aw.retryDelay = 0
 
 	// the query doesn't matter
 	_, err = NewService(adpt).Client().Users().Get(ctx, nil)
 	require.ErrorIs(t, err, syscall.ECONNRESET, clues.ToCore(err))
-	require.Equal(t, 16, retryInc, "number of retries")
+	require.Equal(t, 4, retryInc, "number of retries")
 }
 
 func (suite *GraphIntgSuite) TestAdapterWrap_retriesBadJWTToken() {
@@ -307,9 +303,10 @@ func (suite *GraphIntgSuite) TestAdapterWrap_retriesBadJWTToken() {
 		appendMiddleware(&alwaysBadJWT))
 	require.NoError(t, err, clues.ToCore(err))
 
-	// Set retry delay to a low value to reduce test runtime.
+	// Retry delay doesn't really matter here since all requests will be intercepted
+	// by the test middleware. Set it to 0 to reduce test runtime.
 	aw := adpt.(*adapterWrap)
-	aw.retryDelay = 10 * time.Millisecond
+	aw.retryDelay = 0
 
 	// When run locally this may fail. Not sure why it works in github but not locally.
 	// Pester keepers if it bothers you.
@@ -384,9 +381,10 @@ func (suite *GraphIntgSuite) TestAdapterWrap_retriesInvalidRequest() {
 		appendMiddleware(&returnsGraphResp))
 	require.NoError(t, err, clues.ToCore(err))
 
-	// Set retry delay to a low value to reduce test runtime.
+	// Retry delay doesn't really matter here since all requests will be intercepted
+	// by the test middleware. Set it to 0 to reduce test runtime.
 	aw := adpt.(*adapterWrap)
-	aw.retryDelay = 10 * time.Millisecond
+	aw.retryDelay = 0
 
 	table := []struct {
 		name            string