Add diffview tests.

Gearset · Sep 11, 2015 · 9d99aa5 · 9d99aa5
1 parent fe3b415
commit 9d99aa5
Show file tree

Hide file tree

Showing 5 changed files with 101 additions and 0 deletions.
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/difflib.js b/difflib.js
@@ -28,6 +28,9 @@ ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF S
 DAMAGE.
 ***/
 /* Author: Chas Emerick <cemerick@snowtide.com> */
+
+exports = module.exports = {};
+
 var __whitespace = {" ":true, "\t":true, "\n":true, "\f":true, "\r":true};
 
 var difflib = {
@@ -411,3 +414,5 @@ var difflib = {
 	}
 };
 
+exports.stringAsLines = difflib.stringAsLines;
+exports.SequenceMatcher = difflib.SequenceMatcher;
diff --git a/diffview.js b/diffview.js
@@ -27,6 +27,9 @@ The views and conclusions contained in the software and documentation are those
 authors and should not be interpreted as representing official policies, either expressed
 or implied, of Chas Emerick.
 */
+exports = module.exports = {};
+var difflib = require("./difflib");
+
 diffview = {
 	/**
 	 * Builds and returns a visual diff view.  The single parameter, `params', should contain
@@ -207,3 +210,4 @@ diffview = {
 	}
 };
 
+exports.buildView = diffview.buildView;
diff --git a/package.json b/package.json
@@ -0,0 +1,28 @@
+{
+  "name": "jsdifflib",
+  "version": "1.0.0",
+  "description": "A javascript library to diff two files.",
+  "main": "difflib.js",
+  "directories": {
+    "test": "test"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "mocha": "^2.3.2",
+	"jsdom": "^3.1.2",
+	"chai": "^3.2.0"
+  },
+  "scripts": {
+    "test": "mocha"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/red-gate/jsdifflib.git"
+  },
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/red-gate/jsdifflib/issues"
+  },
+  "homepage": "https://github.com/red-gate/jsdifflib#readme"
+}
diff --git a/test/diffview_tests.js b/test/diffview_tests.js
@@ -0,0 +1,63 @@
+var expect = require("chai").expect;
+var diffview = require("../diffview.js");
+var difflib = require("../difflib.js");
+var jsdom = require("jsdom").jsdom;
+var document = jsdom("<html></html>");
+global.document = document;
+
+describe("diffview", function() {
+   describe(".buildView()", function() {
+       it("can build view with a difference", function () {
+           var view = testBuildView('a', 'b');
+           expect(view.differences).to.equal(1);
+           expect(view.diffOutput.outerHTML).to.contain('diffview_difference_1');
+           expect(view.diffOutput.outerHTML).not.to.contain('diffview_difference_2');
+       });
+
+       it("can build view with no differences", function () {
+           var view = testBuildView('a', 'a');
+           expect(view.differences).to.equal(0);
+           expect(view.diffOutput.outerHTML).not.to.contain('diffview_difference_1');
+       });
+
+       it("can build view with multi-line difference blocks", function () {
+           var source = '<ruleEntry>' +
+               '\r\n<assignedTo>spencerthang@gmail.com</assignedTo>' +
+               '\r\n<criteriaItems>' +
+               '\r\n  <field>Lead.Country</field>' +
+               '\r\n  <value>US,USA,United States,United States of America</value>' +
+               '\r\n</criteriaItems>';
+
+           var target = '<ruleEntry>' +
+               '\r\n<assignedTo>spencerthang@red-gate.com</assignedTo>' +
+               '\r\n<criteriaItems>' +
+               '\r\n  <field>Lead.City</field>' +
+               '\r\n  <value>SG,Singapore</value>' +
+               '\r\n</criteriaItems>';
+
+           var view = testBuildView(source, target);
+           expect(view.differences).to.equal(2);
+           expect(view.diffOutput.outerHTML).to.contain('diffview_difference_1');
+           expect(view.diffOutput.outerHTML).to.contain('diffview_difference_2');
+           expect(view.diffOutput.outerHTML).not.to.contain('diffview_difference_3');
+       });
+   });
+});
+
+var testBuildView = function(sourceText, targetText) {
+    var source = difflib.stringAsLines(sourceText);
+    var target = difflib.stringAsLines(targetText);
+    var sm = new difflib.SequenceMatcher(source, target);
+    var opcodes = sm.get_opcodes();
+
+    var diffResult = diffview.buildView({
+        baseTextLines: source,
+        newTextLines: target,
+        opcodes: opcodes,
+        baseTextName: 'Source',
+        newTextName: 'Target',
+        viewType: 0
+    });
+
+    return diffResult;
+}