refactor: Define EscrowFinish transaction model (#1531)

refactor: Define EscrowFinish transaction model (#1531)

test/models/escrowFinish.ts

@@ -0,0 +1,75 @@
+import { ValidationError } from 'xrpl-local/common/errors'
+import { verifyEscrowFinish } from './../../src/models/transactions/escrowFinish'
+import { assert } from 'chai'
+
+/**
+ * EscrowFinish Transaction Verification Testing
+ *
+ * Providing runtime verification testing for each specific transaction type
+ */
+describe('EscrowFinish Transaction Verification', function () {
+    let escrow 
+
+    beforeEach(() => {
+        escrow =  {
+            Account: "rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn",
+            TransactionType: "EscrowFinish",
+            Owner: "rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn",
+            OfferSequence: 7,
+            Condition: "A0258020E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855810100",
+            Fulfillment: "A0028000"
+        }
+    })
+    it (`verifies valid EscrowFinish`, () => {                    
+        assert.doesNotThrow(() => verifyEscrowFinish(escrow))
+    })
+
+    it (`verifies valid EscrowFinish w/o optional`, () => {
+        delete escrow.Condition
+        delete escrow.Fulfillment
+                    
+        assert.doesNotThrow(() => verifyEscrowFinish(escrow))
+    })
+
+
+    it (`throws w/ invalid Owner`, () => {
+        escrow.Owner = 0x15415253
+ 
+
+        assert.throws(
+            () => verifyEscrowFinish(escrow),
+            ValidationError,
+            "EscrowFinish: Owner must be a string"
+        )
+    })
+
+    it (`throws w/ invalid OfferSequence`, () => {
+        escrow.OfferSequence = "10"
+
+        assert.throws(
+            () => verifyEscrowFinish(escrow),
+            ValidationError,
+            "EscrowFinish: OfferSequence must be a number"
+        )
+    })
+
+    it (`throws w/ invalid Condition`, () => {
+        escrow.Condition = 10
+
+        assert.throws(
+            () => verifyEscrowFinish(escrow),
+            ValidationError,
+            "EscrowFinish: Condition must be a string"
+        )
+    })
+
+    it (`throws w/ invalid Fulfillment`, () => {
+        escrow.Fulfillment = 0x142341
+
+        assert.throws(
+            () => verifyEscrowFinish(escrow),
+            ValidationError,
+            "EscrowFinish: Fulfillment must be a string"
+        )
+    })
+})