1 files changed, 134 insertions, 0 deletions

diff --git a/tests/core.zig b/tests/core.zig
new file mode 100644
index 0000000..a6a705e
--- /dev/null
+++ b/tests/core.zig
@@ -0,0 +1,134 @@
+const std = @import("std");
+const clap = @import("../index.zig");
+
+const debug = std.debug;
+const mem = std.mem;
+const core = clap.core;
+
+const assert = debug.assert;
+
+const ArgSliceIterator = core.ArgSliceIterator;
+const Names = core.Names;
+const Param = core.Param;
+const Clap = core.Clap;
+
+fn testNoErr(params: []const Param(u8), args: []const []const u8, ids: []const u8, values: []const ?[]const u8) void {
+    var arg_iter = ArgSliceIterator.init(args);
+    var iter = Clap(u8).init(params, &arg_iter.iter, debug.global_allocator);
+
+    var i: usize = 0;
+    while (iter.next() catch unreachable) |arg| : (i += 1) {
+        debug.assert(ids[i] == arg.id);
+        const expected_value = values[i] ?? {
+            debug.assert(arg.value == null);
+            continue;
+        };
+        const actual_value = arg.value ?? unreachable;
+
+        debug.assert(mem.eql(u8, expected_value, actual_value));
+    }
+}
+
+test "clap.core: short" {
+    const params = []Param(u8) {
+        Param(u8).init(0, false, Names.short('a')),
+        Param(u8).init(1, false, Names.short('b')),
+        Param(u8).init(2, true,  Names.short('c')),
+    };
+
+    testNoErr(params, [][]const u8 { "-a" },          []u8{0},   []?[]const u8{null});
+    testNoErr(params, [][]const u8 { "-a", "-b" },    []u8{0,1}, []?[]const u8{null,null});
+    testNoErr(params, [][]const u8 { "-ab" },         []u8{0,1}, []?[]const u8{null,null});
+    testNoErr(params, [][]const u8 { "-c=100" },      []u8{2},   []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "-c100" },       []u8{2},   []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "-c", "100" },   []u8{2},   []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "-abc", "100" }, []u8{0,1,2}, []?[]const u8{null,null,"100"});
+    testNoErr(params, [][]const u8 { "-abc=100" },    []u8{0,1,2}, []?[]const u8{null,null,"100"});
+    testNoErr(params, [][]const u8 { "-abc100" },     []u8{0,1,2}, []?[]const u8{null,null,"100"});
+}
+
+test "clap.core: long" {
+    const params = []Param(u8) {
+        Param(u8).init(0, false, Names.long("aa")),
+        Param(u8).init(1, false, Names.long("bb")),
+        Param(u8).init(2, true,  Names.long("cc")),
+    };
+
+    testNoErr(params, [][]const u8 { "--aa" },         []u8{0},   []?[]const u8{null});
+    testNoErr(params, [][]const u8 { "--aa", "--bb" }, []u8{0,1}, []?[]const u8{null,null});
+    testNoErr(params, [][]const u8 { "--cc=100" },     []u8{2},   []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "--cc", "100" },  []u8{2},   []?[]const u8{"100"});
+}
+
+test "clap.core: bare" {
+    const params = []Param(u8) {
+        Param(u8).init(0, false, Names.bare("aa")),
+        Param(u8).init(1, false, Names.bare("bb")),
+        Param(u8).init(2, true,  Names.bare("cc")),
+    };
+
+    testNoErr(params, [][]const u8 { "aa" },        []u8{0},   []?[]const u8{null});
+    testNoErr(params, [][]const u8 { "aa", "bb" },  []u8{0,1}, []?[]const u8{null,null});
+    testNoErr(params, [][]const u8 { "cc=100" },    []u8{2},   []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "cc", "100" }, []u8{2},   []?[]const u8{"100"});
+}
+
+test "clap.core: none" {
+    const params = []Param(u8) {
+        Param(u8).init(0, true, Names.none()),
+    };
+
+    testNoErr(params, [][]const u8 { "aa" }, []u8{0}, []?[]const u8{"aa"});
+}
+
+test "clap.core: all" {
+    const params = []Param(u8) {
+        Param(u8).init(
+            0,
+            false,
+            Names{
+                .bare = "aa",
+                .short = 'a',
+                .long = "aa",
+            }
+        ),
+        Param(u8).init(
+            1,
+            false,
+            Names{
+                .bare = "bb",
+                .short = 'b',
+                .long = "bb",
+            }
+        ),
+        Param(u8).init(
+            2,
+            true,
+            Names{
+                .bare = "cc",
+                .short = 'c',
+                .long = "cc",
+            }
+        ),
+        Param(u8).init(3, true, Names.none()),
+    };
+
+    testNoErr(params, [][]const u8 { "-a" },           []u8{0},     []?[]const u8{null});
+    testNoErr(params, [][]const u8 { "-a", "-b" },     []u8{0,1},   []?[]const u8{null,null});
+    testNoErr(params, [][]const u8 { "-ab" },          []u8{0,1},   []?[]const u8{null,null});
+    testNoErr(params, [][]const u8 { "-c=100" },       []u8{2},     []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "-c100" },        []u8{2},     []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "-c", "100" },    []u8{2},     []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "-abc", "100" },  []u8{0,1,2}, []?[]const u8{null,null,"100"});
+    testNoErr(params, [][]const u8 { "-abc=100" },     []u8{0,1,2}, []?[]const u8{null,null,"100"});
+    testNoErr(params, [][]const u8 { "-abc100" },      []u8{0,1,2}, []?[]const u8{null,null,"100"});
+    testNoErr(params, [][]const u8 { "--aa" },         []u8{0},     []?[]const u8{null});
+    testNoErr(params, [][]const u8 { "--aa", "--bb" }, []u8{0,1},   []?[]const u8{null,null});
+    testNoErr(params, [][]const u8 { "--cc=100" },     []u8{2},     []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "--cc", "100" },  []u8{2},     []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "aa" },           []u8{0},     []?[]const u8{null});
+    testNoErr(params, [][]const u8 { "aa", "bb" },     []u8{0,1},   []?[]const u8{null,null});
+    testNoErr(params, [][]const u8 { "cc=100" },       []u8{2},     []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "cc", "100" },    []u8{2},     []?[]const u8{"100"});
+    testNoErr(params, [][]const u8 { "dd" },           []u8{3},     []?[]const u8{"dd"});
+}