fix(ci): configure Codecov PR comments and add unit tests

- Set wait_for_ci: false so Codecov posts PR comments immediately
  instead of waiting for pending Prow e2e statuses that never resolve
- Set comment behavior: new so each push gets a fresh comment
- Add per-file coverage diffs to PR comment layout
- Add unit tests for String, GetRevision, and
  GetKubeVersionForSupportedVersion

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: bryan-cox

codecov.yml

@@ -1,5 +1,8 @@
 codecov:
   branch: main
+  notify:
+    wait_for_ci: false
 
 comment:
-  layout: "condensed_header, diff, flags, components"
+  layout: "condensed_header, diff, files, flags, components"
+  behavior: new

support/supportedversion/version_test.go

@@ -28,6 +28,64 @@ func TestSupportedVersions(t *testing.T) {
 	g.Expect(Supported()).To(Equal([]string{"4.22", "4.21", "4.20", "4.19", "4.18", "4.17", "4.16", "4.15", "4.14"}))
 }
 
+func TestString(t *testing.T) {
+	g := NewGomegaWithT(t)
+	result := String()
+	g.Expect(result).To(ContainSubstring("openshift/hypershift:"))
+	g.Expect(result).To(ContainSubstring("Latest supported OCP:"))
+	g.Expect(result).To(ContainSubstring(LatestSupportedVersion.String()))
+}
+
+func TestGetRevision(t *testing.T) {
+	g := NewGomegaWithT(t)
+	revision := GetRevision()
+	g.Expect(revision).ToNot(BeEmpty())
+}
+
+func TestGetKubeVersionForSupportedVersion(t *testing.T) {
+	testCases := []struct {
+		name            string
+		ocpVersion      string
+		expectedKubeVer string
+		expectErr       bool
+	}{
+		{
+			name:            "When OCP 4.18 is provided it should return Kubernetes 1.31",
+			ocpVersion:      "4.18.0",
+			expectedKubeVer: "1.31.0",
+		},
+		{
+			name:            "When OCP 4.14 is provided it should return Kubernetes 1.27",
+			ocpVersion:      "4.14.0",
+			expectedKubeVer: "1.27.0",
+		},
+		{
+			name:            "When OCP 4.21 is provided it should return Kubernetes 1.34",
+			ocpVersion:      "4.21.0",
+			expectedKubeVer: "1.34.0",
+		},
+		{
+			name:      "When an unmapped OCP version is provided it should return an error",
+			ocpVersion: "4.99.0",
+			expectErr: true,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			g := NewGomegaWithT(t)
+			ver := semver.MustParse(tc.ocpVersion)
+			kubeVer, err := GetKubeVersionForSupportedVersion(ver)
+			if tc.expectErr {
+				g.Expect(err).To(HaveOccurred())
+			} else {
+				g.Expect(err).ToNot(HaveOccurred())
+				g.Expect(kubeVer.String()).To(Equal(tc.expectedKubeVer))
+			}
+		})
+	}
+}
+
 func TestIsValidReleaseVersion(t *testing.T) {
 	v := func(str string) *semver.Version {
 		result := semver.MustParse(str)