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#include <gtest/gtest.h>
#include <QDebug>
#include "util/movinginterquartilemean.h"
namespace {
// This is the current lowest error that lets the class pass
// tests doubles7 and doubles9.
const double kMaxAcceptedError = 0.5e-6;
class MovingInterquartileMeanTest : public ::testing::Test {};
TEST_F(MovingInterquartileMeanTest, zeros1) {
MovingInterquartileMean iqm(1);
double mean;
for (int i = 1; i <= 50; ++i) {
mean = iqm.insert(0);
EXPECT_DOUBLE_EQ(0, mean) << "Iteration i=" << i;
}
iqm.insert(-4);
mean = iqm.mean();
EXPECT_DOUBLE_EQ(-4, mean);
}
TEST_F(MovingInterquartileMeanTest, zeros2) {
MovingInterquartileMean iqm(2);
double mean = iqm.insert(0);
EXPECT_DOUBLE_EQ(0, mean);
for (int i = 1; i <= 50; ++i) {
mean = iqm.insert(0);
EXPECT_DOUBLE_EQ(0, mean) << "Iteration i=" << i;
}
iqm.insert(-4);
mean = iqm.mean();
EXPECT_DOUBLE_EQ(-2, mean);
}
TEST_F(MovingInterquartileMeanTest, integers1) {
MovingInterquartileMean iqm(1);
double mean;
for (int i = 1; i <= 50; ++i) {
mean = iqm.insert(i);
EXPECT_DOUBLE_EQ(i, mean) << "Iteration i=" << i;
}
iqm.insert(-4);
mean = iqm.mean();
EXPECT_DOUBLE_EQ(-4, mean);
}
TEST_F(MovingInterquartileMeanTest, integers2) {
MovingInterquartileMean iqm(2);
double mean = iqm.insert(0);
EXPECT_DOUBLE_EQ(0, mean);
for (int i = 1; i <= 50; ++i) {
mean = iqm.insert(i);
EXPECT_DOUBLE_EQ((2*i-1)/2.0, mean) << "Iteration i=" <<i;
}
iqm.insert(-4);
mean = iqm.mean();
EXPECT_DOUBLE_EQ(23, mean);
}
TEST_F(MovingInterquartileMeanTest, integers9) {
MovingInterquartileMean iqm(9);
for (int i = 0; i <= 50; ++i) {
double mean = iqm.insert(i);
double expected = 0;
int j;
for (j = i; j >= 0 && j >= i - 8; --j) {
expected += j;
}
expected /= i - j;
EXPECT_DOUBLE_EQ(expected, mean) << "Iteration i=" << i;
}
}
TEST_F(MovingInterquartileMeanTest, doubles7) {
// TODO(Ferran Pujol): Correctly rewrite all means[i]
// with the same number of significant figures.
MovingInterquartileMean iqm(7);
double input[9] = { 16.345, 2.129674, 77, -40.23, 12071, -12071,
-15, 0, 1};
double means[9] = { 16.345, 9.237337, 31.8248913333, 13.8111685,
30.2769022, 12.286558, 3.6191925714,
-1.0508074285, -1.3735714285};
for (int i = 0; i < 9; ++i) {
double mean = iqm.insert(input[i]);
//TODO(Ferran Pujol): Why does EXPECT_DOUBLE_EQ fail here?
EXPECT_NEAR(means[i], mean, kMaxAcceptedError) << "Iteration i=" << i;
}
}
TEST_F(MovingInterquartileMeanTest, doubles9) {
MovingInterquartileMean iqm(9);
double input[15] = { 0.0000567345, 1547.12, 2.12655, 2.12687,
-1.12354, -0.988888, 0.759845, 0.325784,
-0.00345781, 2.54123, 0.0000001, -0.845548,
1.00574, 0.234511, 0.00444412};
double means[15] = { 0.0000567345, 773.560028367, 516.415535578,
387.843369184, 1.48869802035, 0.898532444833,
0.905984867, 0.803058933625, 0.595112194889,
1.06771958722, 0.595099609444, 0.0573442311111,
0.0573442311111, 0.250574553889, 0.252138432222};
for (int i = 0; i < 15; ++i) {
double mean = iqm.insert(input[i]);
//TODO(Ferran Pujol): Why does EXPECT_DOUBLE_EQ fail here?
EXPECT_NEAR(means[i], mean, kMaxAcceptedError) << "Iteration i=" << i;
}
}
} // namespace
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