refactor: define typescript type for AccountDelete transaction (#1537)

* refactor: define typescript type for AccountDelete transaction

test/models/accountDelete.ts

@@ -0,0 +1,78 @@
+import { ValidationError } from 'xrpl-local/common/errors'
+import { verifyAccountDelete } from './../../src/models/transactions/accountDelete'
+import { assert } from 'chai'
+
+/**
+ * AccountDelete Transaction Verification Testing
+ *
+ * Providing runtime verification testing for each specific transaction type
+ */
+describe('AccountDelete Transaction Verification', function () {
+    
+    it (`verifies valid AccountDelete`, () => {
+        const validAccountDelete = {
+            TransactionType: "AccountDelete",
+            Account: "rWYkbWkCeg8dP6rXALnjgZSjjLyih5NXm",
+            Destination: "rPT1Sjq2YGrBMTttX4GZHjKu9dyfzbpAYe",
+            DestinationTag: 13,
+            Fee: "5000000",
+            Sequence: 2470665,
+            Flags: 2147483648
+        } as any
+        
+        assert.doesNotThrow(() => verifyAccountDelete(validAccountDelete))
+    })
+
+
+    it (`throws w/ missing Destination`, () => {
+        const invalidDestination = {
+            TransactionType: "AccountDelete",
+            Account: "rWYkbWkCeg8dP6rXALnjgZSjjLyih5NXm",
+            Fee: "5000000",
+            Sequence: 2470665,
+            Flags: 2147483648
+        } as any
+
+        assert.throws(
+            () => verifyAccountDelete(invalidDestination),
+            ValidationError,
+            "AccountDelete: missing field Destination"
+        )
+    })
+
+    it (`throws w/ invalid Destination`, () => {
+        const invalidDestination = {
+            TransactionType: "AccountDelete",
+            Account: "rWYkbWkCeg8dP6rXALnjgZSjjLyih5NXm",
+            Destination: 65478965,
+            Fee: "5000000",
+            Sequence: 2470665,
+            Flags: 2147483648
+        } as any
+
+        assert.throws(
+            () => verifyAccountDelete(invalidDestination),
+            ValidationError,
+            "AccountDelete: invalid Destination"
+        )
+    })
+
+    it (`throws w/ invalid DestinationTag`, () => {
+        const invalidDestinationTag = {
+            TransactionType: "AccountDelete",
+            Account: "rWYkbWkCeg8dP6rXALnjgZSjjLyih5NXm",
+            Destination: "rPT1Sjq2YGrBMTttX4GZHjKu9dyfzbpAYe",
+            DestinationTag: "gvftyujnbv",
+            Fee: "5000000",
+            Sequence: 2470665,
+            Flags: 2147483648
+        } as any
+
+        assert.throws(
+            () => verifyAccountDelete(invalidDestinationTag),
+            ValidationError,
+            "AccountDelete: invalid DestinationTag"
+        )
+    })
+
+})