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Make supsub work with empty nucleus

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Auditors: emily
This commit is contained in:
Ben Alpert
2013-08-17 16:07:22 -07:00
parent f58f582aa5
commit 944b55a6b0
2 changed files with 25 additions and 1 deletions
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21
test/katex-tests.js
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@@ -1,3 +1,4 @@
var buildTree = require("../buildTree");
var parseTree = require("../parseTree");
describe("A parser", function() {
@@ -286,6 +287,26 @@ describe("A subscript and superscript parser", function() {
});
});
describe("A subscript and superscript tree-builder", function() {
it("should not fail when there is no nucleus", function() {
expect(function() {
buildTree(parseTree("^3"));
}).not.toThrow();
expect(function() {
buildTree(parseTree("_2"));
}).not.toThrow();
expect(function() {
buildTree(parseTree("^3_2"));
}).not.toThrow();
expect(function() {
buildTree(parseTree("_2^3"));
}).not.toThrow();
});
});
describe("A group parser", function() {
it("should not fail", function() {
expect(function() {