Add tests for 'getDiffText' method

Author: eGavr

test/getDiffText.js

@@ -0,0 +1,134 @@
+var diffLoger = require('../lib/diff-logger');
+
+require('colors');
+
+describe('\'diffHtml\'', function () {
+
+    it('must return an empty string', function () {
+
+        var inp = [ {
+                value: 'text',
+                added: undefined,
+                removed: undefined
+            } ];
+
+        diffLoger.getDiffText(inp).must.be.equal('');
+    });
+
+    it('must return a diff string', function () {
+
+        var inp = [ {
+                value: 'texttexttexttexttexttexttexttexttexttexttext',
+                added: undefined,
+                removed: undefined
+            }, {
+                value: '!',
+                added: true,
+                removed: undefined
+            }, {
+                value: 'Text',
+                added: undefined,
+                removed: undefined
+            }, {
+                value: '!',
+                added: true,
+                removed: undefined
+            }, {
+                value: 'texttexttexttext',
+                added: undefined,
+                removed: undefined
+            } ],
+
+            out = '\n...\n' + 'texttexttexttexttext'.grey + '!'.green + 'Text'.grey + '!'.green + 'texttexttexttext'.grey;
+
+        diffLoger.getDiffText(inp).must.be.eql(out);
+    });
+
+    it('must consider negative value of \'charsAroundDiff\' option', function () {
+        var inp = [ {
+                value: 'text',
+                added: undefined,
+                removed: undefined
+            } ];
+
+        diffLoger.getDiffText(inp, { charsAroundDiff: -5 } ).must.be.equal('');
+    });
+
+
+
+    it('must return a diff when there is nothing else in the input', function () {
+
+        var inp = [ {
+                value: 'texttexttexttexttexttexttexttexttexttexttext',
+                added: true,
+                removed: undefined
+            }, {
+                value: 'ololoololoololoololoololoololoololoololoolol',
+                added: false,
+                removed: true
+            } ],
+
+            out = '\n' + 'texttexttexttexttexttexttexttexttexttexttext'.green + 'ololoololoololoololoololoololoololoololoolol'.red;
+
+        diffLoger.getDiffText(inp).must.be.eql(out);
+    });
+
+    it('must return a diff on the beginning of the input', function () {
+
+        var inp = [ {
+                value: 'texttexttext',
+                added: undefined,
+                removed: undefined
+            }, {
+                value: 'text',
+                added: undefined,
+                removed: true
+            }, {
+                value: 'texttexttexttext',
+                added: undefined,
+                removed: undefined
+            } ],
+
+            out = '\n' + 'texttexttext'.grey + 'text'.red + 'texttexttexttext'.grey;
+
+        diffLoger.getDiffText(inp).must.be.eql(out);
+    });
+
+    it('must return several diffs', function () {
+
+        var inp = [ {
+                value: 'texttexttexttexttexttexttexttexttexttexttext',
+                added: undefined,
+                removed: undefined
+            }, {
+                value: 'text',
+                added: undefined,
+                removed: true
+            }, {
+                value: 'texttexttexttexttexttexttexttexttexttexttext',
+                added: undefined,
+                removed: undefined
+            }, {
+                value: '!',
+                added: true,
+                removed: false
+            }, {
+                value: 'text',
+                added: undefined,
+                removed: undefined
+            }, {
+                value: '!',
+                added: true,
+                removed: false
+            }, {
+                value: 'texttexttexttexttext',
+                added: undefined,
+                removed: undefined
+            } ],
+
+            out = '\n...\n' + 'texttexttexttexttext'.grey + 'text'.red + 'texttexttexttexttext'.grey + '\n...\n' + 'texttexttexttexttext'.grey + '!'.green + 'text'.grey + '!'.green + 'texttexttexttexttext'.grey;
+
+        diffLoger.getDiffText(inp).must.be.eql(out);
+    });
+
+});