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165 lines
7.9 KiB
EmacsLisp
165 lines
7.9 KiB
EmacsLisp
;;; ebox-layer-tests.el --- Box composition contracts -*- lexical-binding: t; -*-
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(require 'ert)
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(require 'ebox)
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(defun ebox-layer-test--render (form)
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"Render FORM through the public canonical boundary."
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(ebox-render (ebox-build form)))
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(ert-deftest ebox-layer-minimal-opaque-overlap ()
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(let ((output
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(ebox-layer-test--render
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'(box :width (ch 10) :height (lh 3)
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(box "abcdefghij\nABCDEFGHIJ\n0123456789")
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(box :position absolute :left (ch 2) :top (lh 1)
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:width (ch 4) :height (lh 1) :background-color "red"
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"TOP")))))
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(should (equal (substring-no-properties output)
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"abcdefghij\nABTOP GHIJ\n0123456789"))
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(should (= (length (ebox-string-lines output)) 3))))
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(ert-deftest ebox-layer-relative-reserves-flow-slot ()
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(let ((lines
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(ebox-string-lines
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(ebox-layer-test--render
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'(column :width (ch 10) :height (lh 3)
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(box :position relative :left (ch 2) :top (lh 1)
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:z-index 1 :width (ch 4) "MOVE")
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(box "abcdefghij")
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(box "0123456789"))))))
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(should (= (length lines) 3))
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(should-not (string-match-p "MOVE" (car lines)))
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(should (equal (substring-no-properties (cadr lines)) "abMOVEghij"))
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(should (equal (substring-no-properties (nth 2 lines)) "0123456789"))))
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(ert-deftest ebox-layer-negative-z-stays-below-normal-content ()
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(let ((output (ebox-layer-test--render
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'(box :width (ch 6) :height (lh 1)
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(box "BOTTOM")
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(box :position absolute :width (ch 6) :z-index -1 "HIDDEN")))))
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(should (equal (substring-no-properties output) "BOTTOM"))))
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(ert-deftest ebox-layer-nested-isolation-orders-groups ()
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(let ((output (ebox-layer-test--render
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'(box :width (ch 6) :height (lh 1)
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(box
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(box "BOTTOM")
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(box :position absolute :width (ch 6)
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:z-index 100 "INSIDE"))
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(box :position absolute :width (ch 6) :z-index 1 "FRONT!")))))
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(should (equal (substring-no-properties output) "FRONT!"))))
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(ert-deftest ebox-layer-root-projection-escapes-local-clipping ()
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(let ((output (ebox-layer-test--render
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'(box :width (ch 10) :height (lh 3)
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(box :height (lh 1) :overflow hidden
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(box :id trigger "BUTTON")
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(box :position absolute :layer root :anchor trigger
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:width (ch 4) :height (lh 1) "MENU"))
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(box "abcdefghij\n0123456789")))))
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(should (equal (substring-no-properties output)
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"BUTTON \nMENUefghij\n0123456789"))))
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(ert-deftest ebox-layer-missing-anchor-does-not-paint ()
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(let ((output (ebox-layer-test--render
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'(box :width (ch 6) :height (lh 1)
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(box "BOTTOM")
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(box :position absolute :anchor missing
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:width (ch 6) "HIDDEN")))))
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(should (equal (substring-no-properties output) "BOTTOM"))))
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(ert-deftest ebox-layer-hidden-upper-reveals-base ()
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(let ((output (ebox-layer-test--render
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'(box :width (ch 6) :height (lh 1)
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(box "LATEST")
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(box :position absolute :visibility hidden
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:width (ch 6) "HIDDEN")))))
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(should (equal (substring-no-properties output) "LATEST"))))
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(ert-deftest ebox-layer-max-content-row-paints-positioned-descendants ()
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(let ((output (ebox-layer-test--render
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'(row :width max-content
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(box :width (ch 4) :height (lh 1)
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(box "ABCD")
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(box :position absolute :left (ch 1)
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:width (ch 2) "XX"))))))
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(should (equal (substring-no-properties output) "AXXD"))))
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(ert-deftest ebox-layer-anchor-dependency-resolves-before-paint-order ()
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(let ((output (ebox-layer-test--render
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'(box :width (ch 10) :height (lh 4)
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(box "0123456789\nabcdefghij\nABCDEFGHIJ\n0123456789")
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(box :position absolute :anchor parent-panel :width (ch 4)
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:z-index 2 "MENU")
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(box :id parent-panel :position absolute :left (ch 2)
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:top (lh 1) :width (ch 4) :z-index 1 "BASE")))))
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(should (equal (substring-no-properties output)
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"0123456789\nabBASEghij\nABMENUGHIJ\n0123456789"))))
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(ert-deftest ebox-layer-anchor-cycles-are-rejected ()
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(should-error
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(ebox-layer-test--render
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'(box :width (ch 10) :height (lh 4)
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(box :id a :position absolute :anchor b "A")
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(box :id b :position absolute :anchor a "B")))))
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(ert-deftest ebox-layer-absolute-margins-do-not-cover-underlay ()
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(let ((output (ebox-layer-test--render
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'(box :width (ch 8) :height (lh 3)
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(box "abcdefgh\nABCDEFGH\n01234567")
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(box :position absolute :width (ch 4) :height (lh 1)
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:margin ((lh 1) (ch 1)) :background-color "red"
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"TOP!")))))
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(should (equal (substring-no-properties output)
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"abcdefgh\nATOP!FGH\n01234567"))))
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(ert-deftest ebox-layer-absolute-keeps-all-flow-layout-sizes ()
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(dolist (tag '(box row column flex grid))
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(let* ((form `(,tag :width (ch 8)
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(box :width (ch 8) :height (lh 1) "abcdefgh")
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(box :position absolute :left (ch 2)
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:width (ch 2) :height (lh 9) "XX")))
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(output (ebox-layer-test--render form)))
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(ert-info ((format "Layout %s" tag))
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(should (= (length (ebox-string-lines output)) 1))
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(should (equal (substring-no-properties output) "abXXefgh"))))))
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(ert-deftest ebox-layer-root-projection-inside-an-absolute-panel ()
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(let ((output (ebox-layer-test--render
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'(box :width (ch 10) :height (lh 4)
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(box "0123456789\nabcdefghij\nABCDEFGHIJ\n0123456789")
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(box :position absolute :left (ch 2) :top (lh 1)
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:width (ch 4) :height (lh 1)
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(box :id trigger "BASE")
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(box :position absolute :layer root :anchor trigger
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:width (ch 4) :height (lh 1) "MENU"))))))
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(should (equal (substring-no-properties output)
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"0123456789\nabBASEghij\nABMENUGHIJ\n0123456789"))))
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(ert-deftest ebox-layer-native-to-layer-transition-keeps-composition ()
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(skip-unless (and (fboundp 'ebox-native-reflow-layout-ready-p)
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(ebox-native-reflow-layout-ready-p)))
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(let ((ebox-viewport-width 80) (ebox-viewport-height 10)
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(ebox-runtime-idle-prewarm nil)
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(ebox-runtime-idle-reflow-cache-prewarm nil))
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(with-temp-buffer
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(ebox-render-to-buffer
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(current-buffer)
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(ebox-build '(column :width (px 8) :height (lh 2)
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(box :id "lower" :width (px 8) :height (lh 1) "LOWER001")
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(box :id "upper" :width (px 8) :height (lh 1) "UPPER001"))))
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(should (eq (plist-get (ebox--buffer-render-state (current-buffer))
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:projection-kind) 'native-frame))
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(should (ebox-region-update "upper" :position 'absolute))
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(should (plist-get (ebox--buffer-render-state (current-buffer)) :layered-p))
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(should-not (string-match-p "LOWER001" (buffer-string)))
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(should (string-match-p "UPPER001" (buffer-string)))
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(ebox-region-update "lower" :content "LOWER002")
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(ebox-region-update "upper" :visibility 'hidden)
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(should (string-match-p "LOWER002" (buffer-string)))
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(should-not (string-match-p "UPPER001" (buffer-string))))))
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(provide 'ebox-layer-tests)
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;;; ebox-layer-tests.el ends here
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