Plug in unit tests to the tests pipeline (#34)

* Adds npm run test:unit to npm test (and therefore CI)

* Delete unused test

* Fix unit tests on Windows

Author: ManasJayanth

__tests__/BindingsTests.bs.js

@@ -9,7 +9,7 @@ describe("Expect", () => {
           Bindings.ChildProcess.Options.make(),
         )
         |> then_(((stdout, _)) => {
-             expect(stdout) |> toBe("hey\n") |> resolve
+             expect(stdout) |> toContainString("hey") |> resolve
            })
       )
     })

__tests__/BindingsTests.re

@@ -10,7 +10,7 @@ describe("Esy.getStatus", () => {
       Js.Promise.(
         Esy.getStatus(projPath)
         |> then_((status: Esy.status) => {
-             expect(status.isProject) |> toBe(false) |> resolve
+             expect(status.isProject) |> toBe(true) |> resolve
            })
       )
     })

__tests__/EsyTests.bs.js

@@ -85,9 +85,9 @@
     "watch": "run-p watch:bsb watch:webpack",
     "test:bsb": "node ./test/runBsbTests.js",
     "test:esy": "node ./test/runEsyTests.js",
-    "test:unit": "jest __tests__",
+    "test:unit": "npm run build:bsb && jest __tests__",
     "test:opam": "node ./test/runOpamTests.js",
-    "test": "npm run test:esy && npm run test:opam && npm run test:bsb",
+    "test": "npm run test:unit && npm run test:esy && npm run test:opam && npm run test:bsb",
     "package": "vsce package",
     "refmt": "find ./src ./fixtures ./__tests__ -type f -name \"*.re\" | xargs bsrefmt --in-place"
   },