test: expand coverage across readers, writers, cmd, ui, diff and merge

Implements tests/_plans and previously deferred packages; updates plan
README with new coverage numbers.

pkg/writers/bun/name_converter_test.go

@@ -0,0 +1,83 @@
+package bun
+
+import "testing"
+
+func TestSnakeCaseToCamelCase(t *testing.T) {
+	tests := []struct{ in, want string }{
+		{"", ""},
+		{"user", "user"},
+		{"User_Name", "userName"},
+		{"user_id", "userID"},
+		{"http_request", "httpRequest"},
+	}
+	for _, tt := range tests {
+		if got := SnakeCaseToCamelCase(tt.in); got != tt.want {
+			t.Errorf("%q: got %q want %q", tt.in, got, tt.want)
+		}
+	}
+}
+
+func TestPascalCaseToSnakeCase(t *testing.T) {
+	tests := []struct{ in, want string }{
+		{"", ""},
+		{"User", "user"},
+		{"UserName", "user_name"},
+		{"UserID", "user_id"},
+		{"HTTPRequest", "http_request"},
+	}
+	for _, tt := range tests {
+		if got := PascalCaseToSnakeCase(tt.in); got != tt.want {
+			t.Errorf("%q: got %q want %q", tt.in, got, tt.want)
+		}
+	}
+}
+
+func TestSingularize(t *testing.T) {
+	tests := []struct{ in, want string }{
+		{"", ""},
+		{"people", "person"},
+		{"People", "person"},
+		{"categories", "category"},
+		{"wolves", "wolf"},
+		{"boxes", "box"},
+		{"churches", "church"},
+		{"users", "user"},
+		{"class", "class"},
+		{"user", "user"},
+	}
+	for _, tt := range tests {
+		if got := Singularize(tt.in); got != tt.want {
+			t.Errorf("%q: got %q want %q", tt.in, got, tt.want)
+		}
+	}
+}
+
+func TestPluralize(t *testing.T) {
+	tests := []struct{ in, want string }{
+		{"", ""},
+		{"person", "people"},
+		{"category", "categories"},
+		{"box", "boxes"},
+		{"church", "churches"},
+		{"user", "users"},
+		{"day", "days"},
+	}
+	for _, tt := range tests {
+		if got := Pluralize(tt.in); got != tt.want {
+			t.Errorf("%q: got %q want %q", tt.in, got, tt.want)
+		}
+	}
+}
+
+func TestIsVowel(t *testing.T) {
+	for _, c := range []byte("aeiouAEIOU") {
+		if !isVowel(c) {
+			t.Errorf("%c should be vowel", c)
+		}
+	}
+	for _, c := range []byte("bcxyzBZ1_") {
+		if isVowel(c) {
+			t.Errorf("%c should not be vowel", c)
+		}
+	}
+}