assets: added tests to make sure vcs and embedded data are in sync

License: MIT
Signed-off-by: Henry <cryptix@riseup.net>

assets/assets_test.go

+package assets
+
+import (
+	"bytes"
+	"io/ioutil"
+	"sync"
+	"testing"
+)
+
+// TestEmbeddedDocs makes sure we don't forget to regenerate after documentation change
+func TestEmbeddedDocs(t *testing.T) {
+	const wantCnt = 6
+	if len(initDocPaths) < wantCnt {
+		t.Fatalf("expected %d documents got %d", wantCnt, len(initDocPaths))
+	}
+
+	var wg sync.WaitGroup
+	for _, f := range initDocPaths {
+		wg.Add(1)
+		// compare asset
+		go func(f string) {
+			defer wg.Done()
+			// load data from filesystem (git)
+			vcsData, err := ioutil.ReadFile(f)
+			if err != nil {
+				t.Errorf("asset %s: could not read vcs file: %s", f, err)
+				return
+			}
+
+			// load data from emdedded source
+			embdData, err := Asset(f)
+			if err != nil {
+				t.Errorf("asset %s: could not read vcs file: %s", f, err)
+				return
+			}
+
+			if !bytes.Equal(vcsData, embdData) {
+				t.Errorf("asset %s: vcs and embedded data isnt equal", f)
+				return
+			}
+
+			t.Logf("checked %s", f)
+		}(f)
+	}
+	wg.Wait()
+}