Add Gitea read operations to the forge boundary

internal/gitea/backend_test.go

@@ -0,0 +1,116 @@
+package gitea
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"go.maximumdirect.net/releasekit/internal/forge"
+)
+
+func TestBackendTagCommitUsesEscapedFullTagAndAuthentication(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if got, want := r.RequestURI, "/api/v1/repos/owner/project/tags/v1.2.3%2Frc.1"; got != want {
+			t.Errorf("request URI = %q, want %q", got, want)
+		}
+		if got, want := r.Header.Get("Authorization"), "token fixture-secret-token"; got != want {
+			t.Errorf("authorization = %q, want %q", got, want)
+		}
+		_ = json.NewEncoder(w).Encode(map[string]any{"commit": map[string]string{"sha": "abcdef"}})
+	}))
+	defer server.Close()
+
+	backend := NewBackend(testDestination(server.URL), server.Client())
+	commit, err := backend.TagCommit(context.Background(), "v1.2.3/rc.1")
+	if err != nil || commit != "abcdef" {
+		t.Fatalf("TagCommit() = %q, %v", commit, err)
+	}
+}
+
+func TestBackendFindReleaseReturnsNeutralNotFound(t *testing.T) {
+	server := httptest.NewServer(http.NotFoundHandler())
+	defer server.Close()
+	backend := NewBackend(testDestination(server.URL), server.Client())
+
+	_, err := backend.FindRelease(context.Background(), "v1.2.3")
+	var failure *forge.Failure
+	if !errors.As(err, &failure) || failure.Kind != forge.FailureNotFound {
+		t.Fatalf("FindRelease() error = %v, want neutral not-found failure", err)
+	}
+	var cause *Failure
+	if !errors.As(err, &cause) || cause.StatusCode != http.StatusNotFound {
+		t.Fatalf("FindRelease() error cause = %v, want Gitea 404 diagnostic", err)
+	}
+}
+
+func TestBackendFindReleaseDoesNotRequireWriteResponseFields(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		_ = json.NewEncoder(w).Encode(releaseResponse{TagName: "v1.2.3", Name: "Release"})
+	}))
+	defer server.Close()
+	backend := NewBackend(testDestination(server.URL), server.Client())
+
+	release, err := backend.FindRelease(context.Background(), "v1.2.3")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if release.Tag != "v1.2.3" || release.Title != "Release" || release.Handle == nil {
+		t.Fatalf("FindRelease() = %#v", release)
+	}
+}
+
+func TestBackendListsMetadataAndOpensCallerOwnedAssetStream(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if got, want := r.Header.Get("Authorization"), "token fixture-secret-token"; got != want {
+			t.Errorf("authorization = %q, want %q", got, want)
+		}
+		switch r.URL.Path {
+		case "/api/v1/repos/owner/project/releases/tags/v1.2.3":
+			_ = json.NewEncoder(w).Encode(releaseResponse{ID: 12, TagName: "v1.2.3"})
+		case "/api/v1/repos/owner/project/releases/12/assets":
+			_ = json.NewEncoder(w).Encode([]assetResponse{{ID: 4, Name: "app.bin", Size: 4, BrowserDownloadURL: "/files/app"}})
+		case "/files/app":
+			_, _ = io.WriteString(w, "data")
+		default:
+			t.Errorf("unexpected path %q", r.URL.Path)
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+	backend := NewBackend(testDestination(server.URL), server.Client())
+
+	release, err := backend.FindRelease(context.Background(), "v1.2.3")
+	if err != nil {
+		t.Fatal(err)
+	}
+	assets, err := backend.ListAssets(context.Background(), release.Handle)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(assets) != 1 || assets[0].Filename != "app.bin" || assets[0].Size != 4 || assets[0].Handle == nil {
+		t.Fatalf("ListAssets() = %#v", assets)
+	}
+	stream, err := backend.OpenAsset(context.Background(), assets[0].Handle)
+	if err != nil {
+		t.Fatal(err)
+	}
+	content, readErr := io.ReadAll(stream)
+	closeErr := stream.Close()
+	if readErr != nil || closeErr != nil || string(content) != "data" {
+		t.Fatalf("OpenAsset() content = %q, read error = %v, close error = %v", content, readErr, closeErr)
+	}
+}
+
+func TestBackendRejectsAssetHandleFromAnotherBackendType(t *testing.T) {
+	backend := NewBackend(testDestination("http://example.test"), nil)
+	_, err := backend.OpenAsset(context.Background(), strings.NewReader("asset"))
+	var failure *forge.Failure
+	if !errors.As(err, &failure) || failure.Kind != forge.FailureInvalid {
+		t.Fatalf("OpenAsset() error = %v, want invalid handle", err)
+	}
+}