diff --git a/iamy/aws.go b/iamy/aws.go
index 79ccdfb..9f5e3c1 100644
--- a/iamy/aws.go
+++ b/iamy/aws.go
@@ -22,7 +22,7 @@ type AwsFetcher struct {
 
 	Debug *log.Logger
 
-	iam     *iamClient
+	iam     iamClientiface
 	s3      *s3Client
 	account *Account
 	data    AccountData
@@ -120,8 +120,11 @@ func (a *AwsFetcher) fetchIamData() error {
 			}),
 		},
 		func(resp *iam.GetAccountAuthorizationDetailsOutput, lastPage bool) bool {
+			// There's a bug here. This doesn't set the variable outside this function scope
+			// So IAMY just swallows any errors returned from populateIamData()
 			populateIamDataErr = a.populateIamData(resp)
 			if populateIamDataErr != nil {
+				log.Println("Error Fetching IAM Data", populateIamDataErr)
 				return false
 			}
 			return true
diff --git a/iamy/aws_test.go b/iamy/aws_test.go
index 62e27c2..aff5cbe 100644
--- a/iamy/aws_test.go
+++ b/iamy/aws_test.go
@@ -2,6 +2,10 @@ package iamy
 
 import (
 	"testing"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/iam"
 )
 
 func TestIsSkippableManagedResource(t *testing.T) {
@@ -45,3 +49,56 @@ func TestIsSkippableManagedResource(t *testing.T) {
 		})
 	}
 }
+
+type mockIam struct {
+	iamClientiface
+	policyDocument string
+}
+
+func (m *mockIam) GetAccountAuthorizationDetailsPages(input *iam.GetAccountAuthorizationDetailsInput, fn func(*iam.GetAccountAuthorizationDetailsOutput, bool) bool) error {
+	now := time.Now()
+	fn(&iam.GetAccountAuthorizationDetailsOutput{
+		Policies: []*iam.ManagedPolicyDetail{
+			{
+				Arn:                           aws.String("arn:aws:iam::aws:policy/IAMReadOnlyAccess"),
+				AttachmentCount:               aws.Int64(0),
+				CreateDate:                    &now,
+				DefaultVersionId:              aws.String("v4"),
+				Description:                   aws.String("Provides read only access to IAM via the AWS Management Console."),
+				IsAttachable:                  aws.Bool(true),
+				Path:                          aws.String("/"),
+				PermissionsBoundaryUsageCount: aws.Int64(0),
+				PolicyId:                      aws.String("ANPAJKSO7NDY4T57MWDSQ"),
+				PolicyName:                    aws.String("IAMReadOnlyAccess"),
+				PolicyVersionList: []*iam.PolicyVersion{
+					{
+						CreateDate:       &now,
+						Document:         &m.policyDocument,
+						IsDefaultVersion: aws.Bool(true),
+						VersionId:        aws.String("v4"),
+					},
+				},
+				UpdateDate: &now,
+			},
+		},
+	}, true)
+	return nil
+}
+
+func (m *mockIam) ListInstanceProfilesPages(*iam.ListInstanceProfilesInput, func(*iam.ListInstanceProfilesOutput, bool) bool) error {
+	return nil
+}
+func TestFetchIamData(t *testing.T) {
+	mockIamClient := &mockIam{
+		policyDocument: "InvalidPolicy%zz}}",
+	}
+
+	fetcher := AwsFetcher{
+		SkipFetchingPolicyAndRoleDescriptions: true,
+		iam:                                   mockIamClient,
+	}
+	err := fetcher.fetchIamData()
+	if err == nil {
+		t.Error("We expected fetch IAM to fail because the policy document was invalid. But it didn't")
+	}
+}
diff --git a/iamy/iam.go b/iamy/iam.go
index d6489ee..ef82f99 100644
--- a/iamy/iam.go
+++ b/iamy/iam.go
@@ -7,6 +7,13 @@ import (
 	"github.com/aws/aws-sdk-go/service/iam/iamiface"
 )
 
+type iamClientiface interface {
+	iamiface.IAMAPI
+	getPolicyDescription(string) (string, error)
+	getRoleDescription(string) (string, error)
+	MustGetSecurityCredsForUser(string) ([]string, []string, bool)
+}
+
 type iamClient struct {
 	iamiface.IAMAPI
 }