Added BasisFunctionTests.cpp. Removed BasisFunction unit test and tru…

isis/tests/BasisFunctionTests.cpp

@@ -0,0 +1,142 @@
+#include <gtest/gtest.h>
+#include <QString>
+#include "BasisFunction.h"
+#include "IException.h"
+
+TEST(BasisFunction, Initialization)
+{
+  std::string name("basis1");
+  Isis::BasisFunction testBasis("basis1", 3, 3);
+
+  EXPECT_EQ(testBasis.Coefficients(), 3);
+  EXPECT_EQ(testBasis.Variables(), 3);
+  EXPECT_STREQ(testBasis.Name().toStdString().c_str(), name.c_str());
+}
+
+TEST(BasisFunction, Evaluation)
+{
+  Isis::BasisFunction testBasis("basis", 3, 3);
+  double expectedOutput = 12.7;
+  double output;
+  std::vector <double> vars;
+  std::vector <double> coefs;
+
+  coefs.push_back(2.5);
+  coefs.push_back(3.2);
+  coefs.push_back(1.0);
+  testBasis.SetCoefficients(coefs);
+
+  vars.push_back(3.0);
+  vars.push_back(1.0);
+  vars.push_back(2.0);
+
+  output = testBasis.Evaluate(vars);
+  EXPECT_DOUBLE_EQ(output, expectedOutput);
+
+  vars[0] = 3.5;
+  vars[1] = 1.2;
+  vars[2] = 10.8;
+
+  expectedOutput = 23.39;
+  output = testBasis.Evaluate(vars);
+  EXPECT_DOUBLE_EQ(output, expectedOutput);
+}
+
+TEST(BasisFunction, InequalCoefficientAmount)
+{
+  Isis:: BasisFunction testBasis("basis", 1, 1);
+  std::vector <double> coefs;
+
+  coefs.push_back(1.0);
+  coefs.push_back(1.0);
+
+  try
+  {
+    testBasis.SetCoefficients(coefs);
+  }
+  catch(Isis::IException &e)
+  {
+    EXPECT_TRUE(e.toString().toLatin1().contains("Unable to set coefficients vector"))
+      << e.toString().toStdString();
+  }
+  catch(...)
+  {
+    FAIL() << "Expected an IException with message: "
+      "\"Unable to set coefficients vector. The size of the given vector "
+                  "does not match number of coefficients "
+                  "in the basis equation\"";
+  }
+
+}
+
+TEST(BasisFunction, InequalVariableAmount)
+{
+  Isis:: BasisFunction testBasis("basis", 1, 1);
+  std::vector <double> coefs;
+  std::vector <double> vars;
+
+  coefs.push_back(1.0);
+  testBasis.SetCoefficients(coefs);
+
+  vars.push_back(1.0);
+  vars.push_back(1.0);
+
+  try
+  {
+    testBasis.Evaluate(vars);
+  }
+  catch(Isis::IException &e)
+  {
+    EXPECT_TRUE(e.toString().toLatin1().contains("Unable to evaluate function"))
+      << e.toString().toStdString();
+  }
+  catch(...)
+  {
+    FAIL() << "Expected an IException with message: "
+              "\"Unable to set coefficients vector. The size of the given vector"
+              " does not match number of coefficients in the basis equation\"";
+  }
+}
+
+TEST(BasisFunction, ExtraCoefficients)
+{
+  Isis::BasisFunction testBasis("basis", 1, 2);
+  std::vector <double> coefs;
+  std::vector <double> vars;
+
+  coefs.push_back(1.0);
+  coefs.push_back(1.0);
+  testBasis.SetCoefficients(coefs);
+
+  vars.push_back(1.0);
+  try
+  {
+    testBasis.Evaluate(vars);
+  }
+  catch(Isis::IException &e)
+  {
+    EXPECT_TRUE(e.toString().toLatin1().contains("Unable to evaluate function"))
+      << e.toString().toStdString();
+  }
+  catch(...)
+  {
+    FAIL() << "Expected an IException with message: "
+               "\"Unable to evaluate function for the given vector of values. "
+               "The number of terms in the expansion does not "
+               "match number of coefficients in the basis equation\"";
+  }
+}
+
+TEST(BasisFunction, NonVectorVariable)
+{
+  Isis::BasisFunction testBasis("basis", 1, 1);
+  double var = 1.2;
+  double expectedOutput = 3.0;
+  double output;
+  std::vector <double> coefs;
+
+  coefs.push_back(2.5);
+  testBasis.SetCoefficients(coefs);
+  output = testBasis.Evaluate(var);
+  EXPECT_DOUBLE_EQ(output, expectedOutput);
+}