};
fail("Can't find a line drawn between " + p1 +
" and " + p2 + " with attributes " + toString(attrs));
-}
+};
+
+/**
+ * Return the lines drawn with specific attributes.
+ *
+ * This merely looks for one of these four possibilities:
+ * moveTo(p1) -> lineTo(p2)
+ * moveTo(p2) -> lineTo(p1)
+ * lineTo(p1) -> lineTo(p2)
+ * lineTo(p2) -> lineTo(p1)
+ *
+ * attrs is meant to be used when you want to track things like
+ * color and stroke width.
+ */
+CanvasAssertions.getLinesDrawn = function(proxy) {
+ var lastCall;
+ var lines = [];
+ for (var i = 0; i < proxy.calls__.length; i++) {
+ var call = proxy.calls__[i];
+
+ if (call.name == "lineTo") {
+ if (lastCall != null) {
+ lines.push([lastCall, call]);
+ }
+ }
+
+ lastCall = (call.name === "lineTo" || call.name === "moveTo") ? call : null;
+ }
+ return lines;
+};
+
+/**
+ * Verifies that every call to context.save() has a matching call to
+ * context.restore().
+ */
+CanvasAssertions.assertBalancedSaveRestore = function(proxy) {
+ var depth = 0;
+ for (var i = 0; i < proxy.calls__.length; i++) {
+ var call = proxy.calls__[i];
+ if (call.name == "save") depth++
+ if (call.name == "restore") {
+ if (depth == 0) {
+ fail("Too many calls to restore()");
+ }
+ depth--;
+ }
+ }
+
+ if (depth > 0) {
+ fail("Missing matching 'context.restore()' calls.");
+ }
+};
/**
* Checks how many lines of the given color have been drawn.
}
}
return num_lines;
-}
+};
CanvasAssertions.matchPixels = function(expected, actual) {
// Expect array of two integers. Assuming the values are within one
// who knows what pixel a value of 5.8888 results in.
return Math.abs(expected[0] - actual[0]) < 1 &&
Math.abs(expected[1] - actual[1]) < 1;
-}
+};
CanvasAssertions.matchAttributes = function(expected, actual) {
for (var attr in expected) {
}
}
return true;
-}
+};