From d49408267689d9fd57ff6fe556e33a628c4a8527 Mon Sep 17 00:00:00 2001
From: onyx-and-iris <code@onyxandiris.online>
Date: Thu, 1 May 2025 03:49:44 +0100
Subject: [PATCH] add list/create tests + testdata

---
 cmd/gignore/create_test.go        | 60 +++++++++++++++++++++++++++++++
 cmd/gignore/list_test.go          | 43 ++++++++++++++++++++++
 cmd/gignore/testdata/go.gitignore | 26 ++++++++++++++
 3 files changed, 129 insertions(+)
 create mode 100644 cmd/gignore/create_test.go
 create mode 100644 cmd/gignore/list_test.go
 create mode 100644 cmd/gignore/testdata/go.gitignore

diff --git a/cmd/gignore/create_test.go b/cmd/gignore/create_test.go
new file mode 100644
index 0000000..5ba7dd9
--- /dev/null
+++ b/cmd/gignore/create_test.go
@@ -0,0 +1,60 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"os"
+	"testing"
+
+	"github.com/onyx-and-iris/gignore"
+)
+
+// mockFileWriter is a mock implementation of the gignore.FileWriter interface.
+// It writes the content to an io.Writer and adds a header and footer.
+// This is used for testing purposes to avoid writing to the actual file system.
+type mockFileWriter struct {
+	out            io.Writer
+	TargetFileName string
+}
+
+// Write implements the io.Writer interface for the mockFileWriter.
+func (m mockFileWriter) Write(content []byte) (int, error) {
+	const header = "# Auto-generated .gitignore by gignore: github.com/onyx-and-iris/gignore\n"
+	const footer = "\n# End of gignore: github.com/onyx-and-iris/gignore\n"
+
+	m.out.Write([]byte(header))
+	m.out.Write(content)
+	m.out.Write([]byte(footer))
+
+	return len(content) + len(header) + len(footer), nil
+}
+
+func TestCreateSuccess(t *testing.T) {
+	client := gignore.New(
+		gignore.WithTemplateDirectory(gignore.DefaultTemplateDirectory),
+	)
+	ctx := context.WithValue(context.Background(), clientKey, client)
+	var templateBuffer bytes.Buffer
+	client.Writer = mockFileWriter{out: &templateBuffer}
+
+	var outBuffer bytes.Buffer
+	err := createTemplate(ctx, &outBuffer, "go")
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+
+	expectedContent, err := os.ReadFile("testdata/go.gitignore")
+	if err != nil {
+		t.Fatalf("failed to read testdata/go.gitignore: %v", err)
+	}
+
+	if templateBuffer.String() != string(expectedContent) {
+		t.Fatalf("expected template content %q, got %q", string(expectedContent), templateBuffer.String())
+	}
+
+	expectedOutput := "√ created go .gitignore file\n"
+	if outBuffer.String() != expectedOutput {
+		t.Fatalf("expected %q, got %q", expectedOutput, outBuffer.String())
+	}
+}
diff --git a/cmd/gignore/list_test.go b/cmd/gignore/list_test.go
new file mode 100644
index 0000000..ecd630f
--- /dev/null
+++ b/cmd/gignore/list_test.go
@@ -0,0 +1,43 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"testing"
+
+	"github.com/onyx-and-iris/gignore"
+)
+
+func TestListSuccess(t *testing.T) {
+	client := gignore.New(
+		gignore.WithTemplateDirectory(gignore.DefaultTemplateDirectory),
+	)
+	ctx := context.WithValue(context.Background(), clientKey, client)
+
+	testCases := []struct {
+		language string
+		expected string
+	}{
+		{
+			language: "python",
+			expected: "templates/gitignoreio/circuitpython.gitignore\n" +
+				"templates/gitignoreio/python.gitignore\n" +
+				"templates/gitignoreio/pythonvanilla.gitignore\n",
+		},
+	}
+
+	var out bytes.Buffer
+
+	// Call the listTemplates function with the context and output buffer
+	err := listTemplates(ctx, &out, "python")
+	if err != nil {
+		t.Fatalf("listTemplates failed: %v", err)
+	}
+
+	// Check if the output contains the expected templates
+	for _, tc := range testCases {
+		if out.String() != tc.expected {
+			t.Errorf("Expected %q, got %q", tc.expected, out.String())
+		}
+	}
+}
diff --git a/cmd/gignore/testdata/go.gitignore b/cmd/gignore/testdata/go.gitignore
new file mode 100644
index 0000000..07c51ea
--- /dev/null
+++ b/cmd/gignore/testdata/go.gitignore
@@ -0,0 +1,26 @@
+# Auto-generated .gitignore by gignore: github.com/onyx-and-iris/gignore
+
+### Go ###
+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+# End of gignore: github.com/onyx-and-iris/gignore