From: Michael Orlitzky <michael@orlitzky.com>
Date: Sun, 16 Sep 2012 05:28:45 +0000 (-0400)
Subject: Check for existence of the include path before including it in divided_difference.m.
X-Git-Url: https://gitweb.michael.orlitzky.com/?a=commitdiff_plain;h=62d652799ded51169bda744d8728e1d33582fa5f;p=octave.git

Check for existence of the include path before including it in divided_difference.m.
Rename the unit test script.
Check for satisfaction of all elements in unit_test_equals.m.
---

diff --git a/divided_difference.m b/divided_difference.m
index 785b66f..cd4b018 100644
--- a/divided_difference.m
+++ b/divided_difference.m
@@ -16,7 +16,10 @@ function dd = divided_difference(f, xs)
   ##
   ##   * ``dd`` - The divided difference f[xs(1), xs(2),...]
   ##
-  addpath('../homework1/src');
+  if (exist('../homework1/src', 'dir'))
+    addpath('../homework1/src');
+  end
+
   order = length(xs) - 1;
   
   if (order < 0)
diff --git a/unit-tests b/run-tests.m
similarity index 68%
rename from unit-tests
rename to run-tests.m
index c0737ba..ef72b10 100755
--- a/unit-tests
+++ b/run-tests.m
@@ -9,3 +9,7 @@ unit_test_equals("sin[0] == 0", ...
 unit_test_equals("sin[0, pi] == 0", ...
 		 0, ...
 		 divided_difference(@sin, [0,pi]));
+
+unit_test_equals("sin[0, pi, 2*pi] == 0", ...
+		 0, ...
+		 divided_difference(@sin, [0,pi,2*pi]));
diff --git a/unit_test_equals.m b/unit_test_equals.m
index e8b00d6..3b1e182 100644
--- a/unit_test_equals.m
+++ b/unit_test_equals.m
@@ -1,5 +1,5 @@
 function unit_test_equals(test_title, result_A, result_B)
   tol = 0.0001;
   err = abs(result_A - result_B);
-  unit_test(test_title, 1, all(err < tol));
+  unit_test(test_title, 1, all(all(err < tol)));
 endfunction