From 80d29b32199185c9135805bfd676ee09116e0fb2 Mon Sep 17 00:00:00 2001
From: Robert Konigsberg <konigsberg@google.com>
Date: Wed, 27 Apr 2011 17:01:15 -0400
Subject: [PATCH] Moving the delta tests to MoreAsserts. MoreAsserts is
 actually going to go away when this code goes in to jstestdriver. I don't
 suggest you ... don't look too hard at MoreAsserts, but don't look too hard.
 A proper review will be done on the jstestdriver side.

---
 auto_tests/tests/MoreAsserts.js | 117 ++++++++++++++++++++++++++++++++++++++++
 auto_tests/tests/sanity.js      |  20 +------
 2 files changed, 118 insertions(+), 19 deletions(-)
 create mode 100644 auto_tests/tests/MoreAsserts.js

diff --git a/auto_tests/tests/MoreAsserts.js b/auto_tests/tests/MoreAsserts.js
new file mode 100644
index 0000000..b2a690a
--- /dev/null
+++ b/auto_tests/tests/MoreAsserts.js
@@ -0,0 +1,117 @@
+// Copyright (c)  2011 Google, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+
+/** 
+ * @fileoverview Additional assertions.
+ *
+ * @author konigsberg@google.com (Robert Konigsberg)
+ */
+
+/**
+ * Asserts that two doubles (or two arrays of doubles) are equal
+ * to within a positive delta.
+ */
+function assertEqualsDelta(msg, expected, actual, epsilon) {
+  var args = this.argsWithOptionalMsg_(arguments, 4);
+  jstestdriver.assertCount++;
+  msg = args[0];
+  expected = args[1];
+  actual = args[2];
+  epsilon = args[3];
+
+  if (!compareDelta_(expected, actual, epsilon)) {
+    this.fail(msg + 'expected ' + epsilon + ' within ' +
+              this.prettyPrintEntity_(expected) +
+              ' but was ' + this.prettyPrintEntity_(actual) + '');
+  }
+  return true;
+};
+
+
+function compareDelta_(expected, actual, epsilon) {
+  var compareDouble = function(e,a,d) {
+    return Math.abs(e - a) <= d;
+  }
+  if (expected === actual) {
+    return true;
+  }
+
+  if (typeof expected == "number" ||
+      typeof actual == "number" ||
+      !expected || !actual) {
+    return compareDouble(expected, actual, epsilon);
+  }
+
+  if (isElement_(expected) || isElement_(actual)) {
+    return false;
+  }
+
+  var key = null;
+  var actualLength   = 0;
+  var expectedLength = 0;
+
+  try {
+    // If an array is expected the length of actual should be simple to
+    // determine. If it is not it is undefined.
+    if (jstestdriver.jQuery.isArray(actual)) {
+      actualLength = actual.length;
+    } else {
+      // In case it is an object it is a little bit more complicated to
+      // get the length.
+      for (key in actual) {
+        if (actual.hasOwnProperty(key)) {
+          ++actualLength;
+        }
+      }
+    }
+
+    // Arguments object
+    if (actualLength == 0 && typeof actual.length == "number") {
+      actualLength = actual.length;
+
+      for (var i = 0, l = actualLength; i < l; i++) {
+        if (!(i in actual)) {
+          actualLength = 0;
+          break;
+        }
+      }
+    }
+
+    for (key in expected) {
+      if (expected.hasOwnProperty(key)) {
+        if (!compareDelta_(expected[key], actual[key], epsilon)) {
+          return false;
+        }
+
+        ++expectedLength;
+      }
+    }
+
+    if (expectedLength != actualLength) {
+      return false;
+    }
+
+    return expectedLength == 0 ? expected.toString() == actual.toString() : true;
+  } catch (e) {
+    return false;
+  }
+};
+
diff --git a/auto_tests/tests/sanity.js b/auto_tests/tests/sanity.js
index cbe07b4..1a56c2d 100644
--- a/auto_tests/tests/sanity.js
+++ b/auto_tests/tests/sanity.js
@@ -83,24 +83,6 @@ SanityTestCase.prototype.testYAxisRange_custom = function() {
 };
 
 /**
- * Test when the expected and actual values are within a certain
- * range (delta). If they're exactly apart by delta, that is considered
- * acceptable.
- */
-function assertEqualsDelta(msg, expected, actual, delta) {
-  var args = this.argsWithOptionalMsg_(arguments, 4);
-
-  var message = args[0];
-  var exp = args[1];
-  var act = args[2];
-  var d = args[3];
-  if (Math.abs(exp - act) > d) {
-    fail(message +
-        " Expected to be within " + d + " of " + exp + ", got " + act);
-  }
-}
-
-/**
  * Test that valueRange matches the y-axis range specifically.
  *
  * This is based on the assumption that 20 pixels are dedicated to the
@@ -115,6 +97,6 @@ SanityTestCase.prototype.testToDomYCoord = function() {
   assertEquals(0, g.toDomYCoord(50));
   
   for (var x = 0; x <= 50; x++) {
-    assertEqualsDelta(50 - x, g.toDomYCoord(x), 0.00001);
+    MoreAsserts.assertEqualsDelta(50 - x, g.toDomYCoord(x), 0.00001);
   }
 };
-- 
2.7.4