# AMI unit tests¶

There are unit tests for AMI Analyze and AMI interface.

## test_ami_interface¶

Make sure ami_analyze fails if input is an input file of type _calints

Make sure ami_analyze fails if input is CubeModel for _calints

Make sure that ami_analyze fails if no throughput reffile is available

## test_ami_analyze¶

### utils module tests:¶

For the module *utils* we have several tests that compare the calculated value with a known value. The tests are:

Test of rebin() and krebin()

Test of quadratic

Test of findmax

Test of makeA

Test of fringes2pistons

Test of rcrosscorrelate()

Test of crosscorrelate()

#### leastsqnrm module tests:¶

- Test of rotatevectors()
Positive x decreases under slight rotation, and positive y increases under slight rotation.

- Test of flip()
Change sign of 2nd coordinate of holes.

- Test of mas2rad()
Convert angle in milli arc-sec to radians.

- Test of rad2mas()
Convert input angle in radians to milli arc sec.

- Test of sin2deltapistons()
Each baseline has one sine and one cosine fringe with a coefficient that depends on the piston difference between the two holes that make the baseline. For a 7-hole mask there are 21 baselines and therefore there are 42 sine and cosine terms that contribute to the fringe model. This function calculates the sine of this piston difference.

- Test of cos2deltapistons()
Each baseline has one sine and one cosine fringe with a coefficient that depends on the piston difference between the two holes that make the baseline. For a 7-hole mask there are 21 baselines and therefore there are 42 sine and cosine terms that contribute to the fringe model. This function calculate the cosine of this piston difference.

- Test of replacenan()
Replace singularities encountered in the analytical hexagon Fourier transform with the analytically derived limits. (pi/4)

- Test of hexpb()
Calculate the primary beam for hexagonal holes.

- Test of model_array
Create a model using the specified wavelength.

- Test of ffc
Calculate cosine terms of analytic model.

- Test of ffs
Calculate sine terms of analytic model.

- Test of return_CAs
Calculate the closure amplitudes.

- Test of closurephase
Calculate closure phases between each pair of holes.

- Test of redundant_cps
Calculate closure phases for each set of 3 holes.

- Test of populate_symmamparray
Populate the symmetric fringe amplitude array.

- Test of populate_antisymmphasearray
Populate the antisymmetric fringe phase array.

- Test of tan2visibilities
From the solution to the fit, calculate the fringe amplitude and phase.

- Test of multiplyenv
Multiply the envelope by each fringe ‘image’.

### hexee module tests:¶

- Test of g_eeAG()
Calculate the Fourier transform of one half of a hexagon that is bisected from one corner to its diametrically opposite corner.

- Test of glimit()
Calculate the analytic limit of the Fourier transform of one half of the hexagon along eta=0.

### analyticnrm2 module tests:¶

Test of PSF()

Test of ASFhex() in the analyticnrm2 module FOR HEX

Test of interf()

Test of phasor()

### webb_psf module test:¶

- Test of PSF()
Create a Throughput datamodel, having a dummy filter bandpass data that peaks at 1.0 at the center and decreases in the wings.