moved hist location

src/hist/PixelHistogramImpl.test.cpp

@@ -0,0 +1,45 @@
+#include <catch2/catch_test_macros.hpp>
+#include <catch2/matchers/catch_matchers_floating_point.hpp>
+
+#include "aare/hist/PixelHistogramImpl.hpp"
+
+TEST_CASE("PixelHistogramImpl construct a small histogram and fill with a few "
+          "values") {
+    int rows = 3;
+    int cols = 5;
+    int n_bins = 10;
+    double xmin = 0.0;
+    double xmax = 1.0;
+    aare::PixelHistogramImpl<double, int64_t> hist(rows, cols, n_bins, xmin,
+                                                   xmax);
+
+    // Check that the histogram is initialized correctly
+    REQUIRE(hist.view().shape(0) == rows);
+    REQUIRE(hist.view().shape(1) == cols);
+    REQUIRE(hist.view().shape(2) == n_bins);
+
+    auto v = hist.view();
+    for (int row = 0; row < rows; ++row) {
+        for (int col = 0; col < cols; ++col) {
+            for (int bin = 0; bin < n_bins; ++bin) {
+                REQUIRE(v(row, col, bin) == 0);
+            }
+        }
+    }
+
+    auto edges = hist.bin_edges();
+    for (int i = 0; i <= n_bins; ++i) {
+        REQUIRE_THAT(edges(i), Catch::Matchers::WithinRel(0.1 * i, 1e-12));
+    }
+
+    hist.fill(1, 1, 0.05);
+    REQUIRE(v(1, 1, 0) == 1);
+
+    hist.fill(1, 1, 0.0999);
+    REQUIRE(v(1, 1, 0) == 2);
+
+    hist.fill(1, 1, 0.1);
+    REQUIRE(
+        v(1, 1, 1) ==
+        1); // At the edge should go to the bin with the edge as the lower bound
+}