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45 lines
1.7 KiB
45 lines
1.7 KiB
/*
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* Copyright 2005 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.common.geometry;
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import junit.framework.TestCase;
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public strictfp class S1AngleTest extends TestCase {
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public void testBasic() {
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// Check that the conversion between Pi radians and 180 degrees is exact.
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assertEquals(S1Angle.radians(Math.PI).radians(), Math.PI);
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assertEquals(S1Angle.radians(Math.PI).degrees(), 180.0);
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assertEquals(S1Angle.degrees(180).radians(), Math.PI);
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assertEquals(S1Angle.degrees(180).degrees(), 180.0);
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assertEquals(S1Angle.radians(Math.PI / 2).degrees(), 90.0);
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// Check negative angles.
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assertEquals(S1Angle.radians(-Math.PI / 2).degrees(), -90.0);
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assertEquals(S1Angle.degrees(-45).radians(), -Math.PI / 4);
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// Check that E5/E6/E7 representations work as expected.
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assertEquals(S1Angle.e5(2000000), S1Angle.degrees(20));
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assertEquals(S1Angle.e6(-60000000), S1Angle.degrees(-60));
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assertEquals(S1Angle.e7(750000000), S1Angle.degrees(75));
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assertEquals(S1Angle.degrees(12.34567).e5(), 1234567);
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assertEquals(S1Angle.degrees(12.345678).e6(), 12345678);
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assertEquals(S1Angle.degrees(-12.3456789).e7(), -123456789);
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}
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}
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