Create tests for DayLimit

contracts/test-helpers/DayLimitMock.sol

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+pragma solidity ^0.4.4;
+import "../DayLimit.sol";
+
+contract DayLimitMock is DayLimit {
+  uint public totalSpending;
+
+  function DayLimitMock(uint _value, address[] _owners, uint _required) DayLimit(_value) Shareable(_owners, _required) {
+    totalSpending = 0;
+  }
+
+  function attemptSpend(uint _value) external limitedDaily(_value) {
+    totalSpending += _value;
+  }
+
+}

test/DayLimit.js

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+contract('DayLimit', function(accounts) {
+
+  it('should construct with the passed daily limit', async function() {
+    let initLimit = 10;
+    let dayLimit = await DayLimitMock.new(initLimit, accounts, 2);
+    let dailyLimit = await dayLimit.dailyLimit();
+    assert.equal(initLimit, dailyLimit);
+  });
+
+  it('should be able to spend if daily limit is not reached', async function() {
+    let limit = 10;
+    let dayLimit = await DayLimitMock.new(limit, accounts, 1);
+
+    await dayLimit.attemptSpend(8);
+    let spentToday = await dayLimit.spentToday();
+    assert.equal(spentToday, 8);
+
+    await dayLimit.attemptSpend(2);
+    spentToday = await dayLimit.spentToday();
+    assert.equal(spentToday, 10);
+  });
+
+  it('should prevent spending if daily limit is reached', async function() {
+    let limit = 10;
+    let dayLimit = await DayLimitMock.new(limit, accounts, 1);
+
+    await dayLimit.attemptSpend(8);
+    let spentToday = await dayLimit.spentToday();
+    assert.equal(spentToday, 8);
+
+    await dayLimit.attemptSpend(3);
+    spentToday = await dayLimit.spentToday();
+    assert.equal(spentToday, 8);
+  });
+
+  it('should allow spending if daily limit is reached and then set higher', async function() {
+    let limit = 10;
+    let dayLimit = await DayLimitMock.new(limit, accounts, 1);
+
+    await dayLimit.attemptSpend(8);
+    let spentToday = await dayLimit.spentToday();
+    assert.equal(spentToday, 8);
+
+    await dayLimit.attemptSpend(3);
+    spentToday = await dayLimit.spentToday();
+    assert.equal(spentToday, 8);
+
+    await dayLimit.setDailyLimit(15);
+    await dayLimit.attemptSpend(3);
+    spentToday = await dayLimit.spentToday();
+    assert.equal(spentToday, 11);
+  });
+
+  it('should allow spending if daily limit is reached and then amount spent is reset', async function() {
+    let limit = 10;
+    let dayLimit = await DayLimitMock.new(limit, accounts, 1);
+
+    await dayLimit.attemptSpend(8);
+    let spentToday = await dayLimit.spentToday();
+    assert.equal(spentToday, 8);
+
+    await dayLimit.attemptSpend(3);
+    spentToday = await dayLimit.spentToday();
+    assert.equal(spentToday, 8);
+
+    await dayLimit.resetSpentToday(15);
+    await dayLimit.attemptSpend(3);
+    spentToday = await dayLimit.spentToday();
+    assert.equal(spentToday, 3);
+  });
+
+});