Log output and error messages

Running ./sample23 in the sample directory will generate the following output

 TestApe test executable
 Unit testing for embedded software - http://testape.com

 Initializing ./sample23

 error e001: sample23.c:12: failed value of PI. Expected 3.140000 (3.14), was 3.141593.

 Terminating ./sample23 - exitcode 1 
   0 passed, 1 failed (1 errors), 0 skipped

The detailed log report is disabled by default, but it can be enabled from commandline with -ol option. In the log each log statement is prefixed with the tag TestApe and optionally the current test and/or error identifier as shown below.

 ./sample23 -ide -idt -ol
which will produce the following output instead

          testape: TestApe test executable
          testape: Unit testing for embedded software - http://testape.com
          testape: 
          testape: Initializing ./sample23
          testape:   -ol ( errors:stderr, summary:stdout, log:stdout )
          testape:   -ide ( error identifiers shown in log )
          testape:   -idt ( test identifiers shown in log )
          testape: 
t000 e000 testape: Executing test testmain
t000 e000 testape: 
t000 e000 testape:   PASSED verify PI
t000 e000 testape:     expected .......... 3 (PI)
t000 e000 testape:     actual ............ 3
t000 e000 testape:     
t000 e001 testape:   FAILED verify PI
error e001: sample23.c:12: failed value of PI. Expected 3.140000 (3.14), was 3.141593.
t000 e001 testape:     expected .......... 3.140000 (3.14)
t000 e001 testape:     actual ............ 3.141593
t000 e001 testape:     
t000 e001 testape:   PASSED verify PI
t000 e001 testape:     expected .......... 3.141593 (3.1415926)
t000 e001 testape:     actual ............ 3.141593
t000 e001 testape:     
t000 e001 testape: FAILED test testmain (1 error)
t000 e001 testape:   t000 e001 Verify floating point in test testmain
t000 e001 testape:   
          testape: 
          testape: Terminating ./sample23 - exitcode 1
          testape:   0 passed, 1 failed (1 errors), 0 skipped

Every error detected and every test execution is assigned a sequential identifier. Error identifiers are 3 digits shown prefixed by e, e.g. e001. Test identifiers are shown prefixed by t, e.g. t001.

These identifiers can be used from the commandline to limit the amount of test to run.

When an error is detected TestApe print an error message to stderr and add information about the error to the log.

The log will contain a line for the actual and expected value. Only 8 values will be shown on each line, so when validating file content, strings, structs and arrays, several lines may be shown. Differences between actual and expected are indicated with the ^ sign as shown below.

testape:   FAILED verify s
testape:     expected .......... [000] 4e 4f 54 20             'NOT '
testape:     actual ............ [000] 57 45 52 00             'WER.'
testape:                               ^^ ^^ ^^ ^^              ^^^^

testape

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