Separate literals from symbolizers

test/spec/ol/style/textsymbolizer.test.js

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+goog.provide('ol.test.style.Text');
+
+describe('ol.style.Text', function() {
+
+  describe('constructor', function() {
+
+    it('accepts literal values', function() {
+      var symbolizer = new ol.style.Text({
+        color: '#ff0000',
+        fontFamily: 'Arial',
+        fontSize: 11,
+        text: 'Test',
+        opacity: 0.6
+      });
+      expect(symbolizer).to.be.a(ol.style.Text);
+    });
+
+    it('accepts expressions', function() {
+      var symbolizer = new ol.style.Text({
+        color: ol.expr.parse('"#ff0000"'),
+        fontFamily: ol.expr.parse('"Arial"'),
+        fontSize: ol.expr.parse('11'),
+        text: ol.expr.parse('"Test"'),
+        opacity: ol.expr.parse('0.6')
+      });
+      expect(symbolizer).to.be.a(ol.style.Text);
+    });
+
+  });
+
+  describe('#createLiteral()', function() {
+
+    it('evaluates expressions with the given feature', function() {
+      var symbolizer = new ol.style.Text({
+        color: ol.expr.parse('colorAttr'),
+        fontFamily: ol.expr.parse('fontFamilyAttr'),
+        fontSize: ol.expr.parse('fontSizeAttr'),
+        text: ol.expr.parse('textAttr'),
+        opacity: ol.expr.parse('opacityAttr')
+      });
+
+      var feature = new ol.Feature({
+        colorAttr: '#ff0000',
+        fontFamilyAttr: 'Dingbats',
+        fontSizeAttr: 43,
+        textAttr: 'Test',
+        opacityAttr: 0.4
+      });
+
+      var literal = symbolizer.createLiteral(feature);
+      expect(literal).to.be.a(ol.style.TextLiteral);
+      expect(literal.color).to.be('#ff0000');
+      expect(literal.fontFamily).to.be('Dingbats');
+      expect(literal.fontSize).to.be(43);
+      expect(literal.text).to.be('Test');
+      expect(literal.opacity).to.be(0.4);
+    });
+
+    it('can be called without a feature', function() {
+      var symbolizer = new ol.style.Text({
+        color: ol.expr.parse('"#ff0000"'),
+        fontFamily: ol.expr.parse('"Arial"'),
+        fontSize: ol.expr.parse('11'),
+        text: ol.expr.parse('"Test"'),
+        opacity: ol.expr.parse('0.6')
+      });
+
+      var literal = symbolizer.createLiteral();
+      expect(literal).to.be.a(ol.style.TextLiteral);
+      expect(literal.color).to.be('#ff0000');
+      expect(literal.fontFamily).to.be('Arial');
+      expect(literal.fontSize).to.be(11);
+      expect(literal.text).to.be('Test');
+      expect(literal.opacity).to.be(0.6);
+    });
+
+    it('applies default type if none provided', function() {
+      var symbolizer = new ol.style.Text({
+        text: 'Test'
+      });
+
+      var literal = symbolizer.createLiteral();
+      expect(literal).to.be.a(ol.style.TextLiteral);
+      expect(literal.color).to.be('#000');
+      expect(literal.fontFamily).to.be('sans-serif');
+      expect(literal.fontSize).to.be(10);
+      expect(literal.text).to.be('Test');
+      expect(literal.opacity).to.be(1);
+    });
+
+  });
+
+  describe('#getColor()', function() {
+
+    it('returns the text color', function() {
+      var symbolizer = new ol.style.Text({
+        color: '#ff0000'
+      });
+
+      var color = symbolizer.getColor();
+      expect(color).to.be.a(ol.expr.Literal);
+      expect(color.getValue()).to.be('#ff0000');
+    });
+
+  });
+
+
+  describe('#getFontFamily()', function() {
+
+    it('returns the font family', function() {
+      var symbolizer = new ol.style.Text({
+        fontFamily: 'Arial'
+      });
+
+      var fontFamily = symbolizer.getFontFamily();
+      expect(fontFamily).to.be.a(ol.expr.Literal);
+      expect(fontFamily.getValue()).to.be('Arial');
+    });
+
+  });
+
+  describe('#getFontSize()', function() {
+
+    it('returns the font size', function() {
+      var symbolizer = new ol.style.Text({
+        fontSize: 42
+      });
+
+      var fontSize = symbolizer.getFontSize();
+      expect(fontSize).to.be.a(ol.expr.Literal);
+      expect(fontSize.getValue()).to.be(42);
+    });
+
+  });
+
+  describe('#getOpacity()', function() {
+
+    it('returns the opacity', function() {
+      var symbolizer = new ol.style.Text({
+        fontSize: 1,
+        opacity: 0.123
+      });
+
+      var opacity = symbolizer.getOpacity();
+      expect(opacity).to.be.a(ol.expr.Literal);
+      expect(opacity.getValue()).to.be(0.123);
+    });
+
+  });
+
+  describe('#setColor()', function() {
+
+    it('sets the text color', function() {
+      var symbolizer = new ol.style.Text({
+        color: '#ff0000'
+      });
+
+      symbolizer.setColor(new ol.expr.Literal('#0000ff'));
+
+      var color = symbolizer.getColor();
+      expect(color).to.be.a(ol.expr.Literal);
+      expect(color.getValue()).to.be('#0000ff');
+    });
+
+    it('throws when not provided an expression', function() {
+      var symbolizer = new ol.style.Text({
+        color: '#ff0000'
+      });
+
+      expect(function() {
+        symbolizer.setColor('#0000ff');
+      }).throwException(function(err) {
+        expect(err).to.be.a(goog.asserts.AssertionError);
+      });
+    });
+
+  });
+
+  describe('#setFontFamily()', function() {
+
+    it('sets the font family', function() {
+      var symbolizer = new ol.style.Text({
+        fontFamily: '#ff0000'
+      });
+
+      symbolizer.setFontFamily(new ol.expr.Literal('#0000ff'));
+
+      var fontFamily = symbolizer.getFontFamily();
+      expect(fontFamily).to.be.a(ol.expr.Literal);
+      expect(fontFamily.getValue()).to.be('#0000ff');
+    });
+
+    it('throws when not provided an expression', function() {
+      var symbolizer = new ol.style.Text({
+        fontFamily: '#ff0000'
+      });
+
+      expect(function() {
+        symbolizer.setFontFamily('#0000ff');
+      }).throwException(function(err) {
+        expect(err).to.be.a(goog.asserts.AssertionError);
+      });
+    });
+
+  });
+
+  describe('#setFontSize()', function() {
+
+    it('sets the font size', function() {
+      var symbolizer = new ol.style.Text({
+        fontSize: 10
+      });
+      symbolizer.setFontSize(new ol.expr.Literal(20));
+
+      var fontSize = symbolizer.getFontSize();
+      expect(fontSize).to.be.a(ol.expr.Literal);
+      expect(fontSize.getValue()).to.be(20);
+    });
+
+    it('throws when not provided an expression', function() {
+      var symbolizer = new ol.style.Text({
+        fontSize: 10
+      });
+
+      expect(function() {
+        symbolizer.setFontSize(10);
+      }).throwException(function(err) {
+        expect(err).to.be.a(goog.asserts.AssertionError);
+      });
+    });
+
+  });
+
+  describe('#setOpacity()', function() {
+
+    it('sets the opacity', function() {
+      var symbolizer = new ol.style.Text({
+        fontSize: 1,
+        opacity: 0.123
+      });
+      symbolizer.setOpacity(new ol.expr.Literal(0.321));
+
+      var opacity = symbolizer.getOpacity();
+      expect(opacity).to.be.a(ol.expr.Literal);
+      expect(opacity.getValue()).to.be(0.321);
+    });
+
+    it('throws when not provided an expression', function() {
+      var symbolizer = new ol.style.Text({
+        fontSize: 1,
+        opacity: 1
+      });
+
+      expect(function() {
+        symbolizer.setOpacity(0.5);
+      }).throwException(function(err) {
+        expect(err).to.be.a(goog.asserts.AssertionError);
+      });
+    });
+
+  });
+
+  describe('#setText()', function() {
+
+    it('sets the text', function() {
+      var symbolizer = new ol.style.Text({
+        fontSize: 1,
+        text: 'Initial Text'
+      });
+      symbolizer.setText(new ol.expr.Literal('New Text'));
+
+      var text = symbolizer.getText();
+      expect(text).to.be.a(ol.expr.Literal);
+      expect(text.getValue()).to.be('New Text');
+    });
+
+    it('throws when not provided an expression', function() {
+      var symbolizer = new ol.style.Text({
+        fontSize: 1,
+        text: 'Test'
+      });
+
+      expect(function() {
+        symbolizer.setText('Bad');
+      }).throwException(function(err) {
+        expect(err).to.be.a(goog.asserts.AssertionError);
+      });
+    });
+
+  });
+
+});
+
+goog.require('goog.asserts.AssertionError');
+
+goog.require('ol.Feature');
+goog.require('ol.expr');
+goog.require('ol.expr.Literal');
+goog.require('ol.expr.Literal');
+goog.require('ol.style.Text');
+goog.require('ol.style.TextLiteral');