Merge branch '__rultor'

src/main/java/org/cactoos/list/SumOfInts.java

@@ -0,0 +1,71 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Yegor Bugayenko
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package org.cactoos.list;
+
+import java.util.Iterator;
+import org.cactoos.Scalar;
+
+/**
+ * Int total of numbers.
+ *
+ * <p>There is no thread-safety guarantee.
+ *
+ * @author Vseslav Sekorin ([email protected])
+ * @version $Id$
+ * @since 0.9
+ */
+public final class SumOfInts implements Scalar<Long> {
+
+    /**
+     * The iterable.
+     */
+    private final Iterable<Scalar<Number>> src;
+
+    /**
+     * Ctor.
+     * @param src Numbers
+     */
+    @SafeVarargs
+    public SumOfInts(final Scalar<Number>... src) {
+        this(new ArrayAsIterable<>(src));
+    }
+
+    /**
+     * Ctor.
+     * @param src The iterable
+     */
+    public SumOfInts(final Iterable<Scalar<Number>> src) {
+        this.src = src;
+    }
+
+    @Override
+    public Long value() throws Exception {
+        final Iterator<Scalar<Number>> numbers = this.src.iterator();
+        Long result =  0L;
+        while (numbers.hasNext()) {
+            result += numbers.next().value().longValue();
+        }
+        return result;
+    }
+}

src/main/java/org/cactoos/list/SumOfReals.java

@@ -0,0 +1,71 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Yegor Bugayenko
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package org.cactoos.list;
+
+import java.util.Iterator;
+import org.cactoos.Scalar;
+
+/**
+ * Real total of numbers.
+ *
+ * <p>There is no thread-safety guarantee.
+ *
+ * @author Vseslav Sekorin ([email protected])
+ * @version $Id$
+ * @since 0.9
+ */
+public final class SumOfReals implements Scalar<Double> {
+
+    /**
+     * The iterable.
+     */
+    private final Iterable<Scalar<Number>> src;
+
+    /**
+     * Ctor.
+     * @param src Numbers
+     */
+    @SafeVarargs
+    public SumOfReals(final Scalar<Number>... src) {
+        this(new ArrayAsIterable<>(src));
+    }
+
+    /**
+     * Ctor.
+     * @param src The iterable
+     */
+    public SumOfReals(final Iterable<Scalar<Number>> src) {
+        this.src = src;
+    }
+
+    @Override
+    public Double value() throws Exception {
+        final Iterator<Scalar<Number>> numbers = this.src.iterator();
+        Double result =  0.;
+        while (numbers.hasNext()) {
+            result += numbers.next().value().doubleValue();
+        }
+        return result;
+    }
+}

src/test/java/org/cactoos/list/SumOfIntsTest.java

@@ -0,0 +1,67 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Yegor Bugayenko
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package org.cactoos.list;
+
+import org.cactoos.Scalar;
+import org.hamcrest.MatcherAssert;
+import org.hamcrest.Matchers;
+import org.junit.Test;
+
+/**
+ * Test case for {@link SumOfInts}.
+ *
+ * @author Vseslav Sekorin ([email protected])
+ * @version $Id$
+ * @since 0.9
+ * @checkstyle JavadocMethodCheck (500 lines)
+ * @checkstyle MagicNumberCheck (500 lines)
+ */
+public final class SumOfIntsTest {
+
+    @Test
+    public void withVarargsCtor() throws Exception {
+        MatcherAssert.assertThat(
+            new SumOfInts(
+                () -> 1,
+                () -> 2,
+                () -> 3
+            ).value(),
+            Matchers.equalTo(6L)
+        );
+    }
+
+    @Test
+    public void withIterCtor() throws Exception {
+        MatcherAssert.assertThat(
+            new SumOfInts(
+                new ArrayAsIterable<Scalar<Number>>(
+                    () -> 7,
+                    () -> 8,
+                    () -> 10
+                )
+            ).value(),
+            Matchers.equalTo(25L)
+        );
+    }
+}

src/test/java/org/cactoos/list/SumOfRealsTest.java

@@ -0,0 +1,67 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Yegor Bugayenko
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package org.cactoos.list;
+
+import org.cactoos.Scalar;
+import org.hamcrest.MatcherAssert;
+import org.hamcrest.Matchers;
+import org.junit.Test;
+
+/**
+ * Test case for {@link SumOfReals}.
+ *
+ * @author Vseslav Sekorin ([email protected])
+ * @version $Id$
+ * @since 0.9
+ * @checkstyle JavadocMethodCheck (500 lines)
+ * @checkstyle MagicNumberCheck (500 lines)
+ */
+public final class SumOfRealsTest {
+
+    @Test
+    public void withVarargsCtor() throws Exception {
+        MatcherAssert.assertThat(
+            new SumOfReals(
+                () -> 1.2,
+                () -> 2.5,
+                () -> 3.3
+            ).value(),
+            Matchers.closeTo(7.0, 0.0)
+        );
+    }
+
+    @Test
+    public void withIterCtor() throws Exception {
+        MatcherAssert.assertThat(
+            new SumOfReals(
+                new ArrayAsIterable<Scalar<Number>>(
+                    () -> 7.1,
+                    () -> 8.1,
+                    () -> 10.1
+                )
+            ).value(),
+            Matchers.closeTo(25.0, 0.3)
+        );
+    }
+}