Display fiat on Network Fees popup. Display subcent amounts as '< 0.01'.

src/js/controllers/confirm.js

@@ -426,6 +426,8 @@ angular.module('copayApp.controllers').controller('confirmController', function(
 
 
   function showSendMaxWarning(wallet, sendMaxInfo) {
+    var feeAlternative,
+      msg;
 
     function verifyExcludedUtxos() {
       var warningMsg = [];
@@ -443,9 +445,18 @@ angular.module('copayApp.controllers').controller('confirmController', function(
       return warningMsg.join('\n');
     };
 
-    var msg = gettextCatalog.getString("{{fee}} will be deducted for bitcoin networking fees.", {
-      fee: txFormatService.formatAmountStr(wallet.coin, sendMaxInfo.fee)
-    });
+    feeAlternative = txFormatService.formatAlternativeStr(wallet.coin, sendMaxInfo.fee);
+    if (feeAlternative) {
+      msg = gettextCatalog.getString("{{feeAlternative}} will be deducted for bitcoin networking fees ({{fee}}).", {
+        fee: txFormatService.formatAmountStr(wallet.coin, sendMaxInfo.fee),
+        feeAlternative: feeAlternative
+      });
+    } else {
+      gettextCatalog.getString("{{fee}} will be deducted for bitcoin networking fees).", {
+        fee: txFormatService.formatAmountStr(wallet.coin, sendMaxInfo.fee)
+      });
+    }
+
     var warningMsg = verifyExcludedUtxos();
 
     if (!lodash.isEmpty(warningMsg))

src/js/services/txFormatService.js

@@ -72,11 +72,19 @@ angular.module('copayApp.services').factory('txFormatService', function($filter,
     var config = configService.getSync().wallet.settings;
 
     var val = function() {
-      var v1 = parseFloat((rateService.toFiat(satoshis, config.alternativeIsoCode, coin)).toFixed(2));
-      v1 = $filter('formatFiatAmount')(v1);
+      var fiatAmount = rateService.toFiat(satoshis, config.alternativeIsoCode, coin);
+      var roundedStr = fiatAmount.toFixed(2);
+      var roundedNum = parseFloat(roundedStr);
+      var subcent = roundedNum === 0 && fiatAmount > 0;
+      var lessThanPrefix = '';
+      if (subcent) {
+        roundedNum = 0.01;
+        lessThanPrefix = '< '
+      }
+      var v1 = $filter('formatFiatAmount')(roundedNum);
       if (!v1) return null;
 
-      return v1 + ' ' + config.alternativeIsoCode;
+      return lessThanPrefix + v1 + ' ' + config.alternativeIsoCode;
     };
 
     // Async version

src/js/services/txFormatService.spec.js

@@ -0,0 +1,71 @@
+describe('txFormatService', function(){
+  var configServiceMock,
+    rateServiceMock,
+    txFormatService;
+
+  beforeEach(function(){
+    module('ngLodash');
+    module('bwcModule');
+    module('copayApp.filters');
+    module('copayApp.services');
+
+    configServiceMock = {
+      getSync: jasmine.createSpy()
+    };
+
+    rateServiceMock = {
+      isAvailable: jasmine.createSpy(),
+      toFiat: jasmine.createSpy()
+    };
+
+    module(function($provide) {
+      $provide.value('configService', configServiceMock);
+      //$provide.value('$log', log); // Handy for debugging test failures
+      $provide.value('rateService', rateServiceMock);
+    });
+
+    inject(function($injector){
+      txFormatService = $injector.get('txFormatService');
+    });
+
+  });
+
+  it('formatAlternativeStr 0.49 cents.', function() {
+    
+    configServiceMock.getSync.and.returnValue({
+      wallet: {
+        settings: {
+          alternativeIsoCode: 'USD'
+        }
+      }
+    });
+
+    rateServiceMock.isAvailable.and.returnValue(true);
+    rateServiceMock.toFiat.and.returnValue(0.00499);
+    
+    var formatted = txFormatService.formatAlternativeStr('bch', 123);
+
+    expect(formatted).toBe('< 0.01 USD');
+    //expect(formatted).toBe('0.00 USD');
+
+  });
+
+  it('formatAlternativeStr 0.5 cents.', function() {
+
+    configServiceMock.getSync.and.returnValue({
+      wallet: {
+        settings: {
+          alternativeIsoCode: 'USD'
+        }
+      }
+    });
+
+    rateServiceMock.isAvailable.and.returnValue(true);
+    rateServiceMock.toFiat.and.returnValue(0.005);
+    
+    var formatted = txFormatService.formatAlternativeStr('bch', 123);
+
+    expect(formatted).toBe('0.01 USD');
+  });
+
+});