diff --git a/core/meson.build b/core/meson.build
index 2a527f6..11a1fb6 100644
--- a/core/meson.build
+++ b/core/meson.build
@@ -27,6 +27,7 @@ core_sources = [
   'src/Data/ArrayDataIterator.cpp',
   'src/Data/VectorSeries.cpp',
   'src/Data/OptionalAxis.cpp',
+  'src/Data/DataSeriesUtils.cpp',
   'src/DataSource/DataSourceController.cpp',
   'src/DataSource/DataSourceItem.cpp',
   'src/DataSource/DataSourceItemAction.cpp',
diff --git a/core/tests/Data/TestDataSeriesUtils.cpp b/core/tests/Data/TestDataSeriesUtils.cpp
new file mode 100644
index 0000000..3e4bd90
--- /dev/null
+++ b/core/tests/Data/TestDataSeriesUtils.cpp
@@ -0,0 +1,87 @@
+#include <Data/DataSeriesUtils.h>
+
+#include <QObject>
+#include <QtTest>
+
+class TestDataSeriesUtils : public QObject {
+    Q_OBJECT
+
+private slots:
+    /// Tests @sa DataSeriesUtils::fillDataHoles() method
+    void testFillDataHoles_data();
+    void testFillDataHoles();
+};
+
+void TestDataSeriesUtils::testFillDataHoles_data()
+{
+    QTest::addColumn<std::vector<double> >("xAxisData");
+    QTest::addColumn<std::vector<double> >("valuesData");
+    QTest::addColumn<double>("resolution");
+    QTest::addColumn<double>("fillValue");
+    QTest::addColumn<std::vector<double> >(
+        "expectedXAxisData"); // expected x-axis data after filling holes
+    QTest::addColumn<std::vector<double> >(
+        "expectedValuesData"); // expected values data after filling holes
+
+    auto nan = std::numeric_limits<double>::quiet_NaN();
+
+    QTest::newRow("fillDataHoles (basic case)")
+        << std::vector<double>{0., 1., 5., 7., 14.} << std::vector<double>{0., 1., 2., 3., 4.} << 2.
+        << nan << std::vector<double>{0., 1., 3., 5., 7., 9., 11., 13., 14.}
+        << std::vector<double>{0., 1., nan, 2., 3., nan, nan, nan, 4.};
+
+    QTest::newRow("fillDataHoles (change nb components)")
+        << std::vector<double>{0., 1., 5., 7., 14.}
+        << std::vector<double>{0., 1., 2., 3., 4., 5., 6., 7., 8., 9.} << 2. << nan
+        << std::vector<double>{0., 1., 3., 5., 7., 9., 11., 13., 14.}
+        << std::vector<double>{0., 1.,  2.,  3.,  nan, nan, 4.,  5., 6.,
+                               7., nan, nan, nan, nan, nan, nan, 8., 9.};
+
+    QTest::newRow("fillDataHoles (change resolution)")
+        << std::vector<double>{0., 1., 5., 7., 14.} << std::vector<double>{0., 1., 2., 3., 4.}
+        << 1.5 << nan << std::vector<double>{0., 1., 2.5, 4., 5., 6.5, 7., 8.5, 10., 11.5, 13., 14.}
+        << std::vector<double>{0., 1., nan, nan, 2., nan, 3., nan, nan, nan, nan, 4.};
+
+    QTest::newRow("fillDataHoles (with no data (no changes made))")
+        << std::vector<double>{} << std::vector<double>{} << 2. << nan << std::vector<double>{}
+        << std::vector<double>{};
+
+    QTest::newRow("fillDataHoles (with no resolution (no changes made))")
+        << std::vector<double>{0., 1., 5., 7., 14.} << std::vector<double>{0., 1., 2., 3., 4.} << 0.
+        << nan << std::vector<double>{0., 1., 5., 7., 14.}
+        << std::vector<double>{0., 1., 2., 3., 4.};
+
+    QTest::newRow("fillDataHoles (change fill value)")
+        << std::vector<double>{0., 1., 5., 7., 14.} << std::vector<double>{0., 1., 2., 3., 4.} << 2.
+        << -1. << std::vector<double>{0., 1., 3., 5., 7., 9., 11., 13., 14.}
+        << std::vector<double>{0., 1., -1., 2., 3., -1., -1., -1., 4.};
+}
+
+void TestDataSeriesUtils::testFillDataHoles()
+{
+    QFETCH(std::vector<double>, xAxisData);
+    QFETCH(std::vector<double>, valuesData);
+    QFETCH(double, resolution);
+    QFETCH(double, fillValue);
+
+    QFETCH(std::vector<double>, expectedXAxisData);
+    QFETCH(std::vector<double>, expectedValuesData);
+
+    // Executes method (xAxisData and valuesData are modified)
+    DataSeriesUtils::fillDataHoles(xAxisData, valuesData, resolution, fillValue);
+
+    // Checks results
+    auto equal = [](const auto &data, const auto &expectedData) {
+        // Compares with NaN values
+        return std::equal(data.begin(), data.end(), expectedData.begin(), expectedData.end(),
+                          [](const auto &val, const auto &expectedVal) {
+                              return (std::isnan(val) && std::isnan(expectedVal))
+                                     || val == expectedVal;
+                          });
+    };
+    QVERIFY(equal(xAxisData, expectedXAxisData));
+    QVERIFY(equal(valuesData, expectedValuesData));
+}
+
+QTEST_MAIN(TestDataSeriesUtils)
+#include "TestDataSeriesUtils.moc"
diff --git a/core/tests/meson.build b/core/tests/meson.build
index b41a34f..8df1c87 100644
--- a/core/tests/meson.build
+++ b/core/tests/meson.build
@@ -8,6 +8,7 @@ tests = [
   [['Data/TestOneDimArrayData.cpp'],'test_1d','One Dim Array test'],
   [['Data/TestOptionalAxis.cpp'],'test_optional_axis','OptionalAxis test'],
   [['Data/TestTwoDimArrayData.cpp'],'test_2d','Two Dim Array test'],
+  [['Data/TestDataSeriesUtils.cpp'],'test_dataseries_util','Data series utils test'],
   [['DataSource/TestDataSourceController.cpp'],'test_data_source','DataSourceController test'],
   [['Variable/TestVariableCacheController.cpp'],'test_variable_cache','VariableCacheController test'],
   [['Variable/TestVariable.cpp'],'test_variable','Variable test'],