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testing/__tests__/18_font_family_inheritance_tests.lua

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+local lu = require("testing.luaunit")
+require("testing.loveStub")
+local FlexLove = require("FlexLove")
+
+TestFontFamilyInheritance = {}
+
+function TestFontFamilyInheritance:setUp()
+  FlexLove.Gui.destroy()
+  FlexLove.Gui.init({ baseScale = { width = 1920, height = 1080 } })
+end
+
+function TestFontFamilyInheritance:tearDown()
+  FlexLove.Gui.destroy()
+end
+
+function TestFontFamilyInheritance:testBasicInheritanceFromParent()
+  local parent = FlexLove.Element.new({
+    width = 200,
+    height = 200,
+    fontFamily = "Arial",
+  })
+
+  local child = FlexLove.Element.new({
+    parent = parent,
+    width = 100,
+    height = 100,
+    text = "Child",
+  })
+
+  lu.assertEquals(child.fontFamily, "Arial", "Child should inherit fontFamily from parent")
+end
+
+function TestFontFamilyInheritance:testInheritanceThroughMultipleLevels()
+  local grandparent = FlexLove.Element.new({
+    width = 300,
+    height = 300,
+    fontFamily = "Times",
+  })
+
+  local parent = FlexLove.Element.new({
+    parent = grandparent,
+    width = 200,
+    height = 200,
+  })
+
+  local child = FlexLove.Element.new({
+    parent = parent,
+    width = 100,
+    height = 100,
+    text = "Grandchild",
+  })
+
+  lu.assertEquals(parent.fontFamily, "Times", "Parent should inherit fontFamily from grandparent")
+  lu.assertEquals(child.fontFamily, "Times", "Child should inherit fontFamily through parent")
+end
+
+function TestFontFamilyInheritance:testExplicitOverrideBreaksInheritance()
+  local parent = FlexLove.Element.new({
+    width = 200,
+    height = 200,
+    fontFamily = "Arial",
+  })
+
+  local child = FlexLove.Element.new({
+    parent = parent,
+    width = 100,
+    height = 100,
+    text = "Child",
+    fontFamily = "Helvetica",
+  })
+
+  lu.assertEquals(child.fontFamily, "Helvetica", "Child's explicit fontFamily should override parent's")
+end
+
+function TestFontFamilyInheritance:testInheritanceWithNoParentFontFamily()
+  local parent = FlexLove.Element.new({
+    width = 200,
+    height = 200,
+  })
+
+  local child = FlexLove.Element.new({
+    parent = parent,
+    width = 100,
+    height = 100,
+    text = "Child",
+  })
+
+  lu.assertNil(child.fontFamily, "Child should have nil fontFamily when parent doesn't have one")
+end
+
+function TestFontFamilyInheritance:testInheritanceInFlexContainer()
+  local flexParent = FlexLove.Element.new({
+    width = 300,
+    height = 300,
+    positioning = FlexLove.Positioning.FLEX,
+    flexDirection = FlexLove.FlexDirection.HORIZONTAL,
+    fontFamily = "Courier",
+  })
+
+  local child1 = FlexLove.Element.new({
+    parent = flexParent,
+    width = 100,
+    height = 100,
+    text = "Child 1",
+  })
+
+  local child2 = FlexLove.Element.new({
+    parent = flexParent,
+    width = 100,
+    height = 100,
+    text = "Child 2",
+  })
+
+  lu.assertEquals(child1.fontFamily, "Courier", "Child 1 should inherit fontFamily in flex container")
+  lu.assertEquals(child2.fontFamily, "Courier", "Child 2 should inherit fontFamily in flex container")
+end
+
+function TestFontFamilyInheritance:testInheritanceInGridContainer()
+  local gridParent = FlexLove.Element.new({
+    width = 300,
+    height = 300,
+    positioning = FlexLove.Positioning.GRID,
+    gridRows = 2,
+    gridColumns = 2,
+    fontFamily = "Verdana",
+  })
+
+  local child1 = FlexLove.Element.new({
+    parent = gridParent,
+    text = "Cell 1",
+  })
+
+  local child2 = FlexLove.Element.new({
+    parent = gridParent,
+    text = "Cell 2",
+  })
+
+  lu.assertEquals(child1.fontFamily, "Verdana", "Child 1 should inherit fontFamily in grid container")
+  lu.assertEquals(child2.fontFamily, "Verdana", "Child 2 should inherit fontFamily in grid container")
+end
+
+function TestFontFamilyInheritance:testMixedInheritanceAndOverride()
+  local grandparent = FlexLove.Element.new({
+    width = 400,
+    height = 400,
+    fontFamily = "Georgia",
+  })
+
+  local parent = FlexLove.Element.new({
+    parent = grandparent,
+    width = 300,
+    height = 300,
+  })
+
+  local child1 = FlexLove.Element.new({
+    parent = parent,
+    width = 100,
+    height = 100,
+    text = "Child 1",
+  })
+
+  local child2 = FlexLove.Element.new({
+    parent = parent,
+    width = 100,
+    height = 100,
+    text = "Child 2",
+    fontFamily = "Impact",
+  })
+
+  lu.assertEquals(parent.fontFamily, "Georgia", "Parent should inherit from grandparent")
+  lu.assertEquals(child1.fontFamily, "Georgia", "Child 1 should inherit through parent")
+  lu.assertEquals(child2.fontFamily, "Impact", "Child 2 should use explicit fontFamily")
+end
+
+function TestFontFamilyInheritance:testInheritanceWithAbsolutePositioning()
+  local parent = FlexLove.Element.new({
+    width = 200,
+    height = 200,
+    fontFamily = "Comic Sans",
+  })
+
+  local child = FlexLove.Element.new({
+    parent = parent,
+    positioning = FlexLove.Positioning.ABSOLUTE,
+    x = 50,
+    y = 50,
+    width = 100,
+    height = 100,
+    text = "Absolute Child",
+  })
+
+  lu.assertEquals(child.fontFamily, "Comic Sans", "Absolutely positioned child should still inherit fontFamily")
+end
+
+function TestFontFamilyInheritance:testInheritanceDoesNotAffectSiblings()
+  local parent = FlexLove.Element.new({
+    width = 300,
+    height = 300,
+    fontFamily = "Tahoma",
+  })
+
+  local child1 = FlexLove.Element.new({
+    parent = parent,
+    width = 100,
+    height = 100,
+    text = "Child 1",
+    fontFamily = "Trebuchet",
+  })
+
+  local child2 = FlexLove.Element.new({
+    parent = parent,
+    width = 100,
+    height = 100,
+    text = "Child 2",
+  })
+
+  lu.assertEquals(child1.fontFamily, "Trebuchet", "Child 1 should have its own fontFamily")
+  lu.assertEquals(child2.fontFamily, "Tahoma", "Child 2 should inherit parent's fontFamily")
+  lu.assertNotEquals(child2.fontFamily, child1.fontFamily, "Siblings should have independent fontFamily values")
+end
+
+return TestFontFamilyInheritance