We have a NextInterestDate property on a rhinomock that we initially set to 31/03/2000. This property is accessed and this date is used in the processing of interest calculations for March. Once the March processing is complete the property needs to be updated to be the next chronological interest date which is 30/04/2000.
The next time around the loop we want the mock to return the April end date when the NextInterestDate is accessed on the mock. In short a new date is recalculated each time around the loop and the property on the mock is reassigned with the new date.
This means that the date on the mock must be updated each time around the loop.
What we are seeing however is that the date remains at 31/03/2000 rather than be updated correctly.
We are relatively new to RhinoMocks but we much prefer it to NMocks, albeit there seems to be a steep learning curve.
To solve this problem the previous developer used NMock and used a clonable class that she utilised NMocks ...Return.CloneOF which allowed the mock to be able to update the mock and supply the new value.
We just can't seem to figure out the correct syntax / or a way to achieve this.
Many thanks in advance Regards Colin
You can achieve that with .WhenCalled method. This might seem dodgy, but does exactly the thing you want to:
var expectedDates = new[]
{
new DateTime(2000, 3, 31),
new DateTime(2000, 4, 30),
new DateTime(2000, 5, 31),
};
var invocationsCount = 0;
service.Expect(s => s.NextInterestDate)
.WhenCalled(m => m.ReturnValue = expectedDates[invocationNumber++])
.Return(default(DateTime));
What code above does is simply takes next element from expectedDates array with each successive invocation. The strange call to Return(default(DateTime)) at the end must be there (otherwise Rhino will complain). You shouldn't worry tho - fake return value is ignored when we already specify one with WhenCalled.
Note that you need to be careful with code like one above (incrementing counters, arrays - all that in mock setup). Readability is not the greatest, so having proper variables/test method naming is crucial.
Related
I'm making a time-spending tracker based on the work I do every hour of the day.
Now, suppose I have 28 types of work listed in my tracker (which I also have to increase from time to time), and I have about 8 significance values that I have decided to relate to these 28 types of work, predefined.
I want that, as soon as I enter a type of work in cell 1 - I want the adjacent cell 2 to get automatically populated with a significance value (from a range of 8 values) that is pre-definitely set by me.
Every time I input a new or old occurrence of a type of work, the adjacent cell should automatically get matched with its relevant significance value & automatically get populated in real-time.
I know how to do it using IF, IFS, and IF_OR conditions, but I feel that based on the ever-expanding types of work & significance values, the above formulas will be very big, complicated, and repetitive in the future. I feel there's a more efficient way to achieve it. Also, I don't want it to be selected from a drop-down list.
Guys, please help me out with the most efficient way to handle this. TUIA :)
Also, I've added a snapshot and a sample sheet describing the problem.
Sample sheet
XLOOKUP() may work. Try-
=XLOOKUP(D2,A2:A,B2:B)
Or FILTER() function like-
=FILTER(B2:B,A2:A=D2)
You can use this formula for a whole column:
=INDEX(IFERROR(VLOOKUP(C14:C,A2:B9,2,0)))
Adapt the ranges to your actual tables in order to include in the second argument all the potential values and their significances
This is the formula, that worked for me (for anybody's reference):
I created another reference sheet, stating the types of work & their significance. From that sheet, I'm using either vlookup, filter, xlookup.Using gforms for inputting my data.
=ARRAYFORMULA(IFS(ROW(D:D)=1,"Significance",A:A="","",TRUE,VLOOKUP(D:D,Reference!$A:$B,2,0)))
I am pretty new to coding and unit tests.
I am writing a unit test for a method converts string to date.
What do I assert for a positive test
it goes like below
String s1 = "11/11/2018";
Date returnedValue = Class.ConvertToDate(s1);
assert(????);
I am not sure what methods the Date class in your code snippet provides, so I will assume that it has the following methods: getDayNrInMonth which returns the day as an int value starting from 1, getMonthNrInYear which returns the month as an int starting from 1, and getYearNr which returns the year as an int value (lets just ignore that there are different calendarian systems, and that is all for the Gregorian calendar).
The important question you would have to answer first is, what the goal of the test would be. There are several possible goals that you could test for - which means that you probably should end up with writing several tests. Let's assume you want to test that the year part was converted correctly. Then, the assertion could look like follows:
assert(returnedValue.getYearNr() == 2018);
Most likely, however, your test framework will provide something better for you here, possibly a function assertEquals, which you could then use as follows:
assertEquals(returnedValue.getYearNr(), 2018);
If in contrast you want to check that the month is converted correctly, you will immediately realize that the test example you have chosen is not ideal:
assertEquals(returnedValue.getMonthNrInYear(), 11);
As in your example day and month both are 11, this test would not be very reliable. So to test the correct conversion of the day and the month, the input strings should be chosen to have distinguishable values for the two.
While you move on with learning to program and to test, you will find that there are many more aspects that could be considered. The links in the comments can help you. However, hopefully the above points support you in taking the next steps.
The answers in topics with similar titles haven't given me much of a resolution to my particular problem, but possibly I am not asking the right question. It might help knowing I'm an absolute noob when it comes to spreadsheets, so finding my way around is next to nil.
Currently I can set a basic function in the first cell A1 =ROW()
Simple right? Well now here comes the complication. If I click on the bottom right of the cell and start dragging I can then apply that very same function to a whole range of cells. Let's say I apply it from A1:A10. Every cell within this group now has the same function.
Hooray! We did it, right? I applied a function to a range of cells each with their own output. But wait, if I then go back to the original cell and change its formula none of the other cells change with it. GRRRRR!!!!
There are a couple of fixes I've come up with but don't necessarily know how to implement. The first is to have every cell link back to the original cell and reference its function. This would be useful if I wanted to randomly scatter dependent cells about the document. The other would be much more useful in an orderly group where you know the exact dimensions by specifying in the original cell the size of the array you want to apply the function to.
With that said, let me hear your thoughts.
The closest I've come to an answer is to use FORMULA() which returns the formula used by a cell as text. Unfortunately all answers on evaluating the text resort to scripting. How strange! I thought something like this would be common. Might as well get to scripting.
Hold on, I may have spoke too soon. An array can be made with =MUNIT(), but it's only square. Drats!
Ok... I'm hoping the zebra stripes will eventually become its own answer unless someone else beats me to it. So a simple array can be made with ={1,2;3,4} where commas separate values by column and semicolons for values by row except to generate it you have to press Control+Shift+Enter (because reasons?). I'm thinking now that I'll need to have functions that can generate lists of values based on a single function for each row, and pray that it'll work. So, back to looking. (Wow this is taking forever)
The way I was hypothesizing can't even generate a 1x1, e.g., ={ROW()} returns Err:512 which is a formula overflow.
Alright, in summary so far I've narrowed down the two options,
1) link every cell to the original formula
2) populate an array with a single formula
each with their own incomplete answer,
a) use FORMULA() to return the formula of a cell as text
b) create a hypothetical array like so ={LIST_OF_VALUES()}
These both require a strange form of the nonexistent EVALUATE() function to 'function' correctly. Isn't that fun?
Google Sheets handles case b by allowing ={ROW()}Control+Shift+Enter to generate =ArrayFormula({ROW()}). Working with the general case of any sized array being filled with a single function doesn't exist in the world of spreadsheets it seems. That's very saddening because I can't think of a much better tool for what I want to do. Copy paste it is until I need to use macros.
Depending on your specific use case, creating a user-defined function may help:
use the Basic IDE to create your function;
apply it to any cells on any sheet;
modifying the Basic code will affect all cells where the function is used.
I've elaborated the steps in an answer on superuser.
Sure, you could write some complex code to update functions, but wouldn't the easy way be just to drag it to the same range of cells the same way you did before? It should properly overwrite the existing code in there, and if it doesn't, you can just as easily delete the outdated code and drag the new code in.
Probably the best approach is to simply drag the amended formula over the range of cells (as advised by OldBunny2800). This is less error prone and easier to maintain than a custom macro.
Another option would be to use an array function. Then you only have to edit the function once, and the same edit will be automatically applied to the whole range of cells in that array function.
I have a model that has a couple million objects. Each object represents a call made/received by a company.
To simplify things, let's say this model, Call, has these fields:
calldate, context, channel.
My goal is to know the average # of calls made and received during each hour of the day of the month (load by hour). The catch is: I need to find this for port1 and port2 separately.
As of now, my code works fine, except that it takes around 1 whole minute to give me the result for a range of 4 months and I it seems extremely inefficient.
I've done some simple profiling and discovered that the extend is taking around 99% of the processing time:
queryset = Call.objects.filter(calldate__gte='SOME_DATE')
port1, port2 = [],[]
port1.extend(queryset.filter(context__icontains="e1-1"))
port2.extend(queryset.filter(context__icontains="e1-2"))
channels_in_port1 = ["Port/%d-2" % x for x in range(1,32)]
channels_in_port2 = ["Port/%d-2" % x for x in range(32,63)]
for i in channels_in_port1:
port1.extend(queryset.filter(channel__icontains=i))
for i in channels_in_port2:
port2.extend(queryset.filter(channel__icontains=i))
port1 and port2 have around 150k objects combined now.
As soon as I have all calls for port1 and port2, I'm good to go. The rest of the code is basically some for loops for port1 and port2 that sums up and takes the average of calls according to the hour/day/month. Trivial stuff.
I tried to avoid using any "extend" by using itertools.chain and chaining the querysets instead. However, that made the processing time shift to the part where I do the trivial for loops to calculate the load by hour.
Any alternatives? Better ways to filter the queryset?
Thanks very much!!
Have you considered using django's aggregate functions? http://docs.djangoproject.com/en/dev/topics/db/aggregation/
I presume your problem is with the second set of extends, ie those within the for loops, rather than the first. (The first is completely unnecessary, in any case: rather than defining an empty list up front and extending it, you can just do port1 = list(queryset.filter(context__icontains="e1-1")).)
Anyway, to summarize what I think you are trying to do: you want to get all Call objects for a certain date, in two blocks depending on the value for channel: one where it contains values from 0 to 31, and one with values between 32 and 62.
It seems like you could do this with just two queries, without any extending at all:
port1 = queryset.filter(channel__range=["Port/1-2", "Port/31-2"])
port2 = queryset.filter(channel__range=["Port/1-32", "Port/31-62"])
Does that not do what you want?
Edit in response to comment but that's then just two queries which you can extend, or concatenate. The problem with your code as posted is that you are doing 31 queries and extend operations for each port, which is bound to be expensive. If you just do one each, plus one extend/concat, that will be much cheaper.
I've been trying to solve this problem for quite sometime but I am having trouble with it.
Let's say on a trigger, you receive values.
First trigger: You get 1
Second trigger: You get 1, 2
Third trigger: You get 1, 2, 3
So, I store 1.
For 2nd trigger, I store 2 since 1 already exist.
For 3rd trigger, I store 3 since 1,2 already exist
so in total I have stored 1,2,3
As you can see, we can easily check for new values, if old != new.
Here's come the problem:
Fourth trigger: You get 1, 2, 4
For 4th trigger, I store 1, 2 because it exists
but how do I check against 3 and remove 3 from store and check if 4 is new?
If you are having problems understanding this, feel free to clarify. Thanks!
Use a std::set<int> container. When a trigger arrives, clear it an insert all the values from trigger. This should be ok if you work with just a few numbers (about ten or so). With more, a little bit more sophisticated approach might be required.
Hard to tell what you're asking exactly, but see std::set data structure if your main problem is trying to maintain a set of unique numbers and efficiently check for existence in the set.
Your logic changed between 1,2,3 and 1,2,4
(only stored 3 on former, but stored 1,2,4 on latter)
In that case, ignore data recv'd that already exists, only storing new data, unless some old data was not sent in which case you'll create a new set of data to store.
But, I'm guessing that's not what you had in mind at all :)
edit
I see it's been edited now, so my answer is invalid
edit-2
the fastest way is to drop all stored data on each iteration as comparisons will take as long (if not longer) than a complete save of sent data.
Your approach sounds like it is better served by using some basic set theory. A couple of answers already point you to STL sets for that matter. With that, you'll need to iterate through the reported values to test for membership in the set.
However, is there an opportunity to affect what is reported with each "trigger"? For example, if this is something like a select poll, you could just put whatever it is that you're polling into a different state so that it is not reported as ready in subsequent triggers.