test: add test for pypi dependency parse function

packagemanager/pypi_resolver_test.go

@@ -96,3 +96,107 @@ func TestPipGetLatestMatchingVersion(t *testing.T) {
 		})
 	}
 }
+
+func TestPypiParseDependency(t *testing.T) {
+	tests := []struct {
+		name        string
+		input       string
+		wantName    string
+		wantVersion string
+		wantExtra   string
+	}{
+		{
+			name:        "simple package without version",
+			input:       "requests",
+			wantName:    "requests",
+			wantVersion: "",
+			wantExtra:   "",
+		},
+		{
+			name:        "package with exact version",
+			input:       "requests==2.28.1",
+			wantName:    "requests",
+			wantVersion: "==2.28.1",
+			wantExtra:   "",
+		},
+		{
+			name:        "package with greater than version",
+			input:       "django>=4.2.0",
+			wantName:    "django",
+			wantVersion: ">=4.2.0",
+			wantExtra:   "",
+		},
+		{
+			name:        "package with less than version",
+			input:       "pylint<3.0.0",
+			wantName:    "pylint",
+			wantVersion: "<3.0.0",
+			wantExtra:   "",
+		},
+		{
+			name:        "package with not equal version",
+			input:       "pytest!=3.0.0",
+			wantName:    "pytest",
+			wantVersion: "!=3.0.0",
+			wantExtra:   "",
+		},
+		{
+			name:        "package with compatible release version",
+			input:       "sphinx~=4.0.0",
+			wantName:    "sphinx",
+			wantVersion: "~=4.0.0",
+			wantExtra:   "",
+		},
+		{
+			name:        "package with extra",
+			input:       "requests;extra=='security'",
+			wantName:    "requests",
+			wantVersion: "",
+			wantExtra:   "security",
+		},
+		{
+			name:        "package with version and extra",
+			input:       "requests>=2.28.1;extra=='security'",
+			wantName:    "requests",
+			wantVersion: ">=2.28.1",
+			wantExtra:   "security",
+		},
+		{
+			name:        "package with single quotes in extra",
+			input:       "django>=4.2.0;extra=='testing'",
+			wantName:    "django",
+			wantVersion: ">=4.2.0",
+			wantExtra:   "testing",
+		},
+		{
+			name:        "package with double quotes in extra",
+			input:       "django>=4.2.0;extra==\"testing\"",
+			wantName:    "django",
+			wantVersion: ">=4.2.0",
+			wantExtra:   "testing",
+		},
+		{
+			name:        "package with multiple version constraints",
+			input:       "requests>=2.28.1,<3.0.0",
+			wantName:    "requests",
+			wantVersion: ">=2.28.1,<3.0.0",
+			wantExtra:   "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			gotName, gotVersion, gotExtra := pypiParseDependency(tt.input)
+
+			if gotName != tt.wantName {
+				t.Errorf("pypiParseDependency() gotName = %v, want %v", gotName, tt.wantName)
+			}
+			if gotVersion != tt.wantVersion {
+				t.Errorf("pypiParseDependency() gotVersion = %v, want %v", gotVersion, tt.wantVersion)
+			}
+			if gotExtra != tt.wantExtra {
+				t.Errorf("pypiParseDependency() gotExtra = %v, want %v", gotExtra, tt.wantExtra)
+			}
+		})
+	}
+}