GC: Backup: SharePoint: Test Fetch/Get Functions (#2182)

## Description
Tests the functionality of GC's retrieval functions

src/internal/connector/sharepoint/site_page_test.go

@@ -0,0 +1,73 @@
+package sharepoint
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/stretchr/testify/suite"
+
+	"github.com/alcionai/corso/src/internal/tester"
+	"github.com/alcionai/corso/src/pkg/account"
+)
+
+type SharePointPageSuite struct {
+	suite.Suite
+
+	creds account.M365Config
+}
+
+func (suite *SharePointPageSuite) SetupSuite() {
+	t := suite.T()
+	a := tester.NewM365Account(t)
+	m365, err := a.M365Config()
+	require.NoError(t, err)
+
+	suite.creds = m365
+}
+
+func TestSharePointPageSuite(t *testing.T) {
+	tester.RunOnAny(
+		t,
+		tester.CorsoCITests,
+		tester.CorsoGraphConnectorSharePointTests)
+	suite.Run(t, new(SharePointPageSuite))
+}
+
+func (suite *SharePointPageSuite) TestFetchPages() {
+	ctx, flush := tester.NewContext()
+	defer flush()
+
+	t := suite.T()
+	siteID := tester.M365SiteID(t)
+	service, err := createTestService(suite.creds)
+	require.NoError(t, err)
+
+	pgs, err := fetchPages(ctx, *service, siteID)
+	assert.NoError(t, err)
+	require.NotNil(t, pgs)
+	assert.NotZero(t, len(pgs))
+
+	for _, entry := range pgs {
+		t.Logf("id: %s\t name: %s\n", entry.id, entry.name)
+	}
+}
+
+func (suite *SharePointPageSuite) TestGetSitePage() {
+	ctx, flush := tester.NewContext()
+	defer flush()
+
+	t := suite.T()
+	siteID := tester.M365SiteID(t)
+
+	service, err := createTestService(suite.creds)
+	require.NoError(t, err)
+	tuples, err := fetchPages(ctx, *service, siteID)
+	require.NoError(t, err)
+	require.NotNil(t, tuples)
+
+	jobs := []string{tuples[0].id}
+	pages, err := GetSitePage(ctx, service, siteID, jobs)
+	assert.NoError(t, err)
+	assert.NotEmpty(t, pages)
+}