Astro-FITS-Header

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my $value2 = $keywords2{COMMENT};
is(ref $value2, "ARRAY");

# Test comment parsing in keyword setting
$href->{NUM} = "3 / test";
is($href->{NUM},3, "Test value from auto-parse");
is($href->{NUM_COMMENT},'test', "Test comment from auto-parse");

$href->{SLASHSTR} = "foo\\/bar / value is 'foo/bar'";
is($href->{SLASHSTR},'foo/bar', "Test value from complex auto-parse");
is($href->{SLASHSTR_COMMENT},'value is \'foo/bar\'', "Test comment from complex auto-parse");

# test HISTORY handling
$keywords{HISTORY} = "foo";
$keywords{HISTORY} .= "bar";
ok($keywords{HISTORY} eq <<FOO
foo
bar
FOO
    );

# Test handling of subheaders.
my ($header3, @diff3) = Astro::FITS::Header->new(Cards => [
    'KEY1    =                    1 / Example header                                 ',
    'KEY2    =                    2 / Example header                                 ',
])->merge_primary(Astro::FITS::Header->new(Cards => [
    'KEY1    =                    1 / Example header                                 ',
    'KEY2    =                    3 / Example header                                 ',
]));
$header3->subhdrs(@diff3);
tie my %keywords3, 'Astro::FITS::Header', $header3, tiereturnsref => 1;
is_deeply(\%keywords3, {
    'KEY1' => '1',
    'SUBHEADERS' => [{'KEY2' => '2'}, {'KEY2' => '3'}],
}, 'Tied hash with subheaders');
%keywords3 = ();
is_deeply(\%keywords3, {}, 'Cleared tied hash is empty');
$keywords3{'KEY3'} = 4;
is_deeply(\%keywords3, {
    'KEY3' => 4,
}, 'Cleared tied hash with new key');

# principal of least surprise.... you should get back what you put in!
#$href->{REVERSE} = "foo / bar";
#is($href->{REVERSE}, "foo / bar");

exit;

__DATA__
SIMPLE  =                    T / file does conform to FITS standard             
BITPIX  =                  -32 / number of bits per data pixel                  
NAXIS   =                    3 / number of data axes                            
NAXIS1  =                   25 / length of data axis 1                          
NAXIS2  =                   36 / length of data axis 2                          
NAXIS3  =                  252 / length of data axis 3                          
EXTEND  =                    T / FITS dataset may contain extensions            
COMMENT   FITS (Flexible Image Transport System) format defined in Astronomy and
COMMENT   Astrophysics Supplement Series v44/p363, v44/p371, v73/p359, v73/p365.
COMMENT   Contact the NASA Science Office of Standards and Technology for the   
COMMENT   FITS Definition document #100 and other FITS information.             
CRVAL1  = -0.07249999791383749 / Axis 1 reference value                         
CRPIX1  =                 12.5 / Axis 1 pixel value                             
CTYPE1  = 'a1      '           / LINEAR                                         
CRVAL2  = -0.07249999791383743 / Axis 2 reference value                         
CRPIX2  =                 18.0 / Axis 2 pixel value                             
CTYPE2  = 'a2      '           / LINEAR                                         
CRVAL3  =  1.27557086671004E-6 / Axis 3 reference value                         
CRPIX3  =                126.0 / Axis 3 pixel value                             
CTYPE3  = 'a3      '           / LAMBDA                                         
OBJECT  = 'galaxy  '           / Title of the dataset                           
DATE    = '2000-12-13T22:44:53' / file creation date (YYYY-MM-DDThh:mm:ss UTC)  
ORIGIN  = 'NOAO-IRAF FITS Image Kernel July 1999' / FITS file originator        
BSCALE  =                  1.0 / True_value = BSCALE * FITS_value + BZERO       
BZERO   =                  0.0 / True_value = BSCALE * FITS_value + BZERO       
HDUCLAS1= 'NDF     '           / Starlink NDF (hierarchical n-dim format)       
HDUCLAS2= 'DATA    '           / Array component subclass                       
IRAF-TLM= '23:07:26 (27/02/2000)' / Time of last modification                   
TELESCOP= 'UKIRT, Mauna Kea, HI' / Telescope name                               
INSTRUME= 'CGS4    '           / Instrument                                     
OBSERVER= 'SMIRF   '           / Observer name(s)                               
OBSREF  = '?       '           / Observer reference                             
DETECTOR= 'fpa046  '           / Detector array used                            
OBSTYPE = 'OBJECT  '           / Type of observation                            
INTTYPE = 'STARE+NDR'          / Type of integration                            
MODE    = 'ND_STARE'           / Observing mode                                 
GRPNUM  =                    0 / Number of observation group                    
RUN     =                   54 / Number of run                                  
EXPOSED =                  180 / Total exposure time for integration            
OBJCLASS=                    0 / Class of observed object                       
CD1_1   = 0.144999980926513672 / Axis rotation and scaling matrix               
CD1_2   =                  0.0 / Axis rotation and scaling matrix               
CD1_3   =                  0.0 / Axis rotation and scaling matrix               
CD2_1   =                  0.0 / Axis rotation and scaling matrix               
CD2_2   = 0.144999980926513672 / Axis rotation and scaling matrix               
CD2_3   =                  0.0 / Axis rotation and scaling matrix               
CD3_1   =                  0.0 / Axis rotation and scaling matrix               
CD3_2   =                  0.0 / Axis rotation and scaling matrix               
CD3_3   = 2.07933226192836E-10 / Axis rotation and scaling matrix               
MEANRA  = 10.34629999999999939 / Object RA at equinox (hrs)                     
MEANDEC =  20.1186000000000007 / Object Dec at equinox (deg)                    
RABASE  = 10.34629999999999939 / Offset zero-point RA at equinox (hrs)          
DECBASE =  20.1186000000000007 / Offset zero-point Dec at equinox (deg)         
RAOFF   =                    0 / Offset RA at equinox (arcsec)                  
DECOFF  =                    0 / Offset Dec at equinox (arcsec)                 
DROWS   =                  178 / No of det. in readout row                      
DCOLUMNS=                  256 / No of det. in readout column                   
DEPERDN =                    6 / Electrons per data number                      
CLOCK0  = -6.20000000000000018 / ALICE CLOCK0 voltage                           
CLOCK1  =                   -3 / ALICE CLOCK1 voltage                           
CLOCK2  =                 -7.5 / ALICE CLOCK2 voltage                           
CLOCK3  = -2.79999999999999982 / ALICE CLOCK3 voltage                           
CLOCK4  =                   -6 / ALICE CLOCK4 voltage                           
CLOCK5  =                   -2 / ALICE CLOCK5 voltage                           
CLOCK6  =                 -7.5 / ALICE CLOCK6 voltage                           
VSLEW   =                    4 / ALICE VSLEW voltage                            
VDET    = -3.02000000000000002 / ALICE VDET voltage                             
DET_BIAS=  0.57999999999999996 / ALICE DET_BIAS voltage                         
VDDUC   = -3.60000000000000009 / ALICE VDDUC voltage                            
VDETGATE=                 -4.5 / ALICE VDETGATE voltage                         
VGG_A   = -1.60000000000000009 / ALICE VGG_ACTIVE voltage                       
VGG_INA = -1.30000000000000004 / ALICE VGG_INACTIVE voltage                     
VDDOUT  =                   -1 / ALICE VDDOUT voltage                           
V3      = -2.79999999999999982 / ALICE V3 voltage                               
VLCLR   =                   -3 / ALICE VLCLR voltage                            



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