feat: add github fetcher layer

internal/github/fetcher_test.go

@@ -0,0 +1,31 @@
+package github
+
+import "testing"
+
+func TestGetPushPatches(t *testing.T) {
+	// this IS a BAD test
+	// I write these to test out individual functions as I write them, so they not not
+	// in any good sense a "test" test rather more like if what I wrote even works at all
+	// is there a better way?
+	patches, err := getPushPatches("torvalds")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(patches) == 0 {
+		t.Fatalf("no patches found")
+	}
+}
+
+func TestGetUniqTzFromPatches(t *testing.T) {
+	// another test in the same vein
+	patches, _ := getPushPatches("torvalds")
+	tzs, err := getUniqueTzFromPatches(patches)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(tzs) == 0 {
+		t.Fatalf("no timezones found")
+	}
+}