Initial project import

tools/v/vlib/gg/image_test.v

@@ -0,0 +1,85 @@
+// vtest build: !docker-ubuntu-musl // needs GL/gl.h
+import os
+import gg
+
+const vroot = @VEXEROOT
+const background_path = os.join_path(vroot, 'examples/flappylearning/assets/img/background.png')
+
+fn test_get_cached_image_idx_bounds_checking() {
+	mut ctx := gg.new_context(width: 100)
+	assert ctx.get_cached_image_by_idx(-1).ok == false
+	assert ctx.get_cached_image_by_idx(1).ok == false
+}
+
+fn test_remove_cached_image_remove_and_get() {
+	mut ctx := gg.new_context(width: 100)
+	image := gg.Image{
+		ok: true
+	}
+	idx := ctx.cache_image(image)
+	assert ctx.get_cached_image_by_idx(idx).ok == true
+	ctx.remove_cached_image_by_idx(idx)
+	assert ctx.get_cached_image_by_idx(idx).ok == false
+}
+
+fn test_remove_cached_images_by_id_keeps_other_ids_valid() {
+	mut ctx := gg.new_context(width: 100)
+	background_bytes := os.read_bytes(background_path)!
+	prev := ctx.create_image_from_byte_array(background_bytes)!
+	curr := ctx.create_image_from_byte_array(background_bytes)!
+	assert prev.id == 0
+	assert curr.id == 1
+	assert ctx.get_cached_image_by_idx(prev.id).ok == true
+	assert ctx.get_cached_image_by_idx(curr.id).ok == true
+	ctx.remove_cached_image_by_idx(prev.id)
+	ctx.remove_cached_image_by_idx(curr.id)
+	assert ctx.get_cached_image_by_idx(prev.id).ok == false
+	assert ctx.get_cached_image_by_idx(curr.id).ok == false
+}
+
+fn test_new_context_sets_borderless_window_flag() {
+	ctx := gg.new_context(
+		width:             100
+		borderless_window: true
+	)
+	assert ctx.window.borderless_window == true
+}
+
+fn test_new_context_sets_texture_filter() {
+	ctx := gg.new_context(
+		width:          100
+		texture_filter: .nearest
+	)
+	assert ctx.config.texture_filter == .nearest
+}
+
+fn test_create_image_from_byte_array_loads_rgba_pixels() {
+	mut ctx := gg.new_context(width: 100)
+	background_bytes := os.read_bytes(background_path)!
+	img := ctx.create_image_from_byte_array(background_bytes)!
+	assert img.width > 0
+	assert img.height > 0
+	assert img.nr_channels == 4
+	assert !isnil(img.data)
+	assert img.texture_filter == .linear
+	assert ctx.get_cached_image_by_idx(img.id).nr_channels == 4
+}
+
+fn test_create_image_from_byte_array_uses_context_texture_filter() {
+	mut ctx := gg.new_context(
+		width:          100
+		texture_filter: .nearest
+	)
+	background_bytes := os.read_bytes(background_path)!
+	img := ctx.create_image_from_byte_array(background_bytes)!
+	assert img.texture_filter == .nearest
+	assert ctx.get_cached_image_by_idx(img.id).texture_filter == .nearest
+}
+
+fn test_create_image_from_byte_array_with_filter_overrides_context_default() {
+	mut ctx := gg.new_context(width: 100)
+	background_bytes := os.read_bytes(background_path)!
+	img := ctx.create_image_from_byte_array(background_bytes, texture_filter: .nearest)!
+	assert img.texture_filter == .nearest
+	assert ctx.get_cached_image_by_idx(img.id).texture_filter == .nearest
+}