2 files changed, 94 insertions, 0 deletions
diff --git a/test/pdf-sync.ert b/test/pdf-sync.ert
new file mode 100644
index 0000000..544f99b
--- /dev/null
+++ b/test/pdf-sync.ert
@@ -0,0 +1,50 @@
+
+
+;; * ================================================================== *
+;; * Tests for pdf-sync.el
+;; * ================================================================== *
+
+(require 'ert)
+(require 'pdf-sync)
+
+(ert-deftest pdf-sync-backward--source-strip-comments ()
+  (should-not (cl-remove-if
+               (lambda (ch)
+                 (memq ch '(?\\ ?\s ?\n)))
+               (append (pdf-sync-backward--source-strip-comments
+                        (concat "%comment\n"
+                                "     %comment\n"
+                                "\\\\%comment\n"
+                                "\\\\   %comment\n"
+                                "      \\\\   %comment\n"
+                                "      \\\\%comment\n"))
+                       nil)))
+  (let ((source (concat "\\%comment\n"
+                        "     \\%comment\n"
+                        "\\   %comment\n"
+                        "      \\   %comment\n"
+                        "      \\%comment\n")))
+    (should (equal (pdf-sync-backward--source-strip-comments source)
+                   source))))
+
+(ert-deftest pdf-sync-backward--get-text-context ()
+  (pdf-test-with-test-pdf
+    (should (= 3 (length (pdf-sync-backward--get-text-context 1 0.5 0.25))))
+    ;; Empty page
+    (should (equal '(-1 0 nil)
+                   (pdf-sync-backward--get-text-context 6 0.5 0.5)))))
+
+(ert-deftest pdf-sync-backward--get-source-context ()
+  (with-temp-buffer
+    (should-not (pdf-sync-backward--get-source-context))
+    (insert "\\begin{foo}\nsource\n\\end{foo}")
+    (should (cl-every 'stringp (pdf-sync-backward--get-source-context)))))
+
+(ert-deftest pdf-sync-backward--find-position ()
+  (let ((context '(3 2 ("000" "1111" "222222" "333333" "4444" "55555")))
+        (prefix "000 XXXX 222222 YYYY 333")
+        (suffix "333 4444 XXXX"))
+    (with-temp-buffer
+      (insert prefix suffix)
+      (should (progn (pdf-sync-backward--find-position 1 -1 context)
+                     (eq (length prefix) (point)))))))
diff --git a/test/pdf-util.ert b/test/pdf-util.ert
new file mode 100644
index 0000000..2136e45
--- /dev/null
+++ b/test/pdf-util.ert
@@ -0,0 +1,44 @@
+
+
+;; * ================================================================== *
+;; * Tests for pdf-util.el
+;; * ================================================================== *
+
+(require 'ert)
+
+(ert-deftest pdf-util-seq-alignment ()
+  (let ((s1 '(?a ?b ?c))
+        (s2 '(?a ?b ?c ?d))
+        (s3 '(-1 ?a ?b ?c))
+        (s4 '(?e ?f ?g))
+        (s5 '(?A ?B ?C))
+        (s6 '(?b)))
+    (should (equal '(2 . ((?a . ?a) (?b . ?b) (?c . ?c) (nil . ?d)))
+                   (pdf-util-seq-alignment s1 s2)))
+
+    (should (equal '(3 . ((?a . ?a) (?b . ?b) (?c . ?c) (nil . ?d)))
+                   (pdf-util-seq-alignment s1 s2 nil 'prefix)))
+
+    (should (equal '(3 . ((nil . -1) (?a . ?a) (?b . ?b) (?c . ?c)))
+                   (pdf-util-seq-alignment s1 s3 nil 'suffix)))
+
+    (should (equal '(3 . ((nil . -1) (?a . ?a) (?b . ?b) (?c . ?c)))
+                   (pdf-util-seq-alignment s1 s3 nil 'infix)))
+
+    (should (equal '(1 . ((nil . ?a) (?b . ?b) (nil . ?c)))
+                   (pdf-util-seq-alignment s6 s1 nil 'infix)))
+    
+    (should (equal '(-3 . ((?a . ?e) (?b . ?f) (?c . ?g)))
+                   (pdf-util-seq-alignment s1 s4 nil)))
+
+    (should (equal '(3 . ((?a . ?e) (?b . ?f) (?c . ?g)))
+                   (pdf-util-seq-alignment
+                    s1 s4 (lambda (a b) 1))))
+    (should (equal '(3 . ((?A . ?a) (?B . ?b) (?C  . ?c)))
+                   (pdf-util-seq-alignment
+                    s5 s1 (lambda (a b)
+                            (if (equal (downcase a)
+                                       (downcase b))
+                                1
+                              -1)))))))
+