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44 lines
1.3 KiB
Go
44 lines
1.3 KiB
Go
package files_test
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import (
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"io/fs"
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"testing"
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"github.com/spf13/afero"
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"github.com/stretchr/testify/require"
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"github.com/coder/coder/v2/coderd/files"
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)
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func TestOverlayFS(t *testing.T) {
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t.Parallel()
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a := afero.NewMemMapFs()
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afero.WriteFile(a, "main.tf", []byte("terraform {}"), 0o644)
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afero.WriteFile(a, ".terraform/modules/example_module/main.tf", []byte("inaccessible"), 0o644)
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afero.WriteFile(a, ".terraform/modules/other_module/main.tf", []byte("inaccessible"), 0o644)
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b := afero.NewMemMapFs()
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afero.WriteFile(b, ".terraform/modules/modules.json", []byte("{}"), 0o644)
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afero.WriteFile(b, ".terraform/modules/example_module/main.tf", []byte("terraform {}"), 0o644)
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it := files.NewOverlayFS(afero.NewIOFS(a), []files.Overlay{{
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Path: ".terraform/modules",
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FS: afero.NewIOFS(b),
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}})
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content, err := fs.ReadFile(it, "main.tf")
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require.NoError(t, err)
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require.Equal(t, "terraform {}", string(content))
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_, err = fs.ReadFile(it, ".terraform/modules/other_module/main.tf")
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require.Error(t, err)
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content, err = fs.ReadFile(it, ".terraform/modules/modules.json")
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require.NoError(t, err)
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require.Equal(t, "{}", string(content))
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content, err = fs.ReadFile(it, ".terraform/modules/example_module/main.tf")
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require.NoError(t, err)
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require.Equal(t, "terraform {}", string(content))
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}
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