Port cov-ctfe to a unittest

source/dub/test/base.d

@@ -62,7 +62,7 @@ public class TestCLIApp
     public ~this ()
     {
         // destroy dir
-        //std.file.rmdirRecurse(this.dir);
+        std.file.rmdirRecurse(this.dir);
         this.dir = null;
     }
 

source/dub/test/build.d

@@ -0,0 +1,52 @@
+/*******************************************************************************
+
+    Tests for `dub build`
+
+*******************************************************************************/
+
+module dub.test.build;
+
+version (unittest):
+
+import dub.test.base;
+
+/// Test for cov-ctfe
+unittest
+{
+    scope dub = new TestCLIApp();
+
+    // Setup
+    const pkg_path = dub.path.buildPath("cov-ctfe");
+    std.file.mkdir(pkg_path);
+    std.file.write(pkg_path.buildPath("dub.sdl"),
+`name "test"
+version "1.0.0"
+targetType "executable"
+dflags "-cov=100"
+mainSourceFile "test.d"
+`);
+    std.file.write(pkg_path.buildPath("test.d"),
+q{int f(int x)
+{
+	return x + 1;
+}
+
+int g(int x)
+{
+	return x * 2;
+}
+
+enum gResult = g(12);			// execute g() at compile-time
+
+int main(string[] args)
+{
+	assert(f(11) + gResult == 36);
+	return 0;
+}
+});
+
+    // Run test
+    auto res = dub.run(["--root", "cov-ctfe", "--build=cov-ctfe"]);
+    assert(res.status == 0);
+    assert(res.stdout.canFind("Running cov-ctfe/test"));
+}