test/unit/test_data.py

   1 import sys
   2 if sys.path[0] != "../..":
   3     sys.path.insert(0, "../..")
   4
   5 import unittest
   6
   7 import io
   8 from pyx.graph import data
   9
  10 class DataTestCase(unittest.TestCase):
  11
  12     def testPoints(self):
  13         mydata = data.points([[1, 2, 3], [4, 5, 6]], a=1, b=2)
  14         self.failUnlessEqual(mydata.columndata[0], [1, 2])
  15         self.failUnlessEqual(mydata.columns["a"], [1, 4])
  16         self.failUnlessEqual(mydata.columndata[2], [2, 5])
  17         self.failUnlessEqual("c" in list(mydata.columns.keys()), 0)
  18
  19     def testValues(self):
  20         mydata = data.values(a=[1, 4])
  21         self.failUnlessEqual(mydata.columns["a"], [1, 4])
  22         self.failUnlessEqual("c" in list(mydata.columns.keys()), 0)
  23
  24     def testData(self):
  25         mydata = data.points([[1], [2]], a=1)
  26         mydata2 = data.data(mydata, a="2*a", b="2*$1*a", c="4*$(i)*a*$(-1)", context={"i":1})
  27         self.failUnlessEqual(mydata.columns["a"], [1, 2])
  28         self.failUnlessAlmostEqual(mydata2.columns["a"][0], 2.0)
  29         self.failUnlessAlmostEqual(mydata2.columns["a"][1], 4.0)
  30         self.failUnlessAlmostEqual(mydata2.columns["b"][0], 2.0)
  31         self.failUnlessAlmostEqual(mydata2.columns["b"][1], 8.0)
  32         self.failUnlessAlmostEqual(mydata2.columns["c"][0], 4.0)
  33         self.failUnlessAlmostEqual(mydata2.columns["c"][1], 32.0)
  34         mydata3 = data.data(mydata2, a="b", b="2*c")
  35         self.failUnlessEqual(mydata3.columns["a"], mydata2.columns["b"])
  36         self.failUnlessAlmostEqual(mydata3.columns["b"][0], 2*mydata2.columns["c"][0])
  37         self.failUnlessAlmostEqual(mydata3.columns["b"][1], 2*mydata2.columns["c"][1])
  38
  39         a = "nothing"
  40         two = 2
  41         f = lambda x: x*x
  42         mydata = data.points([[1], [2]], a=1)
  43         mydata2 = data.data(mydata, b="two*a", c="two*$1*a", d="f($1)", context=locals())
  44         self.failUnlessEqual(mydata.columndata[0], [1, 2])
  45         self.failUnlessAlmostEqual(mydata2.columns["b"][0], 2.0)
  46         self.failUnlessAlmostEqual(mydata2.columns["b"][1], 4.0)
  47         self.failUnlessAlmostEqual(mydata2.columns["c"][0], 2.0)
  48         self.failUnlessAlmostEqual(mydata2.columns["c"][1], 8.0)
  49         self.failUnlessAlmostEqual(mydata2.columns["d"][0], 1.0)
  50         self.failUnlessAlmostEqual(mydata2.columns["d"][1], 4.0)
  51
  52     def testFile(self):
  53         testfile = io.StringIO("""#a
  54 0
  55 1 eins
  56 2 "2"
  57 3 x"x""")
  58         mydata = data.file(testfile, row=0, a="a", b=2)
  59         self.failUnlessEqual(mydata.columns["row"], [1, 2, 3, 4])
  60         self.failUnlessAlmostEqual(mydata.columns["a"][0], 0.0)
  61         self.failUnlessAlmostEqual(mydata.columns["a"][1], 1.0)
  62         self.failUnlessAlmostEqual(mydata.columns["a"][2], 2.0)
  63         self.failUnlessAlmostEqual(mydata.columns["a"][3], 3.0)
  64         self.failUnlessEqual(mydata.columns["b"][0], None)
  65         self.failUnlessEqual(mydata.columns["b"][1], "eins")
  66         self.failUnlessEqual(mydata.columns["b"][2], "2")
  67         self.failUnlessEqual(mydata.columns["b"][3], "x\"x")
  68         testfile = io.StringIO("""#a
  69 0
  70 1
  71 2
  72 3
  73 4
  74 5
  75 6
  76 7
  77 8
  78 9""")
  79         mydata = data.file(testfile, title="title", skiphead=3, skiptail=2, every=2, row=0)
  80         self.failUnlessEqual(mydata.columns["row"], [4, 6, 8])
  81         self.failUnlessEqual(mydata.title, "title")
  82
  83     def testSec(self):
  84         testfile = io.StringIO("""[sec1]
  85 opt1=a1
  86 opt2=a2
  87 val=1
  88 val=2
  89
  90 [sec2]
  91 opt1=a4
  92 opt2=a5
  93 val=2
  94 val=1
  95
  96 [sec1]
  97 opt3=a3""")
  98         mydata = data.conffile(testfile, sec=0, a="opt1", b="opt2", c="opt3", d="val")
  99         self.failUnlessEqual(mydata.columns["sec"], ["sec1", "sec2"])
 100         self.failUnlessEqual(mydata.columns["a"], ["a1", "a4"])
 101         self.failUnlessEqual(mydata.columns["b"], ["a2", "a5"])
 102         self.failUnlessEqual(mydata.columns["c"], ["a3", None])
 103         self.failUnlessAlmostEqual(mydata.columns["d"][0], 2.0)
 104         self.failUnlessAlmostEqual(mydata.columns["d"][1], 1.0)
 105
 106     def testParamfunction(self):
 107         mydata = data.paramfunction("k", 0, 9, "x, y = k, -k", points=10)
 108         for i in range(10):
 109             self.failUnlessEqual(mydata.columns["x"][i], i)
 110             self.failUnlessEqual(mydata.columns["y"][i], -i)
 111
 112
 113 if __name__ == "__main__":
 114     unittest.main()