Switched out in-repo examples for test scripts

Example use now lives in the wiki at github.com/Foggalong/RobustOCS/wiki

examples/04/S04.txt

@@ -1,4 +1,4 @@
 1 1 0.11111111111111
 2 2 0.11111111111111
 3 3 4.0
-4 4 4.0
+4 4 4.0

examples/04/test.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+
+import numpy as np
+import robustocs as rocs
+
+# SETUP
+# -----
+
+# load in the problem variables
+sigma, mubar, omega, n = rocs.load_problem(
+    "A04.txt",
+    "EBV04.txt",
+    "S04.txt",
+    issparse=True
+)
+sires = range(0, n, 2)
+dams = range(1, n, 2)
+lam = 0.5
+kap = 1
+
+# true solution to the standard and robust problems
+true_std = np.array([0, 0, 0.5, 0.5])
+true_rob = np.array([0.382, 0.382, 0.118, 0.118])
+
+# tolerance for comparisons; NOTE this test uses a much stricter tolerance
+# for the non-robust problem since both solvers should compute it exactly.
+tol_std = 1e-7
+tol_rob = 1e-3
+
+
+# TESTS
+# -----
+
+w, obj = rocs.highs_standard_genetics(sigma, mubar, sires, dams, lam, n)
+assert ((w - true_std) < tol_std).all(), "QP in HiGHS was incorrect"
+
+w, obj = rocs.gurobi_standard_genetics(sigma, mubar, sires, dams, lam, n)
+assert ((w - true_std) < tol_std).all(), "QP in Gurobi was incorrect"
+
+w, z, obj = rocs.gurobi_robust_genetics(
+    sigma, mubar, omega, sires, dams, lam, kap, n)
+assert ((w - true_rob) < tol_rob).all(), "conic in Gurobi was incorrect"
+
+w, z, obj = rocs.gurobi_robust_genetics_sqp(
+    sigma, mubar, omega, sires, dams, lam, kap, n)
+assert ((w - true_rob) < tol_rob).all(), "SQP in Gurobi was incorrect"
+
+w, z, obj = rocs.highs_robust_genetics_sqp(
+    sigma, mubar, omega, sires, dams, lam, kap, n)
+assert ((w - true_rob) < tol_rob).all(), "conic in HiGHS was incorrect"
+
+print("Success!")