Add accessibility package and isEnabled function

internal/testutils/config_stub.go

@@ -0,0 +1,21 @@
+package testutils
+
+import (
+	"testing"
+
+	"github.com/cli/go-gh/v2/pkg/config"
+)
+
+// StubConfig replaces the config.Read function with a function that returns a config object
+// created from the given config string. It also sets up a cleanup function that restores the
+// original config.Read function.
+func StubConfig(t *testing.T, cfgStr string) {
+	t.Helper()
+	old := config.Read
+	config.Read = func(_ *config.Config) (*config.Config, error) {
+		return config.ReadFromString(cfgStr), nil
+	}
+	t.Cleanup(func() {
+		config.Read = old
+	})
+}

pkg/accessibility/accessibility.go

@@ -0,0 +1,29 @@
+package accessibility
+
+import (
+	"os"
+
+	"github.com/cli/go-gh/v2/pkg/config"
+)
+
+const ACCESSIBILITY_ENV = "ACCESSIBILITY"
+
+// IsEnabled returns true if accessibility features are enabled via the ACCESSIBILITY
+// environment variable or the configuration file.
+func IsEnabled() bool {
+	envVar := os.Getenv(ACCESSIBILITY_ENV)
+	if envVar != "" {
+		return isEnvVarEnabled(envVar)
+	}
+
+	// We are not handling errors because we don't want to fail if the config is not
+	// read. Instead, we assume an empty configuration is equivalent to "disabled".
+	cfg, _ := config.Read(nil)
+	accessibleConfigValue, _ := cfg.Get([]string{"accessible"})
+
+	return accessibleConfigValue == "enabled"
+}
+
+func isEnvVarEnabled(envVar string) bool {
+	return envVar != "" && envVar != "0" && envVar != "false"
+}

pkg/accessibility/accessibility_test.go

@@ -0,0 +1,91 @@
+package accessibility
+
+import (
+	"testing"
+
+	"github.com/cli/go-gh/v2/internal/testutils"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestIsEnabled(t *testing.T) {
+	tests := []struct {
+		name        string
+		envVarValue string
+		cfgStr      string
+		wantOut     bool
+	}{
+		{
+			name:        "When the accessibility configuration and env var are both unset, it should return false",
+			envVarValue: "",
+			cfgStr:      "",
+			wantOut:     false,
+		},
+		{
+			name:        "When the accessibility configuration is unset but the ACCESSIBLE env var is set to something truthy (not '0' or 'false'), it should return true",
+			envVarValue: "1",
+			cfgStr:      "",
+			wantOut:     true,
+		},
+		{
+			name:        "When the accessibility configuration is unset and the ACCESSIBLE env var returns '0', it should return false",
+			envVarValue: "0",
+			cfgStr:      "",
+			wantOut:     false,
+		},
+		{
+			name:        "When the accessibility configuration is unset and the ACCESSIBLE env var returns 'false', it should return false",
+			envVarValue: "0",
+			cfgStr:      "",
+			wantOut:     false,
+		},
+		{
+			name:        "When the accessibility configuration is set to enabled and the env var is unset, it should return true",
+			envVarValue: "",
+			cfgStr:      accessibilityEnabledConfig(),
+			wantOut:     true,
+		},
+		{
+			name:        "When the accessibility configuration is set to disabled and the env var is unset, it should return false",
+			envVarValue: "",
+			cfgStr:      accessibilityDisabledConfig(),
+			wantOut:     false,
+		},
+		{
+			name:        "When the accessibility configuration is set to disabled and the env var is set to something truthy (not '0' or 'false'), it should return true",
+			envVarValue: "true",
+			cfgStr:      accessibilityDisabledConfig(),
+			wantOut:     true,
+		},
+		{
+			name:        "When the accessibility configuration is set to enabled and the env var is set to '0', it should return false",
+			envVarValue: "false",
+			cfgStr:      accessibilityEnabledConfig(),
+			wantOut:     false,
+		},
+		{
+			name:        "When the accessibility configuration is set to enabled and the env var is set to 'false', it should return false",
+			envVarValue: "false",
+			cfgStr:      accessibilityEnabledConfig(),
+			wantOut:     false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Setenv("ACCESSIBILITY", tt.envVarValue)
+			testutils.StubConfig(t, tt.cfgStr)
+			assert.Equal(t, tt.wantOut, IsEnabled())
+		})
+	}
+}
+
+func accessibilityEnabledConfig() string {
+	return `
+accessible: enabled
+`
+}
+
+func accessibilityDisabledConfig() string {
+	return `
+accessible: disabled
+`
+}

pkg/api/client_options_test.go

@@ -4,11 +4,12 @@ import (
 	"net/http"
 	"testing"
 
+	"github.com/cli/go-gh/v2/internal/testutils"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestResolveOptions(t *testing.T) {
-	stubConfig(t, testConfigWithSocket())
+	testutils.StubConfig(t, testConfigWithSocket())
 
 	tests := []struct {
 		name          string

pkg/api/graphql_client_test.go

@@ -7,12 +7,13 @@ import (
 	"testing"
 	"time"
 
+	"github.com/cli/go-gh/v2/internal/testutils"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/h2non/gock.v1"
 )
 
 func TestGraphQLClient(t *testing.T) {
-	stubConfig(t, testConfig())
+	testutils.StubConfig(t, testConfig())
 	t.Cleanup(gock.Off)
 
 	gock.New("https://api.github.com").
@@ -34,7 +35,7 @@ func TestGraphQLClient(t *testing.T) {
 }
 
 func TestGraphQLClientDoError(t *testing.T) {
-	stubConfig(t, testConfig())
+	testutils.StubConfig(t, testConfig())
 	t.Cleanup(gock.Off)
 
 	gock.New("https://api.github.com").
@@ -56,7 +57,7 @@ func TestGraphQLClientDoError(t *testing.T) {
 }
 
 func TestGraphQLClientQueryError(t *testing.T) {
-	stubConfig(t, testConfig())
+	testutils.StubConfig(t, testConfig())
 	t.Cleanup(gock.Off)
 
 	gock.New("https://api.github.com").
@@ -78,7 +79,7 @@ func TestGraphQLClientQueryError(t *testing.T) {
 }
 
 func TestGraphQLClientMutateError(t *testing.T) {
-	stubConfig(t, testConfig())
+	testutils.StubConfig(t, testConfig())
 	t.Cleanup(gock.Off)
 
 	gock.New("https://api.github.com").

pkg/api/http_client_test.go

@@ -8,13 +8,13 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/cli/go-gh/v2/pkg/config"
+	"github.com/cli/go-gh/v2/internal/testutils"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/h2non/gock.v1"
 )
 
 func TestHTTPClient(t *testing.T) {
-	stubConfig(t, testConfig())
+	testutils.StubConfig(t, testConfig())
 	t.Cleanup(gock.Off)
 
 	gock.New("https://api.github.com").
@@ -177,17 +177,6 @@ func defaultHeaders() http.Header {
 	return h
 }
 
-func stubConfig(t *testing.T, cfgStr string) {
-	t.Helper()
-	old := config.Read
-	config.Read = func(_ *config.Config) (*config.Config, error) {
-		return config.ReadFromString(cfgStr), nil
-	}
-	t.Cleanup(func() {
-		config.Read = old
-	})
-}
-
 func printPendingMocks(mocks []gock.Mock) string {
 	paths := []string{}
 	for _, mock := range mocks {

pkg/api/rest_client_test.go

@@ -8,12 +8,13 @@ import (
 	"testing"
 	"time"
 
+	"github.com/cli/go-gh/v2/internal/testutils"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/h2non/gock.v1"
 )
 
 func TestRESTClient(t *testing.T) {
-	stubConfig(t, testConfig())
+	testutils.StubConfig(t, testConfig())
 	t.Cleanup(gock.Off)
 
 	gock.New("https://api.github.com").

pkg/repository/repository_test.go

@@ -3,12 +3,12 @@ package repository
 import (
 	"testing"
 
-	"github.com/cli/go-gh/v2/pkg/config"
+	"github.com/cli/go-gh/v2/internal/testutils"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestParse(t *testing.T) {
-	stubConfig(t, "")
+	testutils.StubConfig(t, "")
 
 	tests := []struct {
 		name         string
@@ -106,7 +106,7 @@ hosts:
     oauth_token: yyyyyyyyyyyyyyyyyyyy
     git_protocol: https
 `
-	stubConfig(t, cfgStr)
+	testutils.StubConfig(t, cfgStr)
 	r, err := Parse("OWNER/REPO")
 	assert.NoError(t, err)
 	assert.Equal(t, "enterprise.com", r.Host)
@@ -189,14 +189,3 @@ func TestParseWithHost(t *testing.T) {
 		})
 	}
 }
-
-func stubConfig(t *testing.T, cfgStr string) {
-	t.Helper()
-	old := config.Read
-	config.Read = func(_ *config.Config) (*config.Config, error) {
-		return config.ReadFromString(cfgStr), nil
-	}
-	t.Cleanup(func() {
-		config.Read = old
-	})
-}