var ChangeDocumentTest = new TestCase("ChangeDocumentTest", {

    setUp : function() {
        this.doc1 = new ace.Document(["abc", "def"].join("\n"));
        this.doc2 = new ace.Document(["ghi", "jkl"].join("\n"));
        this.editor = new ace.Editor(new MockRenderer());
    },

    "test: change document" : function() {
        this.editor.setDocument(this.doc1);
        assertEquals(this.doc1, this.editor.getDocument());

        this.editor.setDocument(this.doc2);
        assertEquals(this.doc2, this.editor.getDocument());
    },

    "test: only changes to the new document should have effect" : function() {
        var called = false;
        this.editor.onDocumentChange = function() {
            called = true;
        };

        this.editor.setDocument(this.doc1);
        this.editor.setDocument(this.doc2);

        this.doc1.duplicateLines(0, 0);
        assertFalse(called);

        this.doc2.duplicateLines(0, 0);
        assertTrue(called);
    },

    "test: should use cursor of new document" : function() {
        this.doc1.getSelection().moveCursorTo(0, 1);
        this.doc2.getSelection().moveCursorTo(1, 0);

        this.editor.setDocument(this.doc1);
        assertPosition(0, 1, this.editor.getCursorPosition());

        this.editor.setDocument(this.doc2);
        assertPosition(1, 0, this.editor.getCursorPosition());
    },

    "test: only changing the cursor of the new doc should not have an effect" : function() {
        this.editor.onCursorChange = function() {
            called = true;
        };

        this.editor.setDocument(this.doc1);
        this.editor.setDocument(this.doc2);
        assertPosition(0, 0, this.editor.getCursorPosition());

        var called = false;
        this.doc1.getSelection().moveCursorTo(0, 1);
        assertPosition(0, 0, this.editor.getCursorPosition());
        assertFalse(called);

        this.doc2.getSelection().moveCursorTo(1, 1);
        assertPosition(1, 1, this.editor.getCursorPosition());
        assertTrue(called);
    },

    "test: should use selection of new document" : function() {
        this.doc1.getSelection().selectTo(0, 1);
        this.doc2.getSelection().selectTo(1, 0);

        this.editor.setDocument(this.doc1);
        assertPosition(0, 1, this.editor.getSelection().getSelectionLead());

        this.editor.setDocument(this.doc2);
        assertPosition(1, 0, this.editor.getSelection().getSelectionLead());
    },

    "test: only changing the selection of the new doc should not have an effect" : function() {
        this.editor.onSelectionChange = function() {
            called = true;
        };

        this.editor.setDocument(this.doc1);
        this.editor.setDocument(this.doc2);
        assertPosition(0, 0, this.editor.getSelection().getSelectionLead());

        var called = false;
        this.doc1.getSelection().selectTo(0, 1);
        assertPosition(0, 0, this.editor.getSelection().getSelectionLead());
        assertFalse(called);

        this.doc2.getSelection().selectTo(1, 1);
        assertPosition(1, 1, this.editor.getSelection().getSelectionLead());
        assertTrue(called);
    },

    "test: should use mode of new document" : function() {
        this.editor.onDocumentModeChange = function() {
            called = true;
        };
        this.editor.setDocument(this.doc1);
        this.editor.setDocument(this.doc2);

        var called = false;
        this.doc1.setMode(new ace.mode.Text());
        assertFalse(called);

        this.doc2.setMode(new ace.mode.JavaScript());
        assertTrue(called);
    }
});