| /* |
| * Copyright (C) 2008 The Guava Authors |
| * |
| * Licensed 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 com.google.common.primitives; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static java.lang.Float.NaN; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.annotations.GwtIncompatible; |
| import com.google.common.base.Converter; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.testing.Helpers; |
| import com.google.common.testing.NullPointerTester; |
| import com.google.common.testing.SerializableTester; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.List; |
| import junit.framework.TestCase; |
| |
| /** |
| * Unit test for {@link Floats}. |
| * |
| * @author Kevin Bourrillion |
| */ |
| @GwtCompatible(emulated = true) |
| @SuppressWarnings("cast") // redundant casts are intentional and harmless |
| public class FloatsTest extends TestCase { |
| private static final float[] EMPTY = {}; |
| private static final float[] ARRAY1 = {(float) 1}; |
| private static final float[] ARRAY234 = {(float) 2, (float) 3, (float) 4}; |
| |
| private static final float LEAST = Float.NEGATIVE_INFINITY; |
| private static final float GREATEST = Float.POSITIVE_INFINITY; |
| |
| private static final float[] NUMBERS = |
| new float[] { |
| LEAST, |
| -Float.MAX_VALUE, |
| -1f, |
| -0f, |
| 0f, |
| 1f, |
| Float.MAX_VALUE, |
| GREATEST, |
| Float.MIN_NORMAL, |
| -Float.MIN_NORMAL, |
| Float.MIN_VALUE, |
| -Float.MIN_VALUE, |
| Integer.MIN_VALUE, |
| Integer.MAX_VALUE, |
| Long.MIN_VALUE, |
| Long.MAX_VALUE |
| }; |
| |
| private static final float[] VALUES = Floats.concat(NUMBERS, new float[] {NaN}); |
| |
| public void testHashCode() { |
| for (float value : VALUES) { |
| assertEquals(((Float) value).hashCode(), Floats.hashCode(value)); |
| } |
| } |
| |
| public void testIsFinite() { |
| for (float value : NUMBERS) { |
| assertEquals(!(Float.isInfinite(value) || Float.isNaN(value)), Floats.isFinite(value)); |
| } |
| } |
| |
| public void testCompare() { |
| for (float x : VALUES) { |
| for (float y : VALUES) { |
| // note: spec requires only that the sign is the same |
| assertEquals(x + ", " + y, Float.valueOf(x).compareTo(y), Floats.compare(x, y)); |
| } |
| } |
| } |
| |
| public void testContains() { |
| assertFalse(Floats.contains(EMPTY, (float) 1)); |
| assertFalse(Floats.contains(ARRAY1, (float) 2)); |
| assertFalse(Floats.contains(ARRAY234, (float) 1)); |
| assertTrue(Floats.contains(new float[] {(float) -1}, (float) -1)); |
| assertTrue(Floats.contains(ARRAY234, (float) 2)); |
| assertTrue(Floats.contains(ARRAY234, (float) 3)); |
| assertTrue(Floats.contains(ARRAY234, (float) 4)); |
| |
| for (float value : NUMBERS) { |
| assertTrue("" + value, Floats.contains(new float[] {5f, value}, value)); |
| } |
| assertFalse(Floats.contains(new float[] {5f, NaN}, NaN)); |
| } |
| |
| public void testIndexOf() { |
| assertEquals(-1, Floats.indexOf(EMPTY, (float) 1)); |
| assertEquals(-1, Floats.indexOf(ARRAY1, (float) 2)); |
| assertEquals(-1, Floats.indexOf(ARRAY234, (float) 1)); |
| assertEquals(0, Floats.indexOf(new float[] {(float) -1}, (float) -1)); |
| assertEquals(0, Floats.indexOf(ARRAY234, (float) 2)); |
| assertEquals(1, Floats.indexOf(ARRAY234, (float) 3)); |
| assertEquals(2, Floats.indexOf(ARRAY234, (float) 4)); |
| assertEquals( |
| 1, Floats.indexOf(new float[] {(float) 2, (float) 3, (float) 2, (float) 3}, (float) 3)); |
| |
| for (float value : NUMBERS) { |
| assertEquals("" + value, 1, Floats.indexOf(new float[] {5f, value}, value)); |
| } |
| assertEquals(-1, Floats.indexOf(new float[] {5f, NaN}, NaN)); |
| } |
| |
| public void testIndexOf_arrayTarget() { |
| assertEquals(0, Floats.indexOf(EMPTY, EMPTY)); |
| assertEquals(0, Floats.indexOf(ARRAY234, EMPTY)); |
| assertEquals(-1, Floats.indexOf(EMPTY, ARRAY234)); |
| assertEquals(-1, Floats.indexOf(ARRAY234, ARRAY1)); |
| assertEquals(-1, Floats.indexOf(ARRAY1, ARRAY234)); |
| assertEquals(0, Floats.indexOf(ARRAY1, ARRAY1)); |
| assertEquals(0, Floats.indexOf(ARRAY234, ARRAY234)); |
| assertEquals(0, Floats.indexOf(ARRAY234, new float[] {(float) 2, (float) 3})); |
| assertEquals(1, Floats.indexOf(ARRAY234, new float[] {(float) 3, (float) 4})); |
| assertEquals(1, Floats.indexOf(ARRAY234, new float[] {(float) 3})); |
| assertEquals(2, Floats.indexOf(ARRAY234, new float[] {(float) 4})); |
| assertEquals( |
| 1, |
| Floats.indexOf( |
| new float[] {(float) 2, (float) 3, (float) 3, (float) 3, (float) 3}, |
| new float[] {(float) 3})); |
| assertEquals( |
| 2, |
| Floats.indexOf( |
| new float[] { |
| (float) 2, (float) 3, (float) 2, (float) 3, (float) 4, (float) 2, (float) 3 |
| }, |
| new float[] {(float) 2, (float) 3, (float) 4})); |
| assertEquals( |
| 1, |
| Floats.indexOf( |
| new float[] { |
| (float) 2, (float) 2, (float) 3, (float) 4, (float) 2, (float) 3, (float) 4 |
| }, |
| new float[] {(float) 2, (float) 3, (float) 4})); |
| assertEquals( |
| -1, |
| Floats.indexOf( |
| new float[] {(float) 4, (float) 3, (float) 2}, |
| new float[] {(float) 2, (float) 3, (float) 4})); |
| |
| for (float value : NUMBERS) { |
| assertEquals( |
| "" + value, |
| 1, |
| Floats.indexOf(new float[] {5f, value, value, 5f}, new float[] {value, value})); |
| } |
| assertEquals(-1, Floats.indexOf(new float[] {5f, NaN, NaN, 5f}, new float[] {NaN, NaN})); |
| } |
| |
| public void testLastIndexOf() { |
| assertEquals(-1, Floats.lastIndexOf(EMPTY, (float) 1)); |
| assertEquals(-1, Floats.lastIndexOf(ARRAY1, (float) 2)); |
| assertEquals(-1, Floats.lastIndexOf(ARRAY234, (float) 1)); |
| assertEquals(0, Floats.lastIndexOf(new float[] {(float) -1}, (float) -1)); |
| assertEquals(0, Floats.lastIndexOf(ARRAY234, (float) 2)); |
| assertEquals(1, Floats.lastIndexOf(ARRAY234, (float) 3)); |
| assertEquals(2, Floats.lastIndexOf(ARRAY234, (float) 4)); |
| assertEquals( |
| 3, Floats.lastIndexOf(new float[] {(float) 2, (float) 3, (float) 2, (float) 3}, (float) 3)); |
| |
| for (float value : NUMBERS) { |
| assertEquals("" + value, 0, Floats.lastIndexOf(new float[] {value, 5f}, value)); |
| } |
| assertEquals(-1, Floats.lastIndexOf(new float[] {NaN, 5f}, NaN)); |
| } |
| |
| public void testMax_noArgs() { |
| try { |
| Floats.max(); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| public void testMax() { |
| assertEquals(GREATEST, Floats.max(GREATEST)); |
| assertEquals(LEAST, Floats.max(LEAST)); |
| assertEquals( |
| (float) 9, |
| Floats.max((float) 8, (float) 6, (float) 7, (float) 5, (float) 3, (float) 0, (float) 9)); |
| |
| assertEquals(0f, Floats.max(-0f, 0f)); |
| assertEquals(0f, Floats.max(0f, -0f)); |
| assertEquals(GREATEST, Floats.max(NUMBERS)); |
| assertTrue(Float.isNaN(Floats.max(VALUES))); |
| } |
| |
| public void testMin_noArgs() { |
| try { |
| Floats.min(); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| public void testMin() { |
| assertEquals(LEAST, Floats.min(LEAST)); |
| assertEquals(GREATEST, Floats.min(GREATEST)); |
| assertEquals( |
| (float) 0, |
| Floats.min((float) 8, (float) 6, (float) 7, (float) 5, (float) 3, (float) 0, (float) 9)); |
| |
| assertEquals(-0f, Floats.min(-0f, 0f)); |
| assertEquals(-0f, Floats.min(0f, -0f)); |
| assertEquals(LEAST, Floats.min(NUMBERS)); |
| assertTrue(Float.isNaN(Floats.min(VALUES))); |
| } |
| |
| public void testConstrainToRange() { |
| float tolerance = 1e-10f; |
| assertEquals((float) 1, Floats.constrainToRange((float) 1, (float) 0, (float) 5), tolerance); |
| assertEquals((float) 1, Floats.constrainToRange((float) 1, (float) 1, (float) 5), tolerance); |
| assertEquals((float) 3, Floats.constrainToRange((float) 1, (float) 3, (float) 5), tolerance); |
| assertEquals((float) -1, Floats.constrainToRange((float) 0, (float) -5, (float) -1), tolerance); |
| assertEquals((float) 2, Floats.constrainToRange((float) 5, (float) 2, (float) 2), tolerance); |
| try { |
| Floats.constrainToRange((float) 1, (float) 3, (float) 2); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| public void testConcat() { |
| assertTrue(Arrays.equals(EMPTY, Floats.concat())); |
| assertTrue(Arrays.equals(EMPTY, Floats.concat(EMPTY))); |
| assertTrue(Arrays.equals(EMPTY, Floats.concat(EMPTY, EMPTY, EMPTY))); |
| assertTrue(Arrays.equals(ARRAY1, Floats.concat(ARRAY1))); |
| assertNotSame(ARRAY1, Floats.concat(ARRAY1)); |
| assertTrue(Arrays.equals(ARRAY1, Floats.concat(EMPTY, ARRAY1, EMPTY))); |
| assertTrue( |
| Arrays.equals( |
| new float[] {(float) 1, (float) 1, (float) 1}, Floats.concat(ARRAY1, ARRAY1, ARRAY1))); |
| assertTrue( |
| Arrays.equals( |
| new float[] {(float) 1, (float) 2, (float) 3, (float) 4}, |
| Floats.concat(ARRAY1, ARRAY234))); |
| } |
| |
| public void testEnsureCapacity() { |
| assertSame(EMPTY, Floats.ensureCapacity(EMPTY, 0, 1)); |
| assertSame(ARRAY1, Floats.ensureCapacity(ARRAY1, 0, 1)); |
| assertSame(ARRAY1, Floats.ensureCapacity(ARRAY1, 1, 1)); |
| assertTrue( |
| Arrays.equals( |
| new float[] {(float) 1, (float) 0, (float) 0}, Floats.ensureCapacity(ARRAY1, 2, 1))); |
| } |
| |
| public void testEnsureCapacity_fail() { |
| try { |
| Floats.ensureCapacity(ARRAY1, -1, 1); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| try { |
| // notice that this should even fail when no growth was needed |
| Floats.ensureCapacity(ARRAY1, 1, -1); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| @GwtIncompatible // Float.toString returns different value in GWT. |
| public void testJoin() { |
| assertEquals("", Floats.join(",", EMPTY)); |
| assertEquals("1.0", Floats.join(",", ARRAY1)); |
| assertEquals("1.0,2.0", Floats.join(",", (float) 1, (float) 2)); |
| assertEquals("1.02.03.0", Floats.join("", (float) 1, (float) 2, (float) 3)); |
| } |
| |
| public void testLexicographicalComparator() { |
| List<float[]> ordered = |
| Arrays.asList( |
| new float[] {}, |
| new float[] {LEAST}, |
| new float[] {LEAST, LEAST}, |
| new float[] {LEAST, (float) 1}, |
| new float[] {(float) 1}, |
| new float[] {(float) 1, LEAST}, |
| new float[] {GREATEST, Float.MAX_VALUE}, |
| new float[] {GREATEST, GREATEST}, |
| new float[] {GREATEST, GREATEST, GREATEST}); |
| |
| Comparator<float[]> comparator = Floats.lexicographicalComparator(); |
| Helpers.testComparator(comparator, ordered); |
| } |
| |
| @GwtIncompatible // SerializableTester |
| public void testLexicographicalComparatorSerializable() { |
| Comparator<float[]> comparator = Floats.lexicographicalComparator(); |
| assertSame(comparator, SerializableTester.reserialize(comparator)); |
| } |
| |
| public void testReverse() { |
| testReverse(new float[] {}, new float[] {}); |
| testReverse(new float[] {1}, new float[] {1}); |
| testReverse(new float[] {1, 2}, new float[] {2, 1}); |
| testReverse(new float[] {3, 1, 1}, new float[] {1, 1, 3}); |
| testReverse(new float[] {-1, 1, -2, 2}, new float[] {2, -2, 1, -1}); |
| } |
| |
| private static void testReverse(float[] input, float[] expectedOutput) { |
| input = Arrays.copyOf(input, input.length); |
| Floats.reverse(input); |
| assertTrue(Arrays.equals(expectedOutput, input)); |
| } |
| |
| private static void testReverse( |
| float[] input, int fromIndex, int toIndex, float[] expectedOutput) { |
| input = Arrays.copyOf(input, input.length); |
| Floats.reverse(input, fromIndex, toIndex); |
| assertTrue(Arrays.equals(expectedOutput, input)); |
| } |
| |
| public void testReverseIndexed() { |
| testReverse(new float[] {}, 0, 0, new float[] {}); |
| testReverse(new float[] {1}, 0, 1, new float[] {1}); |
| testReverse(new float[] {1, 2}, 0, 2, new float[] {2, 1}); |
| testReverse(new float[] {3, 1, 1}, 0, 2, new float[] {1, 3, 1}); |
| testReverse(new float[] {3, 1, 1}, 0, 1, new float[] {3, 1, 1}); |
| testReverse(new float[] {-1, 1, -2, 2}, 1, 3, new float[] {-1, -2, 1, 2}); |
| } |
| |
| public void testSortDescending() { |
| testSortDescending(new float[] {}, new float[] {}); |
| testSortDescending(new float[] {1}, new float[] {1}); |
| testSortDescending(new float[] {1, 2}, new float[] {2, 1}); |
| testSortDescending(new float[] {1, 3, 1}, new float[] {3, 1, 1}); |
| testSortDescending(new float[] {-1, 1, -2, 2}, new float[] {2, 1, -1, -2}); |
| testSortDescending( |
| new float[] {-1, 1, Float.NaN, -2, -0, 0, 2}, new float[] {Float.NaN, 2, 1, 0, -0, -1, -2}); |
| } |
| |
| private static void testSortDescending(float[] input, float[] expectedOutput) { |
| input = Arrays.copyOf(input, input.length); |
| Floats.sortDescending(input); |
| // GWT's Arrays.equals doesn't appear to handle NaN correctly, so test each element individually |
| for (int i = 0; i < input.length; i++) { |
| assertEquals(0, Float.compare(expectedOutput[i], input[i])); |
| } |
| } |
| |
| private static void testSortDescending( |
| float[] input, int fromIndex, int toIndex, float[] expectedOutput) { |
| input = Arrays.copyOf(input, input.length); |
| Floats.sortDescending(input, fromIndex, toIndex); |
| // GWT's Arrays.equals doesn't appear to handle NaN correctly, so test each element individually |
| for (int i = 0; i < input.length; i++) { |
| assertEquals(0, Float.compare(expectedOutput[i], input[i])); |
| } |
| } |
| |
| public void testSortDescendingIndexed() { |
| testSortDescending(new float[] {}, 0, 0, new float[] {}); |
| testSortDescending(new float[] {1}, 0, 1, new float[] {1}); |
| testSortDescending(new float[] {1, 2}, 0, 2, new float[] {2, 1}); |
| testSortDescending(new float[] {1, 3, 1}, 0, 2, new float[] {3, 1, 1}); |
| testSortDescending(new float[] {1, 3, 1}, 0, 1, new float[] {1, 3, 1}); |
| testSortDescending(new float[] {-1, -2, 1, 2}, 1, 3, new float[] {-1, 1, -2, 2}); |
| testSortDescending( |
| new float[] {-1, 1, Float.NaN, -2, 2}, 1, 4, new float[] {-1, Float.NaN, 1, -2, 2}); |
| } |
| |
| @GwtIncompatible // SerializableTester |
| public void testStringConverterSerialization() { |
| SerializableTester.reserializeAndAssert(Floats.stringConverter()); |
| } |
| |
| public void testToArray() { |
| // need explicit type parameter to avoid javac warning!? |
| List<Float> none = Arrays.<Float>asList(); |
| assertTrue(Arrays.equals(EMPTY, Floats.toArray(none))); |
| |
| List<Float> one = Arrays.asList((float) 1); |
| assertTrue(Arrays.equals(ARRAY1, Floats.toArray(one))); |
| |
| float[] array = {(float) 0, (float) 1, (float) 3}; |
| |
| List<Float> three = Arrays.asList((float) 0, (float) 1, (float) 3); |
| assertTrue(Arrays.equals(array, Floats.toArray(three))); |
| |
| assertTrue(Arrays.equals(array, Floats.toArray(Floats.asList(array)))); |
| } |
| |
| public void testToArray_threadSafe() { |
| for (int delta : new int[] {+1, 0, -1}) { |
| for (int i = 0; i < VALUES.length; i++) { |
| List<Float> list = Floats.asList(VALUES).subList(0, i); |
| Collection<Float> misleadingSize = Helpers.misleadingSizeCollection(delta); |
| misleadingSize.addAll(list); |
| float[] arr = Floats.toArray(misleadingSize); |
| assertEquals(i, arr.length); |
| for (int j = 0; j < i; j++) { |
| assertEquals(VALUES[j], arr[j]); |
| } |
| } |
| } |
| } |
| |
| public void testToArray_withNull() { |
| List<Float> list = Arrays.asList((float) 0, (float) 1, null); |
| try { |
| Floats.toArray(list); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| public void testToArray_withConversion() { |
| float[] array = {(float) 0, (float) 1, (float) 2}; |
| |
| List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2); |
| List<Short> shorts = Arrays.asList((short) 0, (short) 1, (short) 2); |
| List<Integer> ints = Arrays.asList(0, 1, 2); |
| List<Float> floats = Arrays.asList((float) 0, (float) 1, (float) 2); |
| List<Long> longs = Arrays.asList((long) 0, (long) 1, (long) 2); |
| List<Double> doubles = Arrays.asList((double) 0, (double) 1, (double) 2); |
| |
| assertTrue(Arrays.equals(array, Floats.toArray(bytes))); |
| assertTrue(Arrays.equals(array, Floats.toArray(shorts))); |
| assertTrue(Arrays.equals(array, Floats.toArray(ints))); |
| assertTrue(Arrays.equals(array, Floats.toArray(floats))); |
| assertTrue(Arrays.equals(array, Floats.toArray(longs))); |
| assertTrue(Arrays.equals(array, Floats.toArray(doubles))); |
| } |
| |
| public void testAsList_isAView() { |
| float[] array = {(float) 0, (float) 1}; |
| List<Float> list = Floats.asList(array); |
| list.set(0, (float) 2); |
| assertTrue(Arrays.equals(new float[] {(float) 2, (float) 1}, array)); |
| array[1] = (float) 3; |
| assertThat(list).containsExactly((float) 2, (float) 3).inOrder(); |
| } |
| |
| public void testAsList_toArray_roundTrip() { |
| float[] array = {(float) 0, (float) 1, (float) 2}; |
| List<Float> list = Floats.asList(array); |
| float[] newArray = Floats.toArray(list); |
| |
| // Make sure it returned a copy |
| list.set(0, (float) 4); |
| assertTrue(Arrays.equals(new float[] {(float) 0, (float) 1, (float) 2}, newArray)); |
| newArray[1] = (float) 5; |
| assertEquals((float) 1, (float) list.get(1)); |
| } |
| |
| // This test stems from a real bug found by andrewk |
| public void testAsList_subList_toArray_roundTrip() { |
| float[] array = {(float) 0, (float) 1, (float) 2, (float) 3}; |
| List<Float> list = Floats.asList(array); |
| assertTrue( |
| Arrays.equals(new float[] {(float) 1, (float) 2}, Floats.toArray(list.subList(1, 3)))); |
| assertTrue(Arrays.equals(new float[] {}, Floats.toArray(list.subList(2, 2)))); |
| } |
| |
| public void testAsListEmpty() { |
| assertSame(Collections.emptyList(), Floats.asList(EMPTY)); |
| } |
| |
| /** |
| * A reference implementation for {@code tryParse} that just catches the exception from {@link |
| * Float#valueOf}. |
| */ |
| private static Float referenceTryParse(String input) { |
| if (input.trim().length() < input.length()) { |
| return null; |
| } |
| try { |
| return Float.valueOf(input); |
| } catch (NumberFormatException e) { |
| return null; |
| } |
| } |
| |
| @GwtIncompatible // Floats.tryParse |
| private static void checkTryParse(String input) { |
| assertEquals(referenceTryParse(input), Floats.tryParse(input)); |
| } |
| |
| @GwtIncompatible // Floats.tryParse |
| private static void checkTryParse(float expected, String input) { |
| assertEquals(Float.valueOf(expected), Floats.tryParse(input)); |
| } |
| |
| @GwtIncompatible // Floats.tryParse |
| public void testTryParseHex() { |
| for (String signChar : ImmutableList.of("", "+", "-")) { |
| for (String hexPrefix : ImmutableList.of("0x", "0X")) { |
| for (String iPart : ImmutableList.of("", "0", "1", "F", "f", "c4", "CE")) { |
| for (String fPart : ImmutableList.of("", ".", ".F", ".52", ".a")) { |
| for (String expMarker : ImmutableList.of("p", "P")) { |
| for (String exponent : ImmutableList.of("0", "-5", "+20", "52")) { |
| for (String typePart : ImmutableList.of("", "D", "F", "d", "f")) { |
| checkTryParse( |
| signChar + hexPrefix + iPart + fPart + expMarker + exponent + typePart); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| @AndroidIncompatible // slow |
| @GwtIncompatible // Floats.tryParse |
| public void testTryParseAllCodePoints() { |
| // Exercise non-ASCII digit test cases and the like. |
| char[] tmp = new char[2]; |
| for (int i = Character.MIN_CODE_POINT; i < Character.MAX_CODE_POINT; i++) { |
| Character.toChars(i, tmp, 0); |
| checkTryParse(String.copyValueOf(tmp, 0, Character.charCount(i))); |
| } |
| } |
| |
| @GwtIncompatible // Floats.tryParse |
| public void testTryParseOfToStringIsOriginal() { |
| for (float f : NUMBERS) { |
| checkTryParse(f, Float.toString(f)); |
| } |
| } |
| |
| @GwtIncompatible // Floats.tryParse |
| public void testTryParseOfToHexStringIsOriginal() { |
| for (float f : NUMBERS) { |
| checkTryParse(f, Float.toHexString(f)); |
| } |
| } |
| |
| @GwtIncompatible // Floats.tryParse |
| public void testTryParseNaN() { |
| checkTryParse("NaN"); |
| checkTryParse("+NaN"); |
| checkTryParse("-NaN"); |
| } |
| |
| @GwtIncompatible // Floats.tryParse |
| public void testTryParseInfinity() { |
| checkTryParse(Float.POSITIVE_INFINITY, "Infinity"); |
| checkTryParse(Float.POSITIVE_INFINITY, "+Infinity"); |
| checkTryParse(Float.NEGATIVE_INFINITY, "-Infinity"); |
| } |
| |
| private static final String[] BAD_TRY_PARSE_INPUTS = { |
| "", |
| "+-", |
| "+-0", |
| " 5", |
| "32 ", |
| " 55 ", |
| "infinity", |
| "POSITIVE_INFINITY", |
| "0x9A", |
| "0x9A.bE-5", |
| ".", |
| ".e5", |
| "NaNd", |
| "InfinityF" |
| }; |
| |
| @GwtIncompatible // Floats.tryParse |
| public void testTryParseFailures() { |
| for (String badInput : BAD_TRY_PARSE_INPUTS) { |
| assertEquals(referenceTryParse(badInput), Floats.tryParse(badInput)); |
| assertNull(Floats.tryParse(badInput)); |
| } |
| } |
| |
| @GwtIncompatible // NullPointerTester |
| public void testNulls() { |
| new NullPointerTester().testAllPublicStaticMethods(Floats.class); |
| } |
| |
| @GwtIncompatible // Float.toString returns different value in GWT. |
| public void testStringConverter_convert() { |
| Converter<String, Float> converter = Floats.stringConverter(); |
| assertEquals((Float) 1.0f, converter.convert("1.0")); |
| assertEquals((Float) 0.0f, converter.convert("0.0")); |
| assertEquals((Float) (-1.0f), converter.convert("-1.0")); |
| assertEquals((Float) 1.0f, converter.convert("1")); |
| assertEquals((Float) 0.0f, converter.convert("0")); |
| assertEquals((Float) (-1.0f), converter.convert("-1")); |
| assertEquals((Float) 1e6f, converter.convert("1e6")); |
| assertEquals((Float) 1e-6f, converter.convert("1e-6")); |
| } |
| |
| public void testStringConverter_convertError() { |
| try { |
| Floats.stringConverter().convert("notanumber"); |
| fail(); |
| } catch (NumberFormatException expected) { |
| } |
| } |
| |
| public void testStringConverter_nullConversions() { |
| assertNull(Floats.stringConverter().convert(null)); |
| assertNull(Floats.stringConverter().reverse().convert(null)); |
| } |
| |
| @GwtIncompatible // Float.toString returns different value in GWT. |
| public void testStringConverter_reverse() { |
| Converter<String, Float> converter = Floats.stringConverter(); |
| assertEquals("1.0", converter.reverse().convert(1.0f)); |
| assertEquals("0.0", converter.reverse().convert(0.0f)); |
| assertEquals("-1.0", converter.reverse().convert(-1.0f)); |
| assertEquals("1000000.0", converter.reverse().convert(1e6f)); |
| assertEquals("1.0E-6", converter.reverse().convert(1e-6f)); |
| } |
| |
| @GwtIncompatible // NullPointerTester |
| public void testStringConverter_nullPointerTester() throws Exception { |
| NullPointerTester tester = new NullPointerTester(); |
| tester.testAllPublicInstanceMethods(Floats.stringConverter()); |
| } |
| |
| @GwtIncompatible |
| public void testTryParse_withNullNoGwt() { |
| assertNull(Floats.tryParse("null")); |
| try { |
| Floats.tryParse(null); |
| fail("Expected NPE"); |
| } catch (NullPointerException expected) { |
| } |
| } |
| } |
