fix: app cmd parsing, usage & tests

Note: the integration tests don't work due to ValidateApp still
attempting to validate the host key for the test app which doesn't
exist. This will be fixed in a future commit.

pkg/test/test.go

@@ -0,0 +1,38 @@
+package test
+
+import (
+	"log"
+	"os"
+
+	"github.com/sirupsen/logrus"
+)
+
+// RmServerAppRecipe deletes the test server / app / recipe.
+func RmServerAppRecipe() {
+	testAppLink := os.ExpandEnv("$HOME/.abra/servers/foo.com")
+	if err := os.Remove(testAppLink); err != nil {
+		logrus.Fatal(err)
+	}
+
+	testRecipeLink := os.ExpandEnv("$HOME/.abra/recipes/test")
+	if err := os.Remove(testRecipeLink); err != nil {
+		logrus.Fatal(err)
+	}
+}
+
+// MkServerAppRecipe symlinks the test server / app / recipe.
+func MkServerAppRecipe() {
+	RmServerAppRecipe()
+
+	testAppDir := os.ExpandEnv("$PWD/../../tests/resources/testapp")
+	testAppLink := os.ExpandEnv("$HOME/.abra/servers/foo.com")
+	if err := os.Symlink(testAppDir, testAppLink); err != nil {
+		log.Fatal(err)
+	}
+
+	testRecipeDir := os.ExpandEnv("$PWD/../../tests/resources/testrecipe")
+	testRecipeLink := os.ExpandEnv("$HOME/.abra/recipes/test")
+	if err := os.Symlink(testRecipeDir, testRecipeLink); err != nil {
+		log.Fatal(err)
+	}
+}