diff --git a/checks/http_test.go b/checks/http_test.go
index b9af6af..02436ec 100644
--- a/checks/http_test.go
+++ b/checks/http_test.go
@@ -5,6 +5,7 @@ import (
 	"io"
 	"net/http"
 	"net/http/httptest"
+	"slices"
 	"strings"
 	"testing"
 
@@ -47,14 +48,9 @@ func TestInterpolateVariables(t *testing.T) {
 func TestInterpolationNames(t *testing.T) {
 	got := InterpolationNames("${baseURL}/users/${id}/${id}")
 	want := []string{"baseURL", "id", "id"}
-	if len(got) != len(want) {
+	if !slices.Equal(got, want) {
 		t.Fatalf("InterpolationNames() = %#v, want %#v", got, want)
 	}
-	for i := range want {
-		if got[i] != want[i] {
-			t.Fatalf("InterpolationNames() = %#v, want %#v", got, want)
-		}
-	}
 }
 
 func TestRunHTTPRequestInterpolatesRequestAndCapturesResponseVariables(t *testing.T) {
diff --git a/checks/local.go b/checks/local.go
index 48606ce..e814743 100644
--- a/checks/local.go
+++ b/checks/local.go
@@ -197,7 +197,7 @@ func evaluateHeaderEquals(headers map[string]string, test api.HTTPRequestTestHea
 	if !ok {
 		return fmt.Errorf("expected %s %q to exist", label, key)
 	}
-	if !strings.EqualFold(got, want) {
+	if got != want {
 		return fmt.Errorf("expected %s %q to equal %q, got %q", label, key, want, got)
 	}
 
diff --git a/checks/local_test.go b/checks/local_test.go
index a377a7e..9dd50cc 100644
--- a/checks/local_test.go
+++ b/checks/local_test.go
@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	api "github.com/bootdotdev/bootdev/client"
+	"github.com/goccy/go-json"
 )
 
 func TestLocalSubmissionEventPassesCLIAndHTTPResults(t *testing.T) {
@@ -107,6 +108,68 @@ func TestEvaluateStdoutJq(t *testing.T) {
 	}
 }
 
+func TestEvaluateHTTPRequestTestsHeaderAndTrailerEquality(t *testing.T) {
+	tests := []struct {
+		name        string
+		test        api.HTTPRequestTest
+		result      api.HTTPRequestResult
+		wantFailure bool
+	}{
+		{
+			name: "header name is case insensitive",
+			test: api.HTTPRequestTest{HeadersEqual: &api.HTTPRequestTestHeader{
+				Key:   "X-Request-ID",
+				Value: "abc123",
+			}},
+			result: api.HTTPRequestResult{
+				ResponseHeaders: map[string]string{"x-request-id": "abc123"},
+			},
+		},
+		{
+			name: "header value is case sensitive",
+			test: api.HTTPRequestTest{HeadersEqual: &api.HTTPRequestTestHeader{
+				Key:   "X-Request-ID",
+				Value: "abc123",
+			}},
+			result: api.HTTPRequestResult{
+				ResponseHeaders: map[string]string{"X-Request-ID": "ABC123"},
+			},
+			wantFailure: true,
+		},
+		{
+			name: "trailer name is case insensitive",
+			test: api.HTTPRequestTest{TrailersEqual: &api.HTTPRequestTestHeader{
+				Key:   "X-Checksum",
+				Value: "sha256:abc",
+			}},
+			result: api.HTTPRequestResult{
+				ResponseTrailers: map[string]string{"x-checksum": "sha256:abc"},
+			},
+		},
+		{
+			name: "trailer value is case sensitive",
+			test: api.HTTPRequestTest{TrailersEqual: &api.HTTPRequestTestHeader{
+				Key:   "X-Checksum",
+				Value: "sha256:abc",
+			}},
+			result: api.HTTPRequestResult{
+				ResponseTrailers: map[string]string{"X-Checksum": "SHA256:ABC"},
+			},
+			wantFailure: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			request := api.CLIStepHTTPRequest{Tests: []api.HTTPRequestTest{tt.test}}
+			failure := evaluateHTTPRequestTests(0, request, tt.result)
+			if (failure != nil) != tt.wantFailure {
+				t.Fatalf("failure = %#v, wantFailure = %t", failure, tt.wantFailure)
+			}
+		})
+	}
+}
+
 func TestLocalSubmissionEventRejectsMissingHTTPResponseCaptures(t *testing.T) {
 	tests := []struct {
 		name    string
@@ -194,7 +257,7 @@ func TestValuesEqualPreservesTypes(t *testing.T) {
 		{name: "string and bool", got: "true", want: true, ok: false},
 		{name: "same bools", got: true, want: true, ok: true},
 		{name: "numeric int and float", got: 1, want: 1.0, ok: true},
-		{name: "numeric json number and int", got: testJSONNumber("1"), want: 1, ok: true},
+		{name: "numeric json number and int", got: json.Number("1"), want: 1, ok: true},
 		{name: "nil and string", got: nil, want: "<nil>", ok: false},
 	}
 
@@ -207,12 +270,6 @@ func TestValuesEqualPreservesTypes(t *testing.T) {
 	}
 }
 
-type testJSONNumber string
-
-func (n testJSONNumber) String() string {
-	return string(n)
-}
-
 func intPtr(v int) *int {
 	return &v
 }
diff --git a/checks/runner_test.go b/checks/runner_test.go
index f866e79..2dff631 100644
--- a/checks/runner_test.go
+++ b/checks/runner_test.go
@@ -146,7 +146,9 @@ func TestApplySubmissionResultsMarksAllStepsAndTestsPassedWhenNoFailure(t *testi
 		messages.ResolveTestMsg{StepIndex: 1, TestIndex: 0, Passed: boolPtr(true)},
 	}
 
-	assertMessages(t, got, want)
+	if !reflect.DeepEqual(got, want) {
+		t.Fatalf("messages = %#v, want %#v", got, want)
+	}
 }
 
 func TestApplySubmissionResultsStopsAfterFailedCLITest(t *testing.T) {
@@ -166,7 +168,9 @@ func TestApplySubmissionResultsStopsAfterFailedCLITest(t *testing.T) {
 		messages.ResolveTestMsg{StepIndex: 1, TestIndex: 1, Passed: boolPtr(false)},
 	}
 
-	assertMessages(t, got, want)
+	if !reflect.DeepEqual(got, want) {
+		t.Fatalf("messages = %#v, want %#v", got, want)
+	}
 }
 
 func applySubmissionResultsMessages(cliData api.CLIData, failure *api.StructuredErrCLI) []tea.Msg {
@@ -177,14 +181,6 @@ func applySubmissionResultsMessages(cliData api.CLIData, failure *api.Structured
 	return msgs
 }
 
-func assertMessages(t *testing.T, got []tea.Msg, want []tea.Msg) {
-	t.Helper()
-
-	if !reflect.DeepEqual(got, want) {
-		t.Fatalf("messages = %#v, want %#v", got, want)
-	}
-}
-
 func boolPtr(v bool) *bool {
 	return &v
 }
diff --git a/cmd/login_test.go b/cmd/login_test.go
index 2c06016..b93b875 100644
--- a/cmd/login_test.go
+++ b/cmd/login_test.go
@@ -59,6 +59,11 @@ func TestLoginHTTPHandlerRejectsMissingOrigin(t *testing.T) {
 	if response.Code != http.StatusForbidden {
 		t.Fatalf("status = %d, want %d", response.Code, http.StatusForbidden)
 	}
+	select {
+	case code := <-inputChan:
+		t.Fatalf("unexpected login code accepted: %q", code)
+	default:
+	}
 }
 
 func TestLoginHTTPHandlerLimitsCodeSize(t *testing.T) {