Function TestMigrationWriteErrors

internal/config/migrate_test.go:176–220

(t *testing.T)

}

func TestMigrationWriteErrors(t *testing.T) {
	tests := []struct {
		name            string
		unwriteableFile string
		wantErrContains string
	}{
		{
			name:            "failure to write hosts",
			unwriteableFile: "hosts.yml",
			wantErrContains: "failed to write config after migration",
		},
		{
			name:            "failure to write config",
			unwriteableFile: "config.yml",
			wantErrContains: "failed to write config after migration",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			tempDir := t.TempDir()
			t.Setenv("GH_CONFIG_DIR", tempDir)

			// Given we error when writing the files (because we chmod the files as trickery)
			makeFileUnwriteable(t, filepath.Join(tempDir, tt.unwriteableFile))

			c := ghConfig.ReadFromString(testFullConfig())
			topLevelKey := []string{"toplevelkey"}
			hostsKey := []string{hostsKey, "newhost"}

			migration := mockMigration(func(someCfg *ghConfig.Config) error {
				someCfg.Set(topLevelKey, "toplevelvalue")
				someCfg.Set(hostsKey, "newhostvalue")
				return nil
			})

			// When we run the migration
			conf := cfg{c}
			err := conf.Migrate(migration)

			// Then the error is wrapped and bubbled
			require.ErrorContains(t, err, tt.wantErrContains)
		})
	}
}

func makeFileUnwriteable(t *testing.T, file string) {
	t.Helper()