testgit: Add test harnesses

1 files changed, 25 insertions, 0 deletions

diff --git a/internal/testgit/algorithms.go b/internal/testgit/algorithms.go
new file mode 100644
index 00000000..833b846b
--- /dev/null
+++ b/internal/testgit/algorithms.go
@@ -0,0 +1,25 @@
+package testgit
+
+import (
+	"testing"
+
+	"codeberg.org/lindenii/furgit/oid"
+)
+
+// SupportedAlgorithms returns all object ID algorithms supported by furgit.
+func SupportedAlgorithms() []oid.Algorithm {
+	return []oid.Algorithm{
+		oid.AlgorithmSHA1,
+		oid.AlgorithmSHA256,
+	}
+}
+
+// ForEachAlgorithm runs a subtest for every supported algorithm.
+func ForEachAlgorithm(t *testing.T, fn func(t *testing.T, algo oid.Algorithm)) {
+	t.Helper()
+	for _, algo := range SupportedAlgorithms() {
+		t.Run(algo.String(), func(t *testing.T) {
+			fn(t, algo)
+		})
+	}
+}