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Posted to commits@commons.apache.org by lu...@apache.org on 2015/12/09 17:17:02 UTC
[22/50] [abbrv] [math] Added tests for midpoint integrator.
Added tests for midpoint integrator.
Project: http://git-wip-us.apache.org/repos/asf/commons-math/repo
Commit: http://git-wip-us.apache.org/repos/asf/commons-math/commit/52de3186
Tree: http://git-wip-us.apache.org/repos/asf/commons-math/tree/52de3186
Diff: http://git-wip-us.apache.org/repos/asf/commons-math/diff/52de3186
Branch: refs/heads/MATH_3_X
Commit: 52de31868be3d3b5cf43754c5880a78cf0ef1a81
Parents: b50f149
Author: Luc Maisonobe <lu...@apache.org>
Authored: Thu Dec 3 18:13:10 2015 +0100
Committer: Luc Maisonobe <lu...@apache.org>
Committed: Thu Dec 3 18:13:10 2015 +0100
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.../nonstiff/MidpointFieldIntegratorTest.java | 99 ++++++++++++++++++++
1 file changed, 99 insertions(+)
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http://git-wip-us.apache.org/repos/asf/commons-math/blob/52de3186/src/test/java/org/apache/commons/math3/ode/nonstiff/MidpointFieldIntegratorTest.java
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diff --git a/src/test/java/org/apache/commons/math3/ode/nonstiff/MidpointFieldIntegratorTest.java b/src/test/java/org/apache/commons/math3/ode/nonstiff/MidpointFieldIntegratorTest.java
new file mode 100644
index 0000000..1e43f60
--- /dev/null
+++ b/src/test/java/org/apache/commons/math3/ode/nonstiff/MidpointFieldIntegratorTest.java
@@ -0,0 +1,99 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.math3.ode.nonstiff;
+
+
+import org.apache.commons.math3.Field;
+import org.apache.commons.math3.RealFieldElement;
+import org.apache.commons.math3.util.Decimal64Field;
+import org.junit.Test;
+
+public class MidpointFieldIntegratorTest extends AbstractRungeKuttaFieldIntegratorTest {
+
+ protected <T extends RealFieldElement<T>> RungeKuttaFieldIntegrator<T>
+ createIntegrator(Field<T> field, T step) {
+ return new MidpointFieldIntegrator<T>(field, step);
+ }
+
+ @Test
+ public void testNonFieldIntegratorConsistency() {
+ doTestNonFieldIntegratorConsistency(Decimal64Field.getInstance());
+ }
+
+ @Test
+ public void testMissedEndEvent() {
+ doTestMissedEndEvent(Decimal64Field.getInstance(), 1.0e-15, 6.0e-5);
+ }
+
+ @Test
+ public void testSanityChecks() {
+ doTestSanityChecks(Decimal64Field.getInstance());
+ }
+
+ @Test
+ public void testDecreasingSteps() {
+ doTestDecreasingSteps(Decimal64Field.getInstance(), 1.0, 1.0, 1.0e-10);
+ }
+
+ @Test
+ public void testSmallStep() {
+ doTestSmallStep(Decimal64Field.getInstance(), 2.0e-7, 1.0e-6, 1.0e-12, "midpoint");
+ }
+
+ @Test
+ public void testBigStep() {
+ doTestBigStep(Decimal64Field.getInstance(), 0.01, 0.05, 1.0e-12, "midpoint");
+
+ }
+
+ @Test
+ public void testBackward() {
+ doTestBackward(Decimal64Field.getInstance(), 6.0e-4, 6.0e-4, 1.0e-12, "midpoint");
+ }
+
+ @Test
+ public void testKepler() {
+ doTestKepler(Decimal64Field.getInstance(), 1.19, 0.01);
+ }
+
+ @Test
+ public void testStepSize() {
+ doTestStepSize(Decimal64Field.getInstance(), 1.0e-12);
+ }
+
+ @Test
+ public void testSingleStep() {
+ doTestSingleStep(Decimal64Field.getInstance(), 0.21);
+ }
+
+ @Test
+ public void testTooLargeFirstStep() {
+ doTestTooLargeFirstStep(Decimal64Field.getInstance());
+ }
+
+ @Test
+ public void testUnstableDerivative() {
+ doTestUnstableDerivative(Decimal64Field.getInstance(), 1.0e-12);
+ }
+
+ @Test
+ public void testDerivativesConsistency() {
+ doTestDerivativesConsistency(Decimal64Field.getInstance(), 1.0e-10);
+ }
+
+}