проектные команды и ссылки на источник

- заведён internal/source: уровни ссылаются друг на друга путём на диске
  или git-репозиторием, ревизия закрепляется хвостом #ref; клон делается
  заново и удаляется, кэша нет
- добавлены init, add, pull, list, check в проекте — манифест
  .conventions.toml, сборка копий по разу на компонент, маркер локальной
  части, READING.md рядом
- проверки формы развязаны с набором: принимают lang.Vocabulary, а язык
  копии узнаётся по строке о версии — манифеста рядом с ней нет

internal/manifest/editlist_test.go

@@ -0,0 +1,98 @@
+package manifest_test
+
+import (
+	"strings"
+	"testing"
+
+	"git.vakhrushev.me/av/convy/internal/manifest"
+)
+
+const projectSource = `# What this repository takes.
+source = "../conventions"
+
+# A component is a region where every chosen layer holds at once.
+[components.backend]
+dir = "backend/docs/conventions"
+lang = ["go"]
+topics = ["errors", "time"]
+
+[components.web]
+dir = "web/docs/conventions"
+topics = [
+  "client-logging",
+]
+`
+
+func TestAddToListKeepsTheShapeOfTheArray(t *testing.T) {
+	out, err := manifest.AddToList([]byte(projectSource), "components.backend", "topics", "logging")
+	if err != nil {
+		t.Fatal(err)
+	}
+	body := string(out)
+	if !strings.Contains(body, `topics = ["errors", "logging", "time"]`) {
+		t.Errorf("a sorted one-line array did not stay sorted and on one line:\n%s", body)
+	}
+	if !strings.Contains(body, "# A component is a region where every chosen layer holds at once.") {
+		t.Errorf("the comment did not survive the edit:\n%s", body)
+	}
+
+	out, err = manifest.AddToList(out, "components.web", "topics", "auth")
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := "topics = [\n  \"auth\",\n  \"client-logging\",\n]"
+	if !strings.Contains(string(out), want) {
+		t.Errorf("an array written down a column did not stay a column:\n%s", out)
+	}
+}
+
+func TestAddToListCreatesTheKeyItDoesNotFind(t *testing.T) {
+	out, err := manifest.AddToList([]byte(projectSource), "components.web", "stack", "express")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(string(out), `stack = ["express"]`) {
+		t.Errorf("the missing key was not created:\n%s", out)
+	}
+}
+
+func TestAddToListRefusesWhatIsThereAlready(t *testing.T) {
+	_, err := manifest.AddToList([]byte(projectSource), "components.backend", "topics", "time")
+	if err == nil || !strings.Contains(err.Error(), "already holds") {
+		t.Errorf("a repeated subscription went through: %v", err)
+	}
+	if _, err := manifest.AddToList([]byte(projectSource), "components.mobile", "topics", "time"); err == nil {
+		t.Errorf("a table that is not there took an entry")
+	}
+}
+
+func TestRemoveFromList(t *testing.T) {
+	out, err := manifest.RemoveFromList([]byte(projectSource), "components.backend", "topics", "errors")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(string(out), `topics = ["time"]`) {
+		t.Errorf("the value was not removed:\n%s", out)
+	}
+	if _, err := manifest.RemoveFromList([]byte(projectSource), "components.backend", "topics", "logging"); err == nil {
+		t.Errorf("removing what is not there went through")
+	}
+}
+
+func TestAddTableGoesLast(t *testing.T) {
+	out, err := manifest.AddTable([]byte(projectSource), "components.mobile",
+		[][2]string{{"dir", `"mobile/docs/conventions"`}, {"topics", "[]"}})
+	if err != nil {
+		t.Fatal(err)
+	}
+	body := string(out)
+	if !strings.Contains(body, "[components.mobile]\ndir = \"mobile/docs/conventions\"\ntopics = []") {
+		t.Errorf("the table was not written:\n%s", body)
+	}
+	if strings.Index(body, "[components.mobile]") < strings.Index(body, "[components.web]") {
+		t.Errorf("the new table did not go last:\n%s", body)
+	}
+	if _, err := manifest.AddTable(out, "components.mobile", nil); err == nil {
+		t.Errorf("a second table of the same name went through")
+	}
+}