More tests.

tests/commandLineOptions.test.js

@@ -0,0 +1,17 @@
+const CliTest = require("command-line-test");
+
+describe("test", function() {
+  it("shows help", function*() {
+    const cliTest = new CliTest();
+    const res = yield cliTest.exec("../_build/default/bin/Extract.exe -help");
+    expect(res.stdout).toEqual(
+      "Usage: ../_build/default/bin/Extract.exe directory ...\n  -v shows the program version\n  -help  Display this list of options\n  --help  Display this list of options"
+    );
+  });
+
+  it("shows version", function*() {
+    const cliTest = new CliTest();
+    const res = yield cliTest.exec("../_build/default/bin/Extract.exe -v");
+    expect(res.stdout).toEqual("0.4.0");
+  });
+});

tests/test1.test.js → tests/extraction.test.js

@@ -21,13 +21,19 @@ const expectedJson = [
     id: "test1.msg2.2",
     defaultMessage: "This is message 2.2",
     description: "Description for message 2.2"
+  },
+  {
+    id: "test2.msg1.1",
+    defaultMessage: "This is message 2.1.1"
   }
 ];
 
 describe("test", function() {
   it("extracts messages", function*() {
     const cliTest = new CliTest();
-    const res = yield cliTest.exec("../_build/default/bin/Extract.exe test1");
+    const res = yield cliTest.exec(
+      "../_build/default/bin/Extract.exe test1 test2"
+    );
     expect(JSON.parse(res.stdout)).toEqual(expectedJson);
   });
 });

tests/test2/Test_2_1.re

@@ -0,0 +1,8 @@
+let _ =
+  [@intl.messages]
+  {
+    "test2.msg1.1": {
+      "id": "test2.msg1.1",
+      "defaultMessage": "This is message 2.1.1",
+    },
+  };