Package org.djunits.vecmat.storage

Class DenseDoubleDataSiTest

java.lang.Object
org.djunits.vecmat.storage.DenseDoubleDataSiTest
public class DenseDoubleDataSiTest extends Object
Unit tests for DenseDoubleDataSi.

This test class verifies the functional behavior of DenseDoubleDataSi and the default methods in the DataGridSi interface:

  • Constructors: double[], double[][], and Q[][] (SI values)
  • Accessors: rows(), cols(), get(int,int), getDataArray()
  • Default methods in DataGridSi: getRowArray(int), getColArray(int) including bounds checks
  • Copy and instantiation: copy(), instantiateNew(double[]), instantiateNew(double[],int,int)
  • Cardinality semantics, including 0.0, -0.0, NaN, and infinities
  • Equality and hash code contracts
  • All branches and all exception paths

Tests assert functional intent; if the implementation is incorrect, these tests will fail by design.
Copyright (c) 2025-2026 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See for project information https://djunits.org. The DJUNITS project is distributed under a three-clause BSD-style license.

Author:
Alexander Verbraeck (specifications); Test implementation by Copilot.

  • Constructor Details

    • DenseDoubleDataSiTest

      public DenseDoubleDataSiTest()

  • Method Details

    • testRowsColsAndGet

      @Test @DisplayName("rows/cols/get: happy path for 2x3") public void testRowsColsAndGet()
      Verify basic getters rows(), cols(), and get(int,int) on a simple 2x3 matrix.

    • testGetOutOfBounds

      @Test @DisplayName("get: index bounds checking") public void testGetOutOfBounds()
      Verify that get(int,int) throws for all out-of-bounds row/col combinations.

    • testGetRowArray

      @Test @DisplayName("DataGrid.getRowArray: happy path + bounds") public void testGetRowArray()
      Verify that DataGridSi.getRowArray(int) returns a dense copy with correct values and enforces bounds.

    • testGetColArray

      @Test @DisplayName("DataGrid.getColArray: happy path + bounds") public void testGetColArray()
      Verify that DataGridSi.getColArray(int) returns a dense copy with correct values and enforces bounds.

    • testGetDataArrayExposure

      @Test @DisplayName("getDataArray: exposes internal array (by design)") public void testGetDataArrayExposure()
      Verify exposure semantics of DenseDoubleDataSi.getDataArray() (no safe copy). Modifications through the returned array are reflected in the object, by design.

    • testCopy

      @Test @DisplayName("copy: deep copy of data and identical geometry") public void testCopy()
      Verify DenseDoubleDataSi.copy() creates a deep copy (independent backing array).

    • testInstantiateNewSameDims

      @Test @DisplayName("instantiateNew(double[]): shape preserved, backing exposed") public void testInstantiateNewSameDims()
      Verify DenseDoubleDataSi.instantiateNew(double[]) returns a new instance with same shape and exposed backing.

    • testInstantiateNewNewDims

      @Test @DisplayName("instantiateNew(double[], r, c): new shape and length checks") public void testInstantiateNewNewDims()
      Verify DenseDoubleDataSi.instantiateNew(double[], int, int) for new shape and argument validation.

    • testCardinality

      @Test @DisplayName("cardinality: zero, -zero, NaN, +/-infinity") public void testCardinality()
      Verify DenseDoubleDataSi.cardinality() semantics: counts non-zero entries (treats +/-0.0 as zero; counts NaN and infinities as non-zero).

    • testEqualsHashCode

      @Test @DisplayName("equals/hashCode: reflexive, symmetric, and data/shape sensitive") public void testEqualsHashCode()
      Verify equality and hash code contracts.

    • testCtorDoubleArrayValidationAndExposure

      @Test @DisplayName("ctor(double[], r, c): validation and exposure semantics") public void testCtorDoubleArrayValidationAndExposure()
      Verify constructor with double[] validates inputs and sets geometry and backing reference as specified (no safe copy).

    • testCtor2DArrayValidationCopyingAndOrder

      @Test @DisplayName("ctor(double[][]): validation, safe copy, row-major, ragged exact-exception") public void testCtor2DArrayValidationCopyingAndOrder()
      Verify constructor with double[][] validates inputs, performs a safe copy, and preserves row-major ordering. Additionally, assert the exact exception type for ragged rows to surface the current format-string bug.

    • testCtorQuantity2DArraySIConversion

      @Test @DisplayName("ctor(Q[][]): validation, safe copy, SI conversion, ragged exact-exception") public void testCtorQuantity2DArraySIConversion()
      Verify constructor with Q[][] validates inputs, performs a safe copy, and writes SI values; unit conversions must be respected (e.g., km to m, cm to m). Additionally, assert the exact exception type for ragged rows to surface the current format-string bug.