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node_modules/mammoth/test/html/simplify.tests.js

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+var assert = require("assert");
+
+var _ = require("underscore");
+
+var test = require("../test")(module);
+var html = require("../../lib/html");
+var htmlPaths = require("../../lib/styles/html-paths");
+
+var nonFreshElement = html.nonFreshElement;
+var text = html.text;
+
+test("empty text nodes are removed", function() {
+    assert.deepEqual(
+        simplifyNode(text("")),
+        []
+    );
+});
+
+test("elements with no children are removed", function() {
+    assert.deepEqual(
+        simplifyNode(nonFreshElement("p", {}, [])),
+        []
+    );
+});
+
+test("elements only containing empty nodes are removed", function() {
+    assert.deepEqual(
+        simplifyNode(nonFreshElement("p", {}, [text("")])),
+        []
+    );
+});
+
+test("empty children of element are removed", function() {
+    assert.deepEqual(
+        simplifyNode(nonFreshElement("p", {}, [text("Hello"), text("")])),
+        [nonFreshElement("p", {}, [text("Hello")])]
+    );
+});
+
+test("empty void elements are not removed", function() {
+    assert.deepEqual(
+        simplifyNode(nonFreshElement("br", {}, [])),
+        [nonFreshElement("br", {}, [])]
+    );
+});
+
+test("successive fresh elements are not collapsed", function() {
+    var path = htmlPaths.elements([
+        htmlPaths.element("p", {}, {fresh: true})
+    ]);
+    var original = concat(
+        pathToNodes(path, [text("Hello")]),
+        pathToNodes(path, [text(" there")])
+    );
+    
+    assert.deepEqual(
+        html.simplify(original),
+        original);
+});
+
+test("successive plain non-fresh elements are collapsed if they have the same tag name", function() {
+    var path = htmlPaths.elements([
+        htmlPaths.element("p", {}, {fresh: false})
+    ]);
+    assert.deepEqual(
+        html.simplify(concat(
+            pathToNodes(path, [text("Hello")]),
+            pathToNodes(path, [text(" there")])
+        )),
+        pathToNodes(path, [text("Hello"), text(" there")])
+    );
+});
+
+test("non-fresh can collapse into preceding fresh element", function() {
+    var freshPath = htmlPaths.elements([
+        htmlPaths.element("p", {}, {fresh: true})]);
+    var nonFreshPath = htmlPaths.elements([
+        htmlPaths.element("p", {}, {fresh: false})]);
+    assert.deepEqual(
+        html.simplify(concat(
+            pathToNodes(freshPath, [text("Hello")]),
+            pathToNodes(nonFreshPath, [text(" there")])
+        )),
+        pathToNodes(freshPath, [text("Hello"), text(" there")])
+    );
+});
+
+test("children of collapsed element can collapse with children of another collapsed element", function() {
+    assert.deepEqual(
+        html.simplify([
+            nonFreshElement("blockquote", {}, [nonFreshElement("p", {}, [text("Hello")])]),
+            nonFreshElement("blockquote", {}, [nonFreshElement("p", {}, [text("there")])])
+        ]),
+        [nonFreshElement("blockquote", {}, [nonFreshElement("p", {}, [text("Hello"), text("there")])])]
+    );
+});
+
+test("empty elements are removed before collapsing", function() {
+    var freshPath = htmlPaths.elements([
+        htmlPaths.element("p", {}, {fresh: true})]);
+    var nonFreshPath = htmlPaths.elements([
+        htmlPaths.element("p", {}, {fresh: false})]);
+    assert.deepEqual(
+        html.simplify(concat(
+            pathToNodes(nonFreshPath, [text("Hello")]),
+            pathToNodes(freshPath, []),
+            pathToNodes(nonFreshPath, [text(" there")])
+        )),
+        pathToNodes(nonFreshPath, [text("Hello"), text(" there")])
+    );
+});
+
+test("when separator is present then separator is prepended to collapsed element", function() {
+    var unseparatedPath = htmlPaths.elements([
+        htmlPaths.element("pre", {}, {fresh: false})
+    ]);
+    var separatedPath = htmlPaths.elements([
+        htmlPaths.element("pre", {}, {fresh: false, separator: "\n"})
+    ]);
+    assert.deepEqual(
+        html.simplify(concat(
+            pathToNodes(unseparatedPath, [text("Hello")]),
+            pathToNodes(separatedPath, [text(" the"), text("re")])
+        )),
+        pathToNodes(unseparatedPath, [text("Hello"), text("\n"), text(" the"), text("re")])
+    );
+});
+
+function simplifyNode(node) {
+    return html.simplify([node]);
+}
+
+function concat() {
+    return _.flatten(arguments, true);
+}
+
+function pathToNodes(path, nodes) {
+    return path.wrap(function() {
+        return nodes;
+    });
+}