[chore] Add test coverage for chloggen/internal/chlog package

chloggen/internal/chlog/context_test.go

@@ -18,24 +18,28 @@ import (
 	"path/filepath"
 	"testing"
 
-	"github.com/stretchr/testify/require"
+	"github.com/stretchr/testify/assert"
 )
 
 func TestNew(t *testing.T) {
 	root := "/tmp"
 	ctx := New(root)
-	require.Equal(t, root, ctx.rootDir)
-	require.Equal(t, filepath.Join(root, unreleasedDir), ctx.UnreleasedDir)
-	require.Equal(t, filepath.Join(root, changelogMD), ctx.ChangelogMD)
-	require.Equal(t, filepath.Join(root, unreleasedDir, templateYAML), ctx.TemplateYAML)
+	assert.Equal(t, root, ctx.rootDir)
+	assert.Equal(t, filepath.Join(root, unreleasedDir), ctx.UnreleasedDir)
+	assert.Equal(t, filepath.Join(root, changelogMD), ctx.ChangelogMD)
+	assert.Equal(t, filepath.Join(root, unreleasedDir, templateYAML), ctx.TemplateYAML)
 }
 
 func TestWithUnreleasedDir(t *testing.T) {
 	root := "/tmp"
 	unreleased := ".test"
 	ctx := New(root, WithUnreleasedDir(unreleased))
-	require.Equal(t, root, ctx.rootDir)
-	require.Equal(t, filepath.Join(root, unreleased), ctx.UnreleasedDir)
-	require.Equal(t, filepath.Join(root, changelogMD), ctx.ChangelogMD)
-	require.Equal(t, filepath.Join(root, unreleased, templateYAML), ctx.TemplateYAML)
+	assert.Equal(t, root, ctx.rootDir)
+	assert.Equal(t, filepath.Join(root, unreleased), ctx.UnreleasedDir)
+	assert.Equal(t, filepath.Join(root, changelogMD), ctx.ChangelogMD)
+	assert.Equal(t, filepath.Join(root, unreleased, templateYAML), ctx.TemplateYAML)
+}
+
+func TestRepoRoot(t *testing.T) {
+	assert.DirExists(t, RepoRoot())
 }

chloggen/internal/chlog/entry_test.go

@@ -0,0 +1,168 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package chlog
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"gopkg.in/yaml.v3"
+)
+
+func TestEntry(t *testing.T) {
+	testCases := []struct {
+		name      string
+		entry     Entry
+		expectErr string
+		toString  string
+	}{
+		{
+			name:      "empty",
+			entry:     Entry{},
+			expectErr: "'' is not a valid 'change_type'. Specify one of [breaking deprecation new_component enhancement bug_fix]",
+		},
+		{
+			name: "missing_component",
+			entry: Entry{
+				ChangeType: "enhancement",
+				Note:       "enhance!",
+				Issues:     []int{123},
+				SubText:    "",
+			},
+			expectErr: "specify a 'component'",
+		},
+		{
+			name: "missing_note",
+			entry: Entry{
+				ChangeType: "bug_fix",
+				Component:  "bar",
+				Issues:     []int{123},
+				SubText:    "",
+			},
+			expectErr: "specify a 'note'",
+		},
+		{
+			name: "missing_issue",
+			entry: Entry{
+				ChangeType: "bug_fix",
+				Component:  "bar",
+				Note:       "fix bar",
+				SubText:    "",
+			},
+			expectErr: "specify one or more issues #'s",
+		},
+		{
+			name: "valid",
+			entry: Entry{
+				ChangeType: "breaking",
+				Component:  "foo",
+				Note:       "broke foo",
+				Issues:     []int{123},
+				SubText:    "",
+			},
+			toString: "- `foo`: broke foo (#123)",
+		},
+		{
+			name: "multiple_issues",
+			entry: Entry{
+				ChangeType: "breaking",
+				Component:  "foo",
+				Note:       "broke foo",
+				Issues:     []int{123, 345},
+				SubText:    "",
+			},
+			toString: "- `foo`: broke foo (#123, #345)",
+		},
+		{
+			name: "subtext",
+			entry: Entry{
+				ChangeType: "breaking",
+				Component:  "foo",
+				Note:       "broke foo",
+				Issues:     []int{123},
+				SubText:    "more details",
+			},
+			toString: "- `foo`: broke foo (#123)\n  more details",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			err := tc.entry.Validate()
+			if tc.expectErr != "" {
+				assert.Equal(t, tc.expectErr, err.Error())
+				return
+			}
+			assert.NoError(t, err)
+			assert.Equal(t, tc.toString, tc.entry.String())
+		})
+	}
+
+}
+
+func TestReadDeleteEntries(t *testing.T) {
+	tempDir := t.TempDir()
+	entriesDir := filepath.Join(tempDir, ".chloggen")
+	require.NoError(t, os.Mkdir(entriesDir, os.ModePerm))
+
+	entryA := Entry{
+		ChangeType: "breaking",
+		Component:  "foo",
+		Note:       "broke foo",
+		Issues:     []int{123},
+	}
+
+	bytesA, err := yaml.Marshal(entryA)
+	require.NoError(t, err)
+
+	fileA, err := os.CreateTemp(entriesDir, "*.yaml")
+	require.NoError(t, err)
+	defer fileA.Close()
+
+	_, err = fileA.Write(bytesA)
+	require.NoError(t, err)
+
+	entryB := Entry{
+		ChangeType: "bug_fix",
+		Component:  "bar",
+		Note:       "fix bar",
+		Issues:     []int{345, 678},
+		SubText:    "more details",
+	}
+
+	bytesB, err := yaml.Marshal(entryB)
+	require.NoError(t, err)
+
+	fileB, err := os.CreateTemp(entriesDir, "*.yaml")
+	require.NoError(t, err)
+	defer fileB.Close()
+
+	_, err = fileB.Write(bytesB)
+	require.NoError(t, err)
+
+	chloggenCtx := New(tempDir)
+	entries, err := ReadEntries(chloggenCtx)
+	assert.NoError(t, err)
+
+	assert.ElementsMatch(t, []*Entry{&entryA, &entryB}, entries)
+
+	assert.NoError(t, DeleteEntries(chloggenCtx))
+	entries, err = ReadEntries(chloggenCtx)
+	assert.NoError(t, err)
+	assert.Empty(t, entries)
+}

chloggen/internal/chlog/summary_test.go

@@ -15,45 +15,87 @@
 package chlog
 
 import (
+	"os"
+	"path/filepath"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
-func Test_SummaryString(t *testing.T) {
-	s := summary{
-		Version:         "1.0",
-		BreakingChanges: []string{"foo", "bar"},
-		Deprecations:    []string{"foo", "bar"},
-		NewComponents:   []string{"foo", "bar", "new component"},
-		Enhancements:    []string{},
-		BugFixes:        []string{"foo", "bar", "foobar"},
-	}
-	result, err := s.String()
-	assert.NoError(t, err)
-	assert.Equal(t, `
-## 1.0
-
-### 🛑 Breaking changes 🛑
-
-foo
-bar
-
-### 🚩 Deprecations 🚩
+func TestSummary(t *testing.T) {
 
-foo
-bar
-
-### 🚀 New components 🚀
+	brk1 := Entry{
+		ChangeType: Breaking,
+		Component:  "foo",
+		Note:       "broke foo",
+		Issues:     []int{123},
+	}
+	brk2 := Entry{
+		ChangeType: Breaking,
+		Component:  "bar",
+		Note:       "broke bar",
+		Issues:     []int{345, 678},
+		SubText:    "more details",
+	}
+	dep1 := Entry{
+		ChangeType: Deprecation,
+		Component:  "foo",
+		Note:       "deprecate foo",
+		Issues:     []int{1234},
+	}
+	dep2 := Entry{
+		ChangeType: Deprecation,
+		Component:  "bar",
+		Note:       "deprecate bar",
+		Issues:     []int{3456, 6789},
+		SubText:    "more details",
+	}
+	enh1 := Entry{
+		ChangeType: Enhancement,
+		Component:  "foo",
+		Note:       "enhance foo",
+		Issues:     []int{12},
+	}
+	enh2 := Entry{
+		ChangeType: Enhancement,
+		Component:  "bar",
+		Note:       "enhance bar",
+		Issues:     []int{34, 67},
+		SubText:    "more details",
+	}
+	bug1 := Entry{
+		ChangeType: BugFix,
+		Component:  "foo",
+		Note:       "bug foo",
+		Issues:     []int{1},
+	}
+	bug2 := Entry{
+		ChangeType: BugFix,
+		Component:  "bar",
+		Note:       "bug bar",
+		Issues:     []int{3, 6},
+		SubText:    "more details",
+	}
+	new1 := Entry{
+		ChangeType: NewComponent,
+		Component:  "foo",
+		Note:       "new foo",
+		Issues:     []int{2},
+	}
+	new2 := Entry{
+		ChangeType: NewComponent,
+		Component:  "bar",
+		Note:       "new bar",
+		Issues:     []int{4, 7},
+		SubText:    "more details",
+	}
 
-foo
-bar
-new component
+	actual, err := GenerateSummary("1.0", []*Entry{&brk1, &brk2, &dep1, &dep2, &enh1, &enh2, &bug1, &bug2, &new1, &new2})
+	assert.NoError(t, err)
 
-### 🧰 Bug fixes 🧰
+	expected, err := os.ReadFile(filepath.Join("testdata", "CHANGELOG.md"))
+	require.NoError(t, err)
 
-foo
-bar
-foobar
-`, result)
+	assert.Equal(t, string(expected), actual)
 }

chloggen/internal/chlog/testdata/CHANGELOG.md

@@ -0,0 +1,32 @@
+
+## 1.0
+
+### 🛑 Breaking changes 🛑
+
+- `foo`: broke foo (#123)
+- `bar`: broke bar (#345, #678)
+  more details
+
+### 🚩 Deprecations 🚩
+
+- `foo`: deprecate foo (#1234)
+- `bar`: deprecate bar (#3456, #6789)
+  more details
+
+### 🚀 New components 🚀
+
+- `foo`: new foo (#2)
+- `bar`: new bar (#4, #7)
+  more details
+
+### 💡 Enhancements 💡
+
+- `foo`: enhance foo (#12)
+- `bar`: enhance bar (#34, #67)
+  more details
+
+### 🧰 Bug fixes 🧰
+
+- `foo`: bug foo (#1)
+- `bar`: bug bar (#3, #6)
+  more details