[Scipy-svn] r4914 - trunk/scipy/stats/tests

[scipy-svn at scipy.org]

Author: cdavid
Date: 2008-11-02 03:53:10 -0600 (Sun, 02 Nov 2008)
New Revision: 4914

Modified:
   trunk/scipy/stats/tests/test_stats.py
Log:
More tests for Student t-test.

Modified: trunk/scipy/stats/tests/test_stats.py
===================================================================
--- trunk/scipy/stats/tests/test_stats.py	2008-11-02 09:52:52 UTC (rev 4913)
+++ trunk/scipy/stats/tests/test_stats.py	2008-11-02 09:53:10 UTC (rev 4914)
@@ -870,20 +870,34 @@
 class TestStudentTest(TestCase):
     X1 = np.array([-1, 0, 1])
     X2 = np.array([0, 1, 2])
-    T1 = 0
-    P1 = 1
-    T2 = 1.732051
-    P2 = 0.2254033
+    T1_0 = 0
+    P1_0 = 1
+    T1_1 = -1.732051
+    P1_1 = 0.2254033
+    T1_2 = -3.464102
+    P1_2 =  0.0741799
+    T2_0 = 1.732051
+    P2_0 = 0.2254033
     def test_onesample(self):
         t, p = stats.ttest_1samp(self.X1, 0)
 
-        assert_array_almost_equal(t, self.T1)
-        assert_array_almost_equal(p, self.P1)
+        assert_array_almost_equal(t, self.T1_0)
+        assert_array_almost_equal(p, self.P1_0)
 
         t, p = stats.ttest_1samp(self.X2, 0)
 
-        assert_array_almost_equal(t, self.T2)
-        assert_array_almost_equal(p, self.P2)
+        assert_array_almost_equal(t, self.T2_0)
+        assert_array_almost_equal(p, self.P2_0)
 
+        t, p = stats.ttest_1samp(self.X1, 1)
+
+        assert_array_almost_equal(t, self.T1_1)
+        assert_array_almost_equal(p, self.P1_1)
+
+        t, p = stats.ttest_1samp(self.X1, 2)
+
+        assert_array_almost_equal(t, self.T1_2)
+        assert_array_almost_equal(p, self.P1_2)
+
 if __name__ == "__main__":
     run_module_suite()