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Add unit test

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This commit is contained in:
JoePfeiffer 2023-03-23 20:11:28 -06:00
parent 43b17c6eab
commit 77d2a5cd57
1 changed files with 45 additions and 0 deletions
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45
core/test/net/sf/openrocket/rocketcomponent/FreeformFinSetTest.java
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@ -1557,4 +1557,49 @@ public class FreeformFinSetTest extends BaseTestCase {
} }
} }
/**
* Test that fins on transitions don't get NaN MAClength
*/
@Test
public void testFinsOnTransitions() {
// Rocket consisting of just a transition and a freeform fin set
final Rocket rocket = new Rocket();
final AxialStage stage = new AxialStage();
rocket.addChild(stage);
Transition trans = new Transition();
stage.addChild(trans);
FreeformFinSet fins = new FreeformFinSet();
trans.addChild(fins);
// set the finset at the beginning of the transition
fins.setAxialMethod(AxialMethod.TOP);
fins.setAxialOffset(0.0);
// Test 1: transition getting smaller
trans.setForeRadius(trans.getForeRadius()*2.0);
fins.setPoints(new Coordinate[] {
new Coordinate(0, 0),
new Coordinate(trans.getLength(), 0),
new Coordinate(trans.getLength(), trans.getAftRadius() - trans.getForeRadius())
});
FinSetCalc calc = new FinSetCalc(fins);
assertEquals(0.075, calc.getMACLength(), EPSILON);
// Test 2: transition getting larger
trans.setForeRadius(trans.getAftRadius());
trans.setAftRadius(trans.getAftRadius()*2.0);
fins.setPoints(new Coordinate[] {
new Coordinate(0, 0),
new Coordinate(0, trans.getAftRadius() - trans.getForeRadius()),
new Coordinate(trans.getLength(), trans.getAftRadius() - trans.getForeRadius())
});
calc = new FinSetCalc(fins);
assertEquals(0.05053191489361704, calc.getMACLength(), EPSILON);
}
} }