Run tests with FFI.

.github/workflows/tests.yaml

@@ -5,7 +5,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: macos-latest
 
     steps:
       - uses: actions/checkout@v2
@@ -24,5 +24,15 @@ jobs:
           flutter channel stable
           flutter doctor
 
+      - name: Build WASM
+        run: |
+          cd wasm
+          ./build_wasm.sh release
+
+      - name: Build Shared Lib
+        run: |
+          cd shared_lib
+          ./build_shared.sh
+
       - name: Run tests
-        run: flutter test
+        run: flutter test

test/text_test.dart

@@ -5,7 +5,7 @@ import 'package:rive/src/rive_text.dart';
 import 'src/utils.dart';
 
 void main() {
-  test('simple shaping', () {
+  test('text shaping works', () {
     final bytes = loadFile('assets/RobotoFlex.ttf');
     expect(bytes.lengthInBytes, 1654412);
 
@@ -13,5 +13,34 @@ void main() {
 
     var roboto = Font.decode(bytes.buffer.asUint8List());
     expect(roboto, isNotNull);
+
+    var text = 'ffi test';
+
+    var runs = [
+      TextRun(
+        font: roboto!,
+        fontSize: 32.0,
+        unicharCount: text.length,
+        styleId: 0,
+      )
+    ];
+
+    var result = runs.first.font.shape(text, runs);
+    expect(result.paragraphs.length, 1);
+    expect(result.paragraphs.first.runs.length, 1);
+    var glyphRun = result.paragraphs.first.runs.first;
+
+    // ffi gets ligated as a single glyph
+    expect(glyphRun.glyphCount, 6);
+    expect(glyphRun.textIndexAt(0), 0); // ffi
+    expect(glyphRun.textIndexAt(1), 3); // space after ffi
+
+    var breakLinesResult = result.breakLines(60, TextAlign.left);
+    expect(breakLinesResult.length, 1); // 1 paragraph
+    expect(breakLinesResult.first.length, 2); // 2 lines in the paragraph
+    // first line shows first glyph on the left
+    expect(breakLinesResult.first.first.startIndex, 0);
+    // second line shows third glyph on the left, which is the start of 'test'
+    expect(breakLinesResult.first[1].startIndex, 2);
   });
 }