Test of the mf_getvarcount macro

This program generates local test data containing a mix of numeric and character variables. It then executes a series of assertions (via the %mp_assert macro) to validate that the %mf_getvarcount macro correctly counts variables, globally and by type (numeric or character filter).

Data Analysis

Type : CREATION_INTERNE

The test tables (work.all, work.nums, work.chars) are generated by a Data Step at the beginning of the script.

1 Code Block

DATA STEP Data

Explanation :
Creation of test tables in the WORK library with defined variable structures (mixed, numeric only, character only).

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1	DATA work.all work.nums(keep=num1 num2) work.chars(keep=char1 char2);
2	LENGTH num1 num2 8 char1 char2 char3 $4;
3	call missing (of _all_);
4	OUTPUT;
5	RUN;

2 Code Block

MACRO

Explanation :
Sequence of unit tests. Uses %mp_assertscope to check the cleanliness of the macro environment, and %mp_assert to validate the returns of the %mf_getvarcount function according to different filtering criteria.

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1	%mp_assertscope(SNAPSHOT)
2	%put scope check:%mf_getvarcount(work.all);
3	%mp_assertscope(COMPARE)
4
5	%mp_assert(
6	iftrue=(%mf_getvarcount(work.all)=5),
7	desc=%str(Checking for mixed vars),
8	outds=work.test_results
9	)
10
11	%mp_assert(
12	iftrue=(%mf_getvarcount(work.all,typefilter=C)=3),
13	desc=%str(Checking for char in mixed vars),
14	outds=work.test_results
15	)
16	/* ... suite des assertions ... */

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