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Added fast path to ERT explanation of `equal'.
* emacs-lisp/ert.el (ert--explain-equal): New function. (ert--explain-equal-rec): Renamed from `ert--explain-not-equal'. All callers changed. (ert--explain-equal-including-properties): Renamed from `ert--explain-not-equal-including-properties'. All callers changed. * automated/ert-tests.el (ert-test-explain-not-equal-keymaps): New test.
This commit is contained in:
Christian Ohler
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@ -1,3 +1,12 @@
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2011-03-03 Christian Ohler <ohler@gnu.org>
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* emacs-lisp/ert.el (ert--explain-equal): New function.
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(ert--explain-equal-rec): Renamed from `ert--explain-not-equal'.
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All callers changed.
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(ert--explain-equal-including-properties): Renamed from
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`ert--explain-not-equal-including-properties'. All callers
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changed.
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2011-03-03 Christian Ohler <ohler@gnu.org>
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* emacs-lisp/ert.el (ert--stats-set-test-and-result)
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@ -219,7 +219,7 @@ Emacs bug 6581 at URL `http://debbugs.gnu.org/cgi/bugreport.cgi?bug=6581'."
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;; This implementation is inefficient. Rather than making it
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;; efficient, let's hope bug 6581 gets fixed so that we can delete
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;; it altogether.
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(not (ert--explain-not-equal-including-properties a b)))
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(not (ert--explain-equal-including-properties a b)))
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;;; Defining and locating tests.
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@ -571,16 +571,15 @@ failed."
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(when (and (not firstp) (eq fast slow)) (return nil))))
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(defun ert--explain-format-atom (x)
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"Format the atom X for `ert--explain-not-equal'."
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"Format the atom X for `ert--explain-equal'."
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(typecase x
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(fixnum (list x (format "#x%x" x) (format "?%c" x)))
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(t x)))
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(defun ert--explain-not-equal (a b)
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"Explainer function for `equal'.
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(defun ert--explain-equal-rec (a b)
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"Returns a programmer-readable explanation of why A and B are not `equal'.
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Returns a programmer-readable explanation of why A and B are not
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`equal', or nil if they are."
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Returns nil if they are."
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(if (not (equal (type-of a) (type-of b)))
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`(different-types ,a ,b)
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(etypecase a
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@ -598,13 +597,13 @@ Returns a programmer-readable explanation of why A and B are not
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(loop for i from 0
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for ai in a
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for bi in b
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for xi = (ert--explain-not-equal ai bi)
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for xi = (ert--explain-equal-rec ai bi)
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do (when xi (return `(list-elt ,i ,xi)))
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finally (assert (equal a b) t)))
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(let ((car-x (ert--explain-not-equal (car a) (car b))))
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(let ((car-x (ert--explain-equal-rec (car a) (car b))))
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(if car-x
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`(car ,car-x)
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(let ((cdr-x (ert--explain-not-equal (cdr a) (cdr b))))
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(let ((cdr-x (ert--explain-equal-rec (cdr a) (cdr b))))
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(if cdr-x
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`(cdr ,cdr-x)
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(assert (equal a b) t)
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@ -618,7 +617,7 @@ Returns a programmer-readable explanation of why A and B are not
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(loop for i from 0
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for ai across a
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for bi across b
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for xi = (ert--explain-not-equal ai bi)
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for xi = (ert--explain-equal-rec ai bi)
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do (when xi (return `(array-elt ,i ,xi)))
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finally (assert (equal a b) t))))
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(atom (if (not (equal a b))
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@ -627,7 +626,15 @@ Returns a programmer-readable explanation of why A and B are not
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`(different-atoms ,(ert--explain-format-atom a)
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,(ert--explain-format-atom b)))
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nil)))))
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(put 'equal 'ert-explainer 'ert--explain-not-equal)
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(defun ert--explain-equal (a b)
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"Explainer function for `equal'."
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;; Do a quick comparison in C to avoid running our expensive
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;; comparison when possible.
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(if (equal a b)
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nil
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(ert--explain-equal-rec a b)))
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(put 'equal 'ert-explainer 'ert--explain-equal)
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(defun ert--significant-plist-keys (plist)
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"Return the keys of PLIST that have non-null values, in order."
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@ -658,8 +665,8 @@ key/value pairs in each list does not matter."
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(value-b (plist-get b key)))
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(assert (not (equal value-a value-b)) t)
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`(different-properties-for-key
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,key ,(ert--explain-not-equal-including-properties value-a
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value-b)))))
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,key ,(ert--explain-equal-including-properties value-a
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value-b)))))
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(cond (keys-in-a-not-in-b
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(explain-with-key (first keys-in-a-not-in-b)))
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(keys-in-b-not-in-a
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@ -681,13 +688,16 @@ If SUFFIXP is non-nil, returns a suffix of S, otherwise a prefix."
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(t
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(substring s 0 len)))))
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(defun ert--explain-not-equal-including-properties (a b)
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;; TODO(ohler): Once bug 6581 is fixed, rename this to
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;; `ert--explain-equal-including-properties-rec' and add a fast-path
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;; wrapper like `ert--explain-equal'.
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(defun ert--explain-equal-including-properties (a b)
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"Explainer function for `ert-equal-including-properties'.
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Returns a programmer-readable explanation of why A and B are not
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`ert-equal-including-properties', or nil if they are."
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(if (not (equal a b))
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(ert--explain-not-equal a b)
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(ert--explain-equal a b)
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(assert (stringp a) t)
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(assert (stringp b) t)
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(assert (eql (length a) (length b)) t)
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@ -713,7 +723,7 @@ Returns a programmer-readable explanation of why A and B are not
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)))
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(put 'ert-equal-including-properties
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'ert-explainer
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'ert--explain-not-equal-including-properties)
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'ert--explain-equal-including-properties)
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;;; Implementation of `ert-info'.
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@ -1,3 +1,8 @@
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2011-03-03 Christian Ohler <ohler@gnu.org>
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* automated/ert-tests.el (ert-test-explain-not-equal-keymaps):
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New test.
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2011-02-20 Ulf Jasper <ulf.jasper@web.de>
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* automated/icalendar-tests.el: Move from icalendar-testsuite.el;
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@ -796,27 +796,32 @@ This macro is used to test if macroexpansion in `should' works."
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(should (equal (ert--string-first-line "foo\nbar") "foo"))
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(should (equal (ert--string-first-line " foo\nbar\nbaz\n") " foo")))
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(ert-deftest ert-test-explain-not-equal ()
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(should (equal (ert--explain-not-equal nil 'foo)
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(ert-deftest ert-test-explain-equal ()
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(should (equal (ert--explain-equal nil 'foo)
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'(different-atoms nil foo)))
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(should (equal (ert--explain-not-equal '(a a) '(a b))
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(should (equal (ert--explain-equal '(a a) '(a b))
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'(list-elt 1 (different-atoms a b))))
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(should (equal (ert--explain-not-equal '(1 48) '(1 49))
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(should (equal (ert--explain-equal '(1 48) '(1 49))
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'(list-elt 1 (different-atoms (48 "#x30" "?0")
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(49 "#x31" "?1")))))
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(should (equal (ert--explain-not-equal 'nil '(a))
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(should (equal (ert--explain-equal 'nil '(a))
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'(different-types nil (a))))
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(should (equal (ert--explain-not-equal '(a b c) '(a b c d))
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(should (equal (ert--explain-equal '(a b c) '(a b c d))
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'(proper-lists-of-different-length 3 4 (a b c) (a b c d)
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first-mismatch-at 3)))
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(let ((sym (make-symbol "a")))
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(should (equal (ert--explain-not-equal 'a sym)
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(should (equal (ert--explain-equal 'a sym)
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`(different-symbols-with-the-same-name a ,sym)))))
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(ert-deftest ert-test-explain-not-equal-improper-list ()
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(should (equal (ert--explain-not-equal '(a . b) '(a . c))
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(ert-deftest ert-test-explain-equal-improper-list ()
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(should (equal (ert--explain-equal '(a . b) '(a . c))
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'(cdr (different-atoms b c)))))
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(ert-deftest ert-test-explain-equal-keymaps ()
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;; This used to be very slow.
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(should (equal (make-keymap) (make-keymap)))
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(should (equal (make-sparse-keymap) (make-sparse-keymap))))
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(ert-deftest ert-test-significant-plist-keys ()
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(should (equal (ert--significant-plist-keys '()) '()))
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(should (equal (ert--significant-plist-keys '(a b c d e f c g p q r nil s t))
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@ -852,21 +857,21 @@ This macro is used to test if macroexpansion in `should' works."
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(should (equal (ert--abbreviate-string "bar" 1 t) "r"))
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(should (equal (ert--abbreviate-string "bar" 0 t) "")))
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(ert-deftest ert-test-explain-not-equal-string-properties ()
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(ert-deftest ert-test-explain-equal-string-properties ()
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(should
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(equal (ert--explain-not-equal-including-properties #("foo" 0 1 (a b))
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"foo")
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(equal (ert--explain-equal-including-properties #("foo" 0 1 (a b))
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"foo")
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'(char 0 "f"
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(different-properties-for-key a (different-atoms b nil))
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context-before ""
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context-after "oo")))
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(should (equal (ert--explain-not-equal-including-properties
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(should (equal (ert--explain-equal-including-properties
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#("foo" 1 3 (a b))
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#("goo" 0 1 (c d)))
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'(array-elt 0 (different-atoms (?f "#x66" "?f")
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(?g "#x67" "?g")))))
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(should
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(equal (ert--explain-not-equal-including-properties
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(equal (ert--explain-equal-including-properties
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#("foo" 0 1 (a b c d) 1 3 (a b))
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#("foo" 0 1 (c d a b) 1 2 (a foo)))
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'(char 1 "o" (different-properties-for-key a (different-atoms b foo))
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