### Question:
SumatraMath { public static double min(final double... values) { if (values.length == 0) { throw new IllegalArgumentException("No values"); } double minimum = values[0]; for (final double f : values) { if (f < minimum) { minimum = f; } } return minimum; } private  SumatraMath(); static double sqrt(final double number); static double square(final double x); static double min(final double... values); static double max(final double... values); static boolean hasDigitsAfterDecimalPoint(final double number); static boolean isEqual(final double a, final double b, final double tolerance); static boolean isEqual(final double a, final double b); static boolean isBetween(final double x, final double min, final double max); static boolean isZero(final double v); static double relative(final double value, final double from, final double to); static double cap(final double value, final double min, final double max); static List<Double> quadraticFunctionRoots(final double a, final double b, final double c); static List<Double> cubicFunctionRoots(final double a3, final double b2, final double c1, final double d0); static double getEqualTol(); static double acos(double x); static double asin(double x); static double atan2(double y, double x); static double cos(double angle); static double sin(double angle); static double tan(double angle); static List<Double> evenDistribution1D(double min, double max, int n);  }### Answer:
@Test public void testMin() { Assertions.assertThat(SumatraMath.min(1)).isEqualTo(1.0); Assertions.assertThat(SumatraMath.min(1, 2)).isEqualTo(1.0); Assertions.assertThat(SumatraMath.min(1, 2, 3)).isEqualTo(1.0); Assertions.assertThat(SumatraMath.min(3, 2, 1)).isEqualTo(1.0); Assertions.assertThat(SumatraMath.min(3, 1, 2)).isEqualTo(1.0); Assertions.assertThat(SumatraMath.min(-1, 2, 3)).isEqualTo(-1.0); Assertions.assertThat(SumatraMath.min(1, 2, -1)).isEqualTo(-1.0); }