Add coverage for colors (extended) (#385)

src/ftxui/dom/border_test.cpp

@@ -89,6 +89,16 @@ TEST(BorderTest, WithPixel) {
             "ooooo");
 }
 
+TEST(BorderTest, Window) {
+  auto element = window(text("title"), text("content"));
+  Screen screen(10, 3);
+  Render(screen, element);
+  EXPECT_EQ(screen.ToString(),
+            "╭title───╮\r\n"
+            "│content │\r\n"
+            "╰────────╯");
+}
+
 } // namespace ftxui
 
 // Copyright 2022 Arthur Sonzogni. All rights reserved.

src/ftxui/dom/canvas_test.cpp

@@ -0,0 +1,56 @@
+#include <gtest/gtest-message.h>  // for Message
+#include <gtest/gtest-test-part.h>  // for SuiteApiResolver, TestFactoryImpl, TestPartResult
+#include "gtest/gtest_pred_impl.h"       // for Test, EXPECT_EQ, TEST
+#include <string>                   // for allocator
+#include "ftxui/dom/elements.hpp"        // for text, flexbox
+#include "ftxui/screen/screen.hpp"       // for Screen
+
+namespace ftxui {
+
+namespace {
+int Hash(const std::string s) {
+  int hash = 0;
+  for (auto c : s) {
+    hash += c;
+  }
+  return hash;
+}
+}
+
+TEST(BorderTest, GoldPoint) {
+  Terminal::SetColorSupport(Terminal::Color::TrueColor);
+  auto element = canvas([](Canvas& c) {  //
+    c.DrawPoint(3, 3, 1, Color::Red);
+    c.DrawPointToggle(2, 8);
+    c.DrawPointLine(3, 7, 10, 19, Color::Blue);
+    c.DrawPointCircle(10, 5, 3, Color::Yellow);
+    c.DrawPointCircleFilled(20, 5, 3, Color::Green);
+    c.DrawPointEllipse(10, 10, 5, 2, Color::Blue);
+    c.DrawPointEllipseFilled(10, 20, 5, 2, Color::DarkGreen);
+  });
+  Screen screen(30, 10);
+  Render(screen, element);
+  EXPECT_EQ(Hash(screen.ToString()), 17651);
+}
+
+TEST(BorderTest, GoldBlock) {
+  Terminal::SetColorSupport(Terminal::Color::TrueColor);
+  auto element = canvas([](Canvas& c) {  //
+    c.DrawBlock(3, 3, 1, Color::Red);
+    c.DrawBlockToggle(2, 8);
+    c.DrawBlockLine(3, 7, 10, 19, Color::Blue);
+    c.DrawBlockCircle(10, 5, 3, Color::Yellow);
+    c.DrawBlockCircleFilled(20, 5, 3, Color::Green);
+    c.DrawBlockEllipse(10, 10, 5, 2, Color::Blue);
+    c.DrawBlockEllipseFilled(10, 20, 5, 2, Color::DarkGreen);
+  });
+  Screen screen(30, 10);
+  Render(screen, element);
+  EXPECT_EQ(Hash(screen.ToString()), 14383);
+}
+
+} // namespace ftxui
+
+// Copyright 2022 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.