Do not overwrite institution sequence number if one already exists

cashLetter.go

@@ -4,7 +4,9 @@
 
 package imagecashletter
 
-import "fmt"
+import (
+	"fmt"
+)
 
 // CashLetterError is an Error that describes CashLetter validation issues
 type CashLetterError struct {
@@ -122,11 +124,17 @@ func (cl *CashLetter) build() error {
 		// Set Bundle Sequence Numbers
 		b.BundleHeader.SetBundleSequenceNumber(bundleSequenceNumber)
 
+		// Sequence  Number
+		cdSequenceNumber := 1
+
 		// Check Items
 		for _, cd := range b.Checks {
 
-			// Sequence  Number
-			cdSequenceNumber := 1
+			if cd.EceInstitutionItemSequenceNumber != "" {
+				i := cd.parseNumField(cd.EceInstitutionItemSequenceNumber)
+				cdSequenceNumber = i
+			}
+
 			// Record Numbers
 			cdAddendumARecordNumber := 1
 			cdAddendumCRecordNumber := 1
@@ -212,7 +220,11 @@ func (cl *CashLetter) build() error {
 	clc.CashLetterItemsCount = cashLetterItemsCount
 	clc.CashLetterTotalAmount = cashLetterTotalAmount
 	clc.CashLetterImagesCount = cashLetterImagesCount
-	clc.ECEInstitutionName = cl.GetHeader().ECEInstitutionRoutingNumber
+	if cl.CashLetterControl.ECEInstitutionName != "" {
+		clc.ECEInstitutionName = cl.CashLetterControl.ECEInstitutionName
+	} else {
+		clc.ECEInstitutionName = cl.GetHeader().ECEInstitutionRoutingNumber
+	}
 	clc.CreditTotalIndicator = creditIndicator
 	cl.CashLetterControl = clc
 	return nil

writer_test.go

@@ -64,14 +64,18 @@ func TestICLWrite(t *testing.T) {
 	cl := NewCashLetter(mockCashLetterHeader())
 	cl.AddBundle(bundle)
 	cl.AddBundle(returnBundle)
-	cl.Create()
+	if err := cl.Create(); err != nil {
+		t.Errorf("%T: %s", err, err)
+	}
 	file.AddCashLetter(cl)
 
 	clTwo := NewCashLetter(mockCashLetterHeader())
 	clTwo.CashLetterHeader.CashLetterID = "A2"
 	clTwo.AddBundle(bundle)
 	clTwo.AddBundle(returnBundle)
-	clTwo.Create()
+	if err := clTwo.Create(); err != nil {
+		t.Errorf("%T: %s", err, err)
+	}
 	file.AddCashLetter(clTwo)
 
 	// Create file
@@ -138,14 +142,18 @@ func TestICLWriteCreditItem(t *testing.T) {
 	cl := NewCashLetter(mockCashLetterHeader())
 	cl.AddCreditItem(ci)
 	cl.AddBundle(bundle)
-	cl.Create()
+	if err := cl.Create(); err != nil {
+		t.Errorf("%T: %s", err, err)
+	}
 	file.AddCashLetter(cl)
 
 	clTwo := NewCashLetter(mockCashLetterHeader())
 	clTwo.CashLetterHeader.CashLetterID = "A2"
 	clTwo.AddBundle(bundle)
 
-	clTwo.Create()
+	if err := clTwo.Create(); err != nil {
+		t.Errorf("%T: %s", err, err)
+	}
 	file.AddCashLetter(clTwo)
 
 	// Create file
@@ -202,7 +210,9 @@ func TestICLWriteRoutingNumber(t *testing.T) {
 	cl := NewCashLetter(mockCashLetterHeader())
 	cl.AddBundle(bundle)
 	cl.AddRoutingNumberSummary(rns)
-	cl.Create()
+	if err := cl.Create(); err != nil {
+		t.Errorf("%T: %s", err, err)
+	}
 	file.AddCashLetter(cl)
 
 	// Create file