diff --git a/aws/support.go b/aws/support.go
index 06cd66e..c97b5af 100644
--- a/aws/support.go
+++ b/aws/support.go
@@ -6,12 +6,13 @@ import (
 
 	"github.com/aws/aws-sdk-go-v2/config"
 	"github.com/aws/aws-sdk-go-v2/service/support"
+	"github.com/aws/aws-sdk-go-v2/service/support/types"
 )
 
 type Case struct {
 	Subject     string `json:"subject"`
 	Status      string `json:"status"`
-	SubmitteBy  string `json:"submitteBy"`
+	SubmittedBy string `json:"SubmittedBy"`
 	TimeCreated string `json:"timeCreated"`
 	Url         string `json:"url"`
 }
@@ -25,7 +26,15 @@ func NewDescribeCasesInput(aftertime, beforetime, language string, include bool)
 	}
 }
 
-func GetCases(input *support.DescribeCasesInput) []*Case {
+func GetCaseList(input *support.DescribeCasesInput) []*Case {
+	client := loadConfig()
+	output := outputCases(client, input)
+	caseDetails := extractCaseDetails(output)
+	caseList := makeCaseList(caseDetails)
+	return caseList
+}
+
+func loadConfig() *support.Client {
 	// Load the Shared AWS Configuration (~/.aws/config)
 	cfg, err := config.LoadDefaultConfig(
 		context.TODO(),
@@ -33,31 +42,33 @@ func GetCases(input *support.DescribeCasesInput) []*Case {
 	if err != nil {
 		log.Fatal(err)
 	}
+	return support.NewFromConfig(cfg)
+}
 
-	client := support.NewFromConfig(cfg)
-
-	output, err := client.DescribeCases(context.TODO(), input)
+func outputCases(c *support.Client, i *support.DescribeCasesInput) *support.DescribeCasesOutput {
+	output, err := c.DescribeCases(context.TODO(), i)
 	if err != nil {
 		log.Fatal(err)
 	}
-
-	cases := ArrangeCases(output)
-	return cases
+	return output
 }
 
-func ArrangeCases(output *support.DescribeCasesOutput) []*Case {
-	var cases []*Case
+func extractCaseDetails(o *support.DescribeCasesOutput) []types.CaseDetails {
+	caseDetails := o.Cases
+	return caseDetails
+}
 
-	caseDetails := output.Cases
-	for _, c := range caseDetails {
+func makeCaseList(cd []types.CaseDetails) []*Case {
+	var caseList []*Case
+	for _, c := range cd {
 		eachCase := Case{
 			Subject:     *c.Subject,
 			Status:      *c.Status,
-			SubmitteBy:  *c.SubmittedBy,
+			SubmittedBy: *c.SubmittedBy,
 			TimeCreated: *c.TimeCreated,
 			Url:         "https://console.aws.amazon.com/support/home#/case/?displayId=" + *c.DisplayId + "%26language=" + *c.Language,
 		}
-		cases = append(cases, &eachCase)
+		caseList = append(caseList, &eachCase)
 	}
-	return cases
+	return caseList
 }
diff --git a/aws/support_test.go b/aws/support_test.go
new file mode 100644
index 0000000..ccd21df
--- /dev/null
+++ b/aws/support_test.go
@@ -0,0 +1,50 @@
+package aws
+
+import (
+	"testing"
+
+	"github.com/aws/aws-sdk-go-v2/service/support/types"
+)
+
+func Test_Support(t *testing.T) {
+	caseId := "case-12345678910-2013-c4c1d2bf33c5cf47"
+	ccEmailAddresses := []string{"cc@example.com"}
+	displayId := "1234567890"
+	language := "ja"
+	status := "opened"
+	subject := "Test Subject"
+	submittedBy := "test@example.com"
+	timeCreated := "2021-12-01T12:00:00.000Z"
+	url := "https://console.aws.amazon.com/support/home#/case/?displayId=1234567890%26language=ja"
+
+	caseDetails := []types.CaseDetails{
+		{
+			CaseId:           &caseId,
+			CcEmailAddresses: ccEmailAddresses,
+			DisplayId:        &displayId,
+			Language:         &language,
+			Status:           &status,
+			Subject:          &subject,
+			SubmittedBy:      &submittedBy,
+			TimeCreated:      &timeCreated,
+		},
+	}
+	caseList := makeCaseList(caseDetails)
+	for _, c := range caseList {
+		if c.Subject != subject {
+			t.Fatalf("Fail: got = %v, want = %v", c.Subject, subject)
+		}
+		if c.Status != status {
+			t.Fatalf("Fail: got = %v, want = %v", c.Status, status)
+		}
+		if c.SubmittedBy != submittedBy {
+			t.Fatalf("Fail: got = %v, want = %v", c.SubmittedBy, submittedBy)
+		}
+		if c.TimeCreated != timeCreated {
+			t.Fatalf("Fail: got = %v, want = %v", c.TimeCreated, timeCreated)
+		}
+		if c.Url != url {
+			t.Fatalf("Fail: got = %v, want = %v", c.Url, url)
+		}
+	}
+}
diff --git a/main.go b/main.go
index 6bc998b..b9daf3d 100644
--- a/main.go
+++ b/main.go
@@ -25,9 +25,9 @@ func main() {
 	}
 
 	input := aws.NewDescribeCasesInput(aftertime, beforetime, language, include_resolved_cases_b)
-	cases := aws.GetCases(input)
+	caseList := aws.GetCaseList(input)
 
-	payload := slack.NewPayload("AWS Support Case Notice", slack.ConvertToNoticeFormat(cases))
+	payload := slack.NewPayload("AWS Support Case Notice", slack.ConvertToNoticeFormat(caseList))
 	notice := slack.NewSlackNotice(webhookUrl, payload)
 	notice.Run()
 }
diff --git a/slack/notice.go b/slack/notice.go
index 48108a6..d859b8d 100644
--- a/slack/notice.go
+++ b/slack/notice.go
@@ -24,7 +24,7 @@ type Payload struct {
 func ConvertToNoticeFormat(cases []*aws.Case) string {
 	text := `Subject: {{ .Subject }}
 Status: {{ .Status }}
-SubmitteBy: {{ .SubmitteBy }}
+SubmittedBy: {{ .SubmittedBy }}
 TimeCreated: {{ .TimeCreated }}
 Url: {{ .Url }}
 `
diff --git a/slack/notice_test.go b/slack/notice_test.go
index 301f000..8c52100 100644
--- a/slack/notice_test.go
+++ b/slack/notice_test.go
@@ -33,7 +33,7 @@ func Test_Notice(t *testing.T) {
 				{
 					Subject:     "Test",
 					Status:      "opened",
-					SubmitteBy:  "user@example.com",
+					SubmittedBy: "user@example.com",
 					TimeCreated: "2021-03-01T01:43:57.974Z",
 					Url:         "https://console.aws.amazon.com/support/home#/case/?displayId=12345%26language=ja",
 				},
@@ -53,7 +53,7 @@ func Test_Notice(t *testing.T) {
 			payload := NewPayload("AWS Support Case Notice", ConvertToNoticeFormat(tt.cases))
 			notice := NewSlackNotice(tt.webhookUrl, payload)
 			if statusCode := notice.Run(); statusCode != tt.wants.statusCode {
-				t.Fatalf("run() status: got = %v, want = %v", statusCode, tt.wants.statusCode)
+				t.Fatalf("Fail: got = %v, want = %v", statusCode, tt.wants.statusCode)
 			}
 		})
 	}