From f2b26f57079e576b45be5d2308bf2890c5391c70 Mon Sep 17 00:00:00 2001
From: Blake Thompson <flippmoke@gmail.com>
Date: Tue, 12 May 2015 13:54:58 -0500
Subject: [PATCH] Initial commit for image unit test

---
 test/unit/imaging/image.cpp | 170 ++++++++++++++++++++++++++++++++++++
 1 file changed, 170 insertions(+)
 create mode 100644 test/unit/imaging/image.cpp

diff --git a/test/unit/imaging/image.cpp b/test/unit/imaging/image.cpp
new file mode 100644
index 000000000..873955956
--- /dev/null
+++ b/test/unit/imaging/image.cpp
@@ -0,0 +1,170 @@
+#include "catch.hpp"
+
+// mapnik
+#include <mapnik/image_any.hpp>
+#include <mapnik/color.hpp>
+#include <mapnik/image_view_any.hpp>
+#include <mapnik/image_util.hpp>
+
+TEST_CASE("image class") {
+
+SECTION("test gray8") {
+    
+    const mapnik::image_gray8 im(4,4);
+    mapnik::image_gray8 im2(im);
+    mapnik::image_gray8 im3(5,5);
+
+    CHECK(im == im);
+    CHECK_FALSE(im == im2);
+    CHECK_FALSE(im2 == im3);
+    CHECK(im < im3);
+    CHECK_FALSE(im < im2);
+    
+    // Check that width is correct
+    CHECK(im.width() == 4);
+    CHECK(im2.width() == 4);
+    
+    // Check that height is correct
+    CHECK(im.height() == 4);
+    CHECK(im2.height() == 4);
+
+    CHECK(im(0,0) == 0);
+    CHECK(im2(0,0) == 0);
+    im2(0,0) = 1;
+    CHECK(im2(0,0) == 1);
+    im2.set(2);
+    CHECK(im2(0,0) == 2);
+    CHECK(im2(1,1) == 2);
+
+    // Check that size is correct
+    CHECK(im.size() == 16);
+    CHECK(im2.size() == 16);
+    
+    // Check that row_size is correct
+    CHECK(im.row_size() == 4);
+    CHECK(im2.row_size() == 4);
+    
+    // Check that get_premultiplied is correct
+    CHECK_FALSE(im.get_premultiplied());
+    CHECK_FALSE(im2.get_premultiplied());
+
+    // Check that offset is correct
+    CHECK(im.get_offset() == 0.0);
+    CHECK(im2.get_offset() == 0.0);
+    
+    // Check that set offset works
+    im2.set_offset(2.3);
+    CHECK(im2.get_offset() == 2.3);
+    
+    // Check that scaling is correct
+    CHECK(im.get_scaling() == 1.0);
+    CHECK(im2.get_scaling() == 1.0);
+    
+    // Check that set scaling works
+    im2.set_scaling(1.1);
+    CHECK(im2.get_scaling() == 1.1);
+
+    // CHECK that image dtype is correct
+    CHECK(im.get_dtype() == mapnik::image_dtype_gray8);
+    CHECK(im2.get_dtype() == mapnik::image_dtype_gray8);
+
+    using pixel_type = mapnik::image_view_gray8::pixel_type;
+    pixel_type expected_val;
+    // Check that all data in the view is correct
+    // IM
+    expected_val = 0;
+    for (std::size_t y = 0; y < im.height(); ++y)
+    {
+        std::size_t width = im.width();
+        pixel_type const* data_1  = im.get_row(y);
+        pixel_type const* data_2  = im.get_row(y, 1);
+        for (std::size_t x = 0; x < width; ++x)
+        {
+            CHECK(*data_1 == expected_val);
+            ++data_1;
+        }
+        for (std::size_t x = 1; x < width; ++x)
+        {
+            CHECK(*data_2 == expected_val);
+            ++data_2;
+        }
+    }
+    // IM2
+    expected_val = 2;
+    for (std::size_t y = 0; y < im2.height(); ++y)
+    {
+        std::size_t width = im2.width();
+        pixel_type const* data_1  = im2.get_row(y);
+        pixel_type const* data_2  = im2.get_row(y, 1);
+        for (std::size_t x = 0; x < width; ++x)
+        {
+            CHECK(*data_1 == expected_val);
+            ++data_1;
+        }
+        for (std::size_t x = 1; x < width; ++x)
+        {
+            CHECK(*data_2 == expected_val);
+            ++data_2;
+        }
+    }
+
+} // END SECTION
+
+SECTION("image_null")
+{
+    mapnik::image_null im_null;
+/*    const mapnik::image_view_null view_null2;
+    mapnik::image_view_null view_null3(view_null2);
+    mapnik::image_view_null & view_null4 = view_null3;
+    
+    // All nulls are equal
+    CHECK(view_null == view_null4);
+    CHECK(view_null == view_null2);
+    
+    // No null is greater
+    CHECK_FALSE(view_null < view_null4);
+    CHECK_FALSE(view_null < view_null2);
+
+    // Check defaults
+    CHECK(view_null.x() == 0);
+    CHECK(view_null.y() == 0);
+    CHECK(view_null.width() == 0);
+    CHECK(view_null.height() == 0);
+    CHECK(view_null.size() == 0);
+    CHECK(view_null.row_size() == 0);
+    CHECK(view_null.get_offset() == 0.0);
+    CHECK(view_null.get_scaling() == 1.0);
+    CHECK(view_null.get_dtype() == mapnik::image_dtype_null);
+    CHECK_FALSE(view_null.get_premultiplied());
+
+    // Should throw if we try to access data.
+    REQUIRE_THROWS(view_null(0,0));
+
+    CHECK(view_null.get_row(0) == nullptr);
+    CHECK(view_null.get_row(0,0) == nullptr);
+  */  
+} // END SECTION
+
+SECTION("image any")
+{
+    /*
+    mapnik::image_view_any im_any_null;
+    CHECK(im_any_null.get_dtype() == mapnik::image_dtype_null);
+
+    mapnik::image_gray8 im(4,4);
+    mapnik::image_view_gray8 im_view(0,0,4,4,im);
+    mapnik::image_view_any im_view_any(im_view);
+
+    CHECK(im_view_any.get_dtype() == mapnik::image_dtype_gray8);
+    CHECK(im_view_any.width() == 4);
+    CHECK(im_view_any.height() == 4);
+    CHECK(im_view_any.size() == 16);
+    CHECK(im_view_any.row_size() == 4);
+    CHECK_FALSE(im_view_any.get_premultiplied());
+    CHECK(im_view_any.get_offset() == 0.0);
+    CHECK(im_view_any.get_scaling() == 1.0);
+*/
+} // END SECTION
+
+} // END TEST CASE
+