1 files changed, 130 insertions, 0 deletions
diff --git a/testfiles/src/sp-gradient-test.cpp b/testfiles/src/sp-gradient-test.cpp
new file mode 100644
index 0000000..a4dd115
--- /dev/null
+++ b/testfiles/src/sp-gradient-test.cpp
@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Unit tests migrated from cxxtest
+ *
+ * Authors:
+ *   Adrian Boguszewski
+ *
+ * Copyright (C) 2018 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <gtest/gtest.h>
+#include <doc-per-case-test.h>
+#include <src/object/sp-gradient.h>
+#include <src/attributes.h>
+#include <2geom/transforms.h>
+#include <src/xml/node.h>
+#include <src/xml/simple-document.h>
+#include <src/svg/svg.h>
+
+using namespace Inkscape;
+using namespace Inkscape::XML;
+
+class SPGradientTest: public DocPerCaseTest {
+public:
+    SPGradientTest() {
+        DocPerCaseTest::SetUpTestCase();
+        gr = new SPGradient();
+    }
+
+    ~SPGradientTest() override {
+        delete gr;
+        DocPerCaseTest::TearDownTestCase();
+    }
+
+    SPGradient *gr;
+};
+
+TEST_F(SPGradientTest, Init) {
+    ASSERT_TRUE(gr != nullptr);
+    EXPECT_TRUE(gr->gradientTransform.isIdentity());
+    EXPECT_TRUE(Geom::are_near(Geom::identity(), gr->gradientTransform));
+}
+
+TEST_F(SPGradientTest, SetGradientTransform) {
+    gr->document = _doc.get();
+
+    gr->setKeyValue(SPAttr::GRADIENTTRANSFORM, "translate(5, 8)");
+    EXPECT_TRUE(Geom::are_near(Geom::Affine(Geom::Translate(5.0, 8.0)), gr->gradientTransform));
+
+    gr->setKeyValue(SPAttr::GRADIENTTRANSFORM, "");
+    EXPECT_TRUE(Geom::are_near(Geom::identity(), gr->gradientTransform));
+
+    gr->setKeyValue(SPAttr::GRADIENTTRANSFORM, "rotate(90)");
+    EXPECT_TRUE(Geom::are_near(Geom::Affine(Geom::Rotate::from_degrees(90.0)), gr->gradientTransform));
+}
+
+TEST_F(SPGradientTest, Write) {
+    gr->document = _doc.get();
+
+    gr->setKeyValue(SPAttr::GRADIENTTRANSFORM, "matrix(0, 1, -1, 0, 0, 0)");
+    Document *xml_doc = _doc->getReprDoc();
+
+    ASSERT_TRUE(xml_doc != nullptr);
+
+    Node *repr = xml_doc->createElement("svg:radialGradient");
+    gr->updateRepr(xml_doc, repr, SP_OBJECT_WRITE_ALL);
+
+    gchar const *tr = repr->attribute("gradientTransform");
+    Geom::Affine svd;
+    bool const valid = sp_svg_transform_read(tr, &svd);
+
+    EXPECT_TRUE(valid);
+    EXPECT_TRUE(Geom::are_near(Geom::Affine(Geom::Rotate::from_degrees(90.0)), svd));
+}
+
+TEST_F(SPGradientTest, GetG2dGetGs2dSetGs2) {
+    gr->document = _doc.get();
+
+    Geom::Affine grXform(2, 1,
+                         1, 3,
+                         4, 6);
+    gr->gradientTransform = grXform;
+
+    Geom::Rect unit_rect(Geom::Point(0, 0), Geom::Point(1, 1));
+    {
+        Geom::Affine g2d(gr->get_g2d_matrix(Geom::identity(), unit_rect));
+        Geom::Affine gs2d(gr->get_gs2d_matrix(Geom::identity(), unit_rect));
+        EXPECT_TRUE(Geom::are_near(Geom::identity(), g2d));
+        EXPECT_TRUE(Geom::are_near(gs2d, gr->gradientTransform * g2d, 1e-12));
+
+        gr->set_gs2d_matrix(Geom::identity(), unit_rect, gs2d);
+        EXPECT_TRUE(Geom::are_near(gr->gradientTransform, grXform, 1e-12));
+    }
+
+    gr->gradientTransform = grXform;
+    Geom::Affine funny(2, 3,
+                       4, 5,
+                       6, 7);
+    {
+        Geom::Affine g2d(gr->get_g2d_matrix(funny, unit_rect));
+        Geom::Affine gs2d(gr->get_gs2d_matrix(funny, unit_rect));
+        EXPECT_TRUE(Geom::are_near(funny, g2d));
+        EXPECT_TRUE(Geom::are_near(gs2d, gr->gradientTransform * g2d, 1e-12));
+
+        gr->set_gs2d_matrix(funny, unit_rect, gs2d);
+        EXPECT_TRUE(Geom::are_near(gr->gradientTransform, grXform, 1e-12));
+    }
+
+    gr->gradientTransform = grXform;
+    Geom::Rect larger_rect(Geom::Point(5, 6), Geom::Point(8, 10));
+    {
+        Geom::Affine g2d(gr->get_g2d_matrix(funny, larger_rect));
+        Geom::Affine gs2d(gr->get_gs2d_matrix(funny, larger_rect));
+        EXPECT_TRUE(Geom::are_near(Geom::Affine(3, 0,
+                                                0, 4,
+                                                5, 6) * funny, g2d ));
+        EXPECT_TRUE(Geom::are_near(gs2d, gr->gradientTransform * g2d, 1e-12));
+
+        gr->set_gs2d_matrix(funny, larger_rect, gs2d);
+        EXPECT_TRUE(Geom::are_near(gr->gradientTransform, grXform, 1e-12));
+
+        gr->setKeyValue( SPAttr::GRADIENTUNITS, "userSpaceOnUse");
+        Geom::Affine user_g2d(gr->get_g2d_matrix(funny, larger_rect));
+        Geom::Affine user_gs2d(gr->get_gs2d_matrix(funny, larger_rect));
+        EXPECT_TRUE(Geom::are_near(funny, user_g2d));
+        EXPECT_TRUE(Geom::are_near(user_gs2d, gr->gradientTransform * user_g2d, 1e-12));
+    }
+}