import unittest
import os
import io
import sys
import icartt

def compare_files(str_in, str_out, diff=0):
    str_out.seek(0)
    str_in.seek(0)
    input  = str_in.readlines()
    output = str_out.readlines()
    str_in.close()
    str_out.close()
    
    if not len(input) == len(output):
        raise Exception("Input ({:d}) and output ({:d}) do not have the same number of lines!".format(len(input), len(output)))
    
    for i in range(len(input)):
        inline  = input[i].strip().replace(" ", "")
        outline = output[i].strip().replace(" ", "")
        if not inline == outline:
            print("Line {:d} differs:".format(i))
            print("  input: {:s}".format(inline))
            print(" output: {:s}".format(outline))
    
    return True

class DatasetTestCase(unittest.TestCase):
    def test_simple_1001_NOx(self):
        fn = 'tests/examples/NOx_RHBrown_20040830_R0.ict'
        
        print(fn)
        
        str_in  = open(fn)
        str_out = io.StringIO()
        
        ict = icartt.Dataset(fn, loadData=False)
        
        ict.read_data()
        ict.write(str_out)
        
        assert compare_files(str_in, str_out)

    def test_simple_1001_HOx(self):        
        fn = 'tests/examples/HOX_DC8_20040712_R0.ict'

        print(fn)
        
        str_in  = open(fn)
        str_out = io.StringIO()
        
        ict = icartt.Dataset(fn, loadData=False)
        
        ict.read_data()
        ict.write(str_out)
        
        assert compare_files(str_in, str_out)

    def test_simple_2110_AR(self):
        fn = 'tests/examples/AR_DC8_20050203_R0.ict'
        
        print(fn)
        
        str_in  = open(fn)
        str_out = io.StringIO()
        
        ict = icartt.Dataset(fn, loadData=False)
        
        ict.read_data()
        ict.write(str_out)
        
        assert compare_files(str_in, str_out)

    def test_simple_2110_AROTAL(self):
        fn = 'tests/examples/AROTAL-RAY_DC8_20040715_R1.ict'
        
        print(fn)
        
        str_in  = open(fn)
        str_out = io.StringIO()
        
        ict = icartt.Dataset(fn, loadData=False)
        
        ict.read_data()
        ict.write(str_out)
        
        assert compare_files(str_in, str_out)

def suite():
    suite = unittest.TestSuite()
    suite.addTest( DatasetTestCase('test_simple_1001_NOx') )
    suite.addTest( DatasetTestCase('test_simple_1001_HOx') )
    suite.addTest( DatasetTestCase('test_simple_2110_AR') )    
    suite.addTest( DatasetTestCase('test_simple_2110_AROTAL') )    
    return suite

if __name__ == '__main__':
    runner = unittest.TextTestRunner()
    runner.run(suite())