add test cases for coin selection

src/types.ts

@@ -559,3 +559,10 @@ export interface CheckRepurchaseResult {
 export interface Notifier {
   notify(): void;
 }
+
+/**
+ * For terseness.
+ */
+export function mkAmount(value: number, fraction: number, currency: string): AmountJson {
+  return {value, fraction, currency};
+}

src/wallet-test.ts

@@ -0,0 +1,193 @@
+import {test, TestLib} from "testlib/talertest";
+import {mkAmount} from "./types";
+import * as wallet from "./wallet";
+
+
+test("coin selection 1", (t: TestLib) => {
+  let cds: any = [];
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 5, "EUR"),
+    },
+  });
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 0, "EUR"),
+    },
+  });
+
+  let res = wallet.selectCoins(cds, mkAmount(2,0,"EUR"), mkAmount(0,5,"EUR"));
+  if (!res) {
+    t.fail();
+    return;
+  }
+  t.assert(res.length == 2);
+  t.pass();
+});
+
+
+test("coin selection 2", (t: TestLib) => {
+  let cds: any = [];
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 5, "EUR"),
+    },
+  });
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 0, "EUR"),
+    },
+  });
+  // Merchant covers the fee, this one shouldn't be used
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 0, "EUR"),
+    },
+  });
+
+  let res = wallet.selectCoins(cds, mkAmount(2,0,"EUR"), mkAmount(0,5,"EUR"));
+  if (!res) {
+    t.fail();
+    return;
+  }
+  t.assert(res.length == 2);
+  t.pass();
+});
+
+
+test("coin selection 2", (t: TestLib) => {
+  let cds: any = [];
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 5, "EUR"),
+    },
+  });
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 0, "EUR"),
+    },
+  });
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 0, "EUR"),
+    },
+  });
+
+  let res = wallet.selectCoins(cds, mkAmount(2,0,"EUR"), mkAmount(0,2,"EUR"));
+  if (!res) {
+    t.fail();
+    return;
+  }
+  t.assert(res.length == 2);
+  t.pass();
+});
+
+
+
+test("coin selection 3", (t: TestLib) => {
+  let cds: any = [];
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 5, "EUR"),
+    },
+  });
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 0, "EUR"),
+    },
+  });
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 5, "EUR"),
+    },
+  });
+
+  let res = wallet.selectCoins(cds, mkAmount(2,0,"EUR"), mkAmount(0,2,"EUR"));
+  if (!res) {
+    t.fail();
+    return;
+  }
+  t.assert(res.length == 3);
+  t.pass();
+});
+
+
+test("coin selection 3", (t: TestLib) => {
+  let cds: any = [];
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 5, "EUR"),
+    },
+  });
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 0, "EUR"),
+    },
+  });
+  cds.push({
+    coin: {
+      currentAmount: mkAmount(1, 0, "EUR"),
+    },
+    denom: {
+      value: mkAmount(1, 0, "EUR"),
+      fee_deposit: mkAmount(0, 5, "EUR"),
+    },
+  });
+
+  let res = wallet.selectCoins(cds, mkAmount(4,0,"EUR"), mkAmount(0,2,"EUR"));
+  t.assert(!res);
+  t.pass();
+
+});

tsconfig.json

@@ -28,6 +28,7 @@
     "src/types-test.ts",
     "decl/chrome/chrome.d.ts",
     "src/cryptoWorker.ts",
+    "src/wallet-test.ts",
     "src/db.ts",
     "src/emscriptif.ts",
     "src/helpers.ts",