sasjs/core
1
0
Fork 0
mirror of https://github.com/sasjs/core.git synced 2026-01-08 18:00:06 +00:00
Code Issues Projects Releases Wiki Activity

chore(docs): assertscope

Browse Source
This commit is contained in:
munja
2022-01-19 10:55:52 +01:00
parent e3991c46e2
commit 75f712a305
2 changed files with 53 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
base/mp_assertscope.sas
View File

@@ -1,15 +1,15 @@
/** /**
@file @file
@brief Used to capture scope leakage of macro variables @brief Used to capture scope leakage of macro variables
@details A common 'difficult to detect' bug in macros is where a nested @details
macro over-writes variables in a higher level macro.
A common 'difficult to detect' bug in macros is where a nested macro
over-writes variables in a higher level macro.
This assertion takes a snapshot of the macro variables before and after This assertion takes a snapshot of the macro variables before and after
a macro invocation. This makes it easy to detect whether any macro a macro invocation. Differences are captured in the `&outds` table. This
variables were modified or changed. makes it easy to detect whether any macro variables were modified or
changed.
Currently, the macro only checks for global scope variables. In the future
it may be extended to work at multiple levels of nesting.
If you would like this feature, feel free to contribute / raise an issue / If you would like this feature, feel free to contribute / raise an issue /
engage the SASjs team directly. engage the SASjs team directly.
@@ -24,6 +24,9 @@
desc=Checking macro variables against previous snapshot desc=Checking macro variables against previous snapshot
) )
This macro is designed to work alongside `sasjs test` - for more information
about this facility, visit [cli.sasjs.io/test](https://cli.sasjs.io/test).
@param [in] action (SNAPSHOT) The action to take. Valid values: @param [in] action (SNAPSHOT) The action to take. Valid values:
@li SNAPSHOT - take a copy of the current macro variables @li SNAPSHOT - take a copy of the current macro variables
@li COMPARE - compare the current macro variables against previous values @li COMPARE - compare the current macro variables against previous values

41
tests/crossplatform/mp_stackdiffs.test.sas Normal file
View File

@@ -0,0 +1,41 @@
/**
@file
@brief Testing mp_storediffs macro
<h4> SAS Macros </h4>
@li mp_assert.sas
@li mp_assertcolvals.sas
@li mp_assertdsobs.sas
@li mp_stackdiffs.sas
@li mp_storediffs.sas
**/
/* first, make some data */
data work.orig work.deleted work.changed work.appended;
set sashelp.electric;
if _n_ le 10 then do;
output work.orig work.deleted;
end;
else if _n_ le 20 then do;
output work.orig;
age=99;
output work.changed;
end;
else if _n_ le 30 then do;
year=_n_;
output work.appended;
end;
else stop;
run;
%mp_storediffs(sashelp.electric,work.orig,CUSTOMER YEAR
,delds=work.deleted
,modds=work.changed
,appds=work.appended
,outds=work.final
,mdebug=1
)
/* now, stack it back */