1 files changed, 156 insertions, 0 deletions
diff --git a/gfx/tests/gtest/TestSkipChars.cpp b/gfx/tests/gtest/TestSkipChars.cpp
new file mode 100644
index 0000000000..8f31777619
--- /dev/null
+++ b/gfx/tests/gtest/TestSkipChars.cpp
@@ -0,0 +1,156 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+
+#include "gfxSkipChars.h"
+#include "mozilla/ArrayUtils.h"
+
+static bool TestConstructor() {
+  gfxSkipChars skipChars;
+
+  EXPECT_TRUE(skipChars.GetOriginalCharCount() == 0)
+      << "[1] Make sure the gfxSkipChars was properly initialized with "
+         "constructor";
+
+  return true;
+}
+
+static bool TestLength() {
+  gfxSkipChars skipChars;
+
+  skipChars.KeepChars(100);
+
+  EXPECT_TRUE(skipChars.GetOriginalCharCount() == 100)
+      << "[1] Check length after keeping chars";
+
+  skipChars.SkipChars(50);
+
+  EXPECT_TRUE(skipChars.GetOriginalCharCount() == 150)
+      << "[2] Check length after skipping chars";
+
+  skipChars.SkipChars(50);
+
+  EXPECT_TRUE(skipChars.GetOriginalCharCount() == 200)
+      << "[3] Check length after skipping more chars";
+
+  skipChars.KeepChar();
+
+  EXPECT_TRUE(skipChars.GetOriginalCharCount() == 201)
+      << "[4] Check length after keeping a final char";
+
+  return true;
+}
+
+static bool TestIterator() {
+  // Test a gfxSkipChars that starts with kept chars
+  gfxSkipChars skipChars1;
+
+  skipChars1.KeepChars(9);
+  skipChars1.SkipChar();
+  skipChars1.KeepChars(9);
+  skipChars1.SkipChar();
+  skipChars1.KeepChars(9);
+
+  EXPECT_TRUE(skipChars1.GetOriginalCharCount() == 29) << "[1] Check length";
+
+  gfxSkipCharsIterator iter1(skipChars1);
+
+  EXPECT_TRUE(iter1.GetOriginalOffset() == 0)
+      << "[2] Check initial original offset";
+  EXPECT_TRUE(iter1.GetSkippedOffset() == 0)
+      << "[3] Check initial skipped offset";
+
+  EXPECT_TRUE(iter1.IsOriginalCharSkipped() == false)
+      << "[3a] Check IsOriginalCharSkipped for initial position";
+
+  uint32_t expectSkipped1[] = {0,  1,  2,  3,  4,  5,  6,  7,  8,  9,
+                               9,  10, 11, 12, 13, 14, 15, 16, 17, 18,
+                               18, 19, 20, 21, 22, 23, 24, 25, 26, 27};
+
+  for (uint32_t i = 0; i < mozilla::ArrayLength(expectSkipped1); i++) {
+    EXPECT_TRUE(iter1.ConvertOriginalToSkipped(i) == expectSkipped1[i])
+        << "[4] Check mapping of original to skipped for " << i;
+  }
+
+  int32_t expectOriginal1[] = {0,  1,  2,  3,  4,  5,  6,  7,  8,
+                               10, 11, 12, 13, 14, 15, 16, 17, 18,
+                               20, 21, 22, 23, 24, 25, 26, 27, 28};
+
+  for (uint32_t i = 0; i < mozilla::ArrayLength(expectOriginal1); i++) {
+    EXPECT_TRUE(iter1.ConvertSkippedToOriginal(i) == expectOriginal1[i])
+        << "[5] Check mapping of skipped to original for " << i;
+  }
+
+  bool expectIsOriginalSkipped1[] = {
+      false, false, false, false, false, false, false, false, false, true,
+      false, false, false, false, false, false, false, false, false, true,
+      false, false, false, false, false, false, false, false, false};
+
+  for (uint32_t i = 0; i < mozilla::ArrayLength(expectIsOriginalSkipped1);
+       i++) {
+    iter1.SetOriginalOffset(i);
+    EXPECT_TRUE(iter1.IsOriginalCharSkipped() == expectIsOriginalSkipped1[i])
+        << "[5.a] Check IsOriginalCharSkipped for " << i;
+  }
+
+  // Test a gfxSkipChars that starts with skipped chars
+  gfxSkipChars skipChars2;
+
+  skipChars2.SkipChars(9);
+  skipChars2.KeepChar();
+  skipChars2.SkipChars(9);
+  skipChars2.KeepChar();
+  skipChars2.SkipChars(9);
+
+  EXPECT_TRUE(skipChars2.GetOriginalCharCount() == 29) << "[6] Check length";
+
+  gfxSkipCharsIterator iter2(skipChars2);
+
+  EXPECT_TRUE(iter2.GetOriginalOffset() == 0)
+      << "[7] Check initial original offset";
+  EXPECT_TRUE(iter2.GetSkippedOffset() == 0)
+      << "[8] Check initial skipped offset";
+
+  EXPECT_TRUE(iter2.IsOriginalCharSkipped() == true)
+      << "[8a] Check IsOriginalCharSkipped for initial position";
+
+  uint32_t expectSkipped2[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
+                               1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2};
+
+  for (uint32_t i = 0; i < mozilla::ArrayLength(expectSkipped2); i++) {
+    EXPECT_TRUE(iter2.ConvertOriginalToSkipped(i) == expectSkipped2[i])
+        << "[9] Check mapping of original to skipped for " << i;
+  }
+
+  int32_t expectOriginal2[] = {9, 19, 29};
+
+  for (uint32_t i = 0; i < mozilla::ArrayLength(expectOriginal2); i++) {
+    EXPECT_TRUE(iter2.ConvertSkippedToOriginal(i) == expectOriginal2[i])
+        << "[10] Check mapping of skipped to original for " << i;
+  }
+
+  bool expectIsOriginalSkipped2[] = {
+      true, true, true, true, true, true, true, true, true, false,
+      true, true, true, true, true, true, true, true, true, false,
+      true, true, true, true, true, true, true, true, true};
+
+  for (uint32_t i = 0; i < mozilla::ArrayLength(expectIsOriginalSkipped2);
+       i++) {
+    iter2.SetOriginalOffset(i);
+    EXPECT_TRUE(iter2.IsOriginalCharSkipped() == expectIsOriginalSkipped2[i])
+        << "[10.a] Check IsOriginalCharSkipped for " << i;
+  }
+
+  return true;
+}
+
+TEST(Gfx, gfxSkipChars)
+{
+  TestConstructor();
+  TestLength();
+  TestIterator();
+}