102 lines
2.4 KiB
Go
102 lines
2.4 KiB
Go
/*
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©AngelaMos | 2026
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writer_test.go
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Tests for requirements.txt in-place update and formatting preservation in writer.go
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Tests:
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TestUpdateFile - two packages updated, comments preserved, untouched package unchanged
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TestUpdateFilePreservesFormatting - original casing kept after case-insensitive name match
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TestUpdateFileNotFound - returns error when package is not in the file
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*/
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package requirements
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import (
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"os"
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"path/filepath"
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"strings"
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"testing"
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)
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func TestUpdateFile(t *testing.T) {
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t.Parallel()
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content := `# Core deps
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django>=3.2.0
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requests==2.28.1 # HTTP client
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flask>=2.0.0
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`
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path := filepath.Join(t.TempDir(), "requirements.txt")
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os.WriteFile(path, []byte(content), 0o600) //nolint:errcheck
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updates := map[string]string{
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"django": ">=6.0.1",
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"requests": ">=2.32.5",
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}
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if err := UpdateFile(path, updates); err != nil {
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t.Fatalf("UpdateFile: %v", err)
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}
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data, _ := os.ReadFile(path) //nolint:errcheck,gosec
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result := string(data)
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if !strings.Contains(result, "django>=6.0.1") {
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t.Error("django not updated")
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}
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if !strings.Contains(result, "requests>=2.32.5") {
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t.Error("requests not updated")
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}
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if !strings.Contains(result, "# Core deps") {
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t.Error("comment lost")
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}
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if !strings.Contains(result, "# HTTP client") {
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t.Error("inline comment lost")
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}
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if !strings.Contains(result, "flask>=2.0.0") {
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t.Error("flask was incorrectly modified")
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}
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}
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func TestUpdateFilePreservesFormatting(t *testing.T) {
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t.Parallel()
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content := "Django>=3.2.0\nnumpy==1.24.0\n"
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path := filepath.Join(t.TempDir(), "requirements.txt")
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os.WriteFile(path, []byte(content), 0o600) //nolint:errcheck
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updates := map[string]string{
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"django": ">=6.0.1",
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}
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if err := UpdateFile(path, updates); err != nil {
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t.Fatalf("UpdateFile: %v", err)
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}
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data, _ := os.ReadFile(path) //nolint:errcheck,gosec
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result := string(data)
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if !strings.Contains(result, "Django>=6.0.1") {
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t.Error("original casing not preserved")
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}
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if !strings.Contains(result, "numpy==1.24.0") {
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t.Error("numpy was incorrectly modified")
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}
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}
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func TestUpdateFileNotFound(t *testing.T) {
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t.Parallel()
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path := filepath.Join(t.TempDir(), "requirements.txt")
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os.WriteFile(path, []byte("flask>=2.0.0\n"), 0o600) //nolint:errcheck
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err := UpdateFile(path, map[string]string{
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"nonexistent": ">=1.0.0",
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})
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if err == nil {
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t.Error("expected error for missing dependency")
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}
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}
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